Effexor and dizziness Patient Reports February 10, 2012
Effexor Side Effects Report #4977089-4
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Mar 30, 2005. Female patient, weighting 143.1 lb, was diagnosed with weight decreased and was treated with Effexor. After drug was administered, patient experienced the following side effects: dizziness
, sensation of heaviness. Effexor dosage: 37.5 MG 1X PER 1 TOT, ORAL. Patient recovered.Effexor Side Effects Report #5986129-5
Effexor side effect was reported by a Consumer or non-health professional from AUSTRALIA on Dec 02, 2008. Female patient was diagnosed with traumatic shock and was treated with Effexor. After drug was administered, patient experienced the following side effects: agitation, crying, disturbance in attention, dizziness
, headache
, hyperacusis, memory impairment, nausea
. Effexor dosage: 150 MG. Patient recovered.Effexor Side Effects Report #4643366-X
Effexor side effect was reported by a Consumer or non-health professional from on Apr 14, 2005. Male patient, 44 years of age, weighting 175.2 lb, was diagnosed with suicidal ideation and was treated with Effexor. After drug was administered, patient experienced the following side effects: anxiety
, circadian rhythm sleep disorder, cold sweat, constipation
, dizziness
, dyspepsia, rectal haemorrhage. Effexor dosage: ^VARIOUS HIGH DOSES USUALLY 225 MG TO 300 MG A DAY^, ORAL. During the same period patient was treated with ASPIRIN, IBUPROFEN. Patient recovered.Effexor Side Effects Report #5866771-2
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Aug 28, 2008. Female patient, 33 years of age, weighting 175.0 lb, was diagnosed with stress
and was treated with Effexor. After drug was administered, patient experienced the following side effects: abdominal pain upper, confusional state, convulsion, dizziness
, economic problem, feeling abnormal, headache
, hypertension. Effexor dosage: unknown. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #4886605-2
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on May 04, 2005. Female patient, 53 years of age, weighting 171.1 lb, was diagnosed with social phobia and was treated with Effexor. After drug was administered, patient experienced the following side effects: abnormal dreams, abnormal sensation in eye, anxiety
, blood pressure increased, dizziness
, nervousness, somnolence, unevaluable event. Effexor dosage: 37.5 MG 1X PER 1 DAY, ORAL. Patient recovered.Effexor Side Effects Report #4822645-7
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Oct 28, 2005. Male patient, 16 years of age, was diagnosed with social phobia, depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: aggression, amnesia, condition aggravated, depression
, dizziness
, feeling abnormal, headache
, homicidal ideation, imprisonment. Effexor dosage: unknown. During the same period patient was treated with PAXIL. Patient recovered.Effexor Side Effects Report #5874957-6
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Sept 08, 2008. Female patient, 43 years of age, weighting 198.0 lb, was diagnosed with premenstrual syndrome
and was treated with Effexor. After drug was administered, patient experienced the following side effects: balance disorder, disturbance in attention, dizziness
, fear, impaired work ability, memory impairment, paraesthesia, visual impairment, vomiting. Effexor dosage: 75MG 1 A DAY PO. Patient recovered.Effexor Side Effects Report #4971149-X
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Jan 28, 2005. Female patient, 25 years of age, weighting 160.1 lb, was diagnosed with premenstrual syndrome
and was treated with Effexor. After drug was administered, patient experienced the following side effects: amnesia, disorientation, disturbance in attention, dizziness
, impaired driving ability, unevaluable event. Effexor dosage: unknown. Patient recovered.Effexor Side Effects Report #4885641-X
Effexor side effect was reported by a Physician from UNITED STATES on May 20, 2005. Female patient, 37 years of age, weighting 230.2 lb, was diagnosed with postpartum depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: dizziness
, nausea
, somnolence. Effexor dosage: 75 MG 1X PER 1 DAY, ORAL. Patient recovered.Effexor Side Effects Report #5159418-4
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Nov 22, 2006. Female patient, 25 years of age, weighting 165.0 lb, was diagnosed with postpartum depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: abnormal behaviour, crying, dizziness
, feeling cold, hot flush, insomnia, libido decreased, nasopharyngitis, nausea
. Effexor dosage: 150 MG 1 DAILY PO. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #5477695-7
Effexor side effect was reported by a Health Professional from UNITED STATES on Oct 03, 2007. Female patient, weighting 128.0 lb, was diagnosed with postpartum depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: abdominal pain
, abdominal pain upper, anxiety
, condition aggravated, diarrhoea, disturbance in attention, dizziness
, fatigue. Effexor dosage: 150MG, 75 MG, 37.5MG DAILY PO. Patient recovered.Effexor Side Effects Report #4554107-9
Effexor side effect was reported by a Consumer or non-health professional from on Jan 13, 2005. Female patient, 39 years of age, weighting 140.0 lb, was diagnosed with pelvic pain
and was treated with Effexor. After drug was administered, patient experienced the following side effects: anger, chills, dizziness
, feeling abnormal, impaired work ability, paraesthesia. Effexor dosage: 150MG TO 75 DOWN TO 37.5 ORAL. Patient recovered.Effexor Side Effects Report #4574736-6
Effexor side effect was reported by a Physician from on Jan 27, 2005. Female patient, 31 years of age, weighting 132.1 lb, was diagnosed with panic attack and was treated with Effexor. After drug was administered, patient experienced the following side effects: antepartum haemorrhage, crying, dizziness
, feeling abnormal, nausea
, placenta praevia, tinnitus
. Effexor dosage: unknown. During the same period patient was treated with VITAMINS. Patient recovered.Effexor Side Effects Report #5430339-2
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Aug 22, 2007. Female patient, weighting 150.1 lb, was diagnosed with panic attack and was treated with Effexor. After drug was administered, patient experienced the following side effects: burning sensation, dizziness
, musculoskeletal stiffness, nausea
, nerve injury, paraesthesia. Effexor dosage: unknown. Patient recovered.Effexor Side Effects Report #4887179-2
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Apr 06, 2005. Male patient, 64 years of age, weighting 160.1 lb, was diagnosed with pain
, polymyalgia
and was treated with Effexor. After drug was administered, patient experienced the following side effects: asthenia, dizziness
, headache
, influenza like illness, mood altered, nausea
, unevaluable event. Effexor dosage: 37.5 MG 1X PER 1 DAY, ORAL. During the same period patient was treated with LANTUS, AVANDIA, ASPIRIN. Patient recovered.Effexor Side Effects Report #5586010-X
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Nov 01, 2006. Male patient, 41 years of age, weighting 220.2 lb, was diagnosed with obsessive-compulsive disorder
and was treated with Effexor. After drug was administered, patient experienced the following side effects: affect lability, anxiety
, apathy, asthenia, confusional state, disturbance in attention, dizziness
. Effexor dosage: unknown. Patient recovered.Effexor Side Effects Report #4885658-5
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Oct 27, 2004. Female patient, 38 years of age, weighting 118.1 lb, was diagnosed with night sweats and was treated with Effexor. After drug was administered, patient experienced the following side effects: anxiety
, blood potassium decreased, blood pressure increased, blood thyroid stimulating hormone decreased, chest pain
, dizziness
, dry mouth, dyspepsia. Effexor dosage: unknown. During the same period patient was treated with COUMADIN. Patient recovered.Effexor Side Effects Report #5718571-1
Effexor side effect was reported by a Consumer or non-health professional from NETHERLANDS on Apr 15, 2008. Male patient, 44 years of age, weighting 165.3 lb, was diagnosed with neuralgia and was treated with Effexor. After drug was administered, patient experienced the following side effects: aggression, agitation, depersonalisation, dizziness
, fall
, gait disturbance, impulse-control disorder, libido decreased. Effexor dosage: unknown. Patient recovered.Effexor Side Effects Report #4811058-X
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Oct 18, 2005. Female patient, 43 years of age, weighting 118.1 lb, was diagnosed with migraine prophylaxis and was treated with Effexor. After drug was administered, patient experienced the following side effects: alopecia, amnesia, aphagia, confusional state, disturbance in attention, dizziness
, emotional distress, muscle twitching, muscular weakness. Effexor dosage: unknown. During the same period patient was treated with TOPAMAX. Patient recovered.Effexor Side Effects Report #5093953-2
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Aug 29, 2006. Female patient, 30 years of age, weighting 145.0 lb, was diagnosed with migraine prophylaxis and was treated with Effexor. After drug was administered, patient experienced the following side effects: affective disorder, anger, arthralgia, dizziness
, marital problem, nightmare, thinking abnormal. Effexor dosage: 150 MG DAILY PO. Patient recovered.Effexor Side Effects Report #4556854-1
Effexor side effect was reported by a Physician from on Jan 06, 2005. Female patient, 53 years of age, weighting 147.1 lb, was diagnosed with mental disorder and was treated with Effexor. After drug was administered, patient experienced the following side effects: asthenia, blood pressure increased, breast cyst, crying, dizziness
, dysstasia, extrasystoles, fatigue. Effexor dosage: unknown. During the same period patient was treated with SYNTHROID, LIPITOR, ORTHO CYCLEN, LEVAQUIN, AUGMENTIN. Patient was hospitalized and became disabled. Patient recovered.Effexor Side Effects Report #4885628-7
Effexor side effect was reported by a Physician from UNITED STATES on Oct 28, 2004. Female patient, 50 years of age, weighting 145.1 lb, was diagnosed with menopausal symptoms and was treated with Effexor. After drug was administered, patient experienced the following side effects: blood pressure increased, dizziness
. Effexor dosage: unknown. Patient recovered.Effexor Side Effects Report #4589462-7
Effexor side effect was reported by a Consumer or non-health professional from on Feb 04, 2005. Female patient, 47 years of age, weighting 190.2 lb, was diagnosed with menopausal symptoms and was treated with Effexor. After drug was administered, patient experienced the following side effects: asthenia, chills, depression
, diarrhoea, dizziness
, fatigue, gastric disorder. Effexor dosage: unknown. During the same period patient was treated with YASMIN. Patient recovered.Effexor Side Effects Report #5382884-6
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on July 03, 2007. Female patient, 42 years of age, weighting 104.0 lb, was diagnosed with menopausal symptoms, mood swings and was treated with Effexor. After drug was administered, patient experienced the following side effects: crying, dizziness
, marital problem, psychotic disorder
, suicidal ideation, thinking abnormal. Effexor dosage: unknown. Patient recovered.Effexor Side Effects Report #5271384-X
Effexor side effect was reported by a Physician from UNITED STATES on Mar 09, 2007. Female patient, weighting 170.2 lb, was diagnosed with menopausal symptoms, hypertension, arthritis
and was treated with Effexor. After drug was administered, patient experienced the following side effects: abnormal dreams, dizziness
, dry mouth, dysstasia, fall
, headache
, hyperhidrosis, tremor. Effexor dosage: unknown. During the same period patient was treated with DIOVAN, CALCIUM, TYLENOL, SIMVASTATIN. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #5330319-1
Effexor side effect was reported by a Physician from UNITED STATES on May 10, 2007. Female patient, weighting 170.2 lb, was diagnosed with menopausal symptoms, hypertension and was treated with Effexor. After drug was administered, patient experienced the following side effects: abnormal dreams, constipation
, dizziness
, dry mouth, dysstasia, fall
, headache
, hyperhidrosis. Effexor dosage: unknown. During the same period patient was treated with DIOVAN. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #5146774-6
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Nov 07, 2006. Female patient, weighting 118.0 lb, was diagnosed with menopausal symptoms and was treated with Effexor. After drug was administered, patient experienced the following side effects: abasia, dizziness
, paraesthesia. Effexor dosage: 37.5 MG 1/DAY PO. Patient recovered.Effexor Side Effects Report #5284568-1
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Apr 20, 2006. Female patient, 53 years of age, was diagnosed with memory impairment and was treated with Effexor. After drug was administered, patient experienced the following side effects: anxiety
, dizziness
, headache
, hyperhidrosis, nightmare, palpitations, suicide attempt. Effexor dosage: unknown. During the same period patient was treated with SYNTHROID, ALPRAZOLAM. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #4969296-1
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Mar 24, 2006. Female patient, 24 years of age, weighting 110.1 lb, was diagnosed with mania and was treated with Effexor. After drug was administered, patient experienced the following side effects: anger, confusional state, crying, diarrhoea, disturbance in attention, dizziness
, fatigue. Effexor dosage: 225 MG 1X PER 1 DAY, ORAL. During the same period patient was treated with XANAX, DEXTROAMPHETAMINE SULPHATE, CENTRUM. Patient recovered.Effexor Side Effects Report #5071796-3
Effexor side effect was reported by a Physician from UNITED STATES on July 21, 2006. Male patient, 85 years of age, was diagnosed with major depression and was treated with Effexor. After drug was administered, patient experienced the following side effects: cervical vertebral fracture, dizziness
, fall
. Effexor dosage: 150 MG 1X PER 1 DAY, ORAL. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #4681723-6
Effexor side effect was reported by a Physician from on May 20, 2005. Female patient, 72 years of age, was diagnosed with major depression, prophylaxis and was treated with Effexor. After drug was administered, patient experienced the following side effects: contusion, decreased appetite, dizziness
, fatigue, gastrointestinal disorder, marrow hyperplasia, myelodysplastic syndrome, pancytopenia. Effexor dosage: unknown. During the same period patient was treated with ASPIRIN, CLONAZEPAM, VITAMINS, BUPROPION. Patient recovered.Effexor Side Effects Report #4778661-7
Effexor side effect was reported by a Consumer or non-health professional from SWITZERLAND on Sept 16, 2005. Female patient, 57 years of age, was diagnosed with major depression, schizoaffective disorder and was treated with Effexor. After drug was administered, patient experienced the following side effects: balance disorder, blood pressure increased, dizziness
, heart rate increased, hyperhidrosis, insomnia, restlessness, tremor. Effexor dosage: 150 MG 1X PER 1 DAY. During the same period patient was treated with RISPERDAL, AMITRIPTYLINE, REMERON. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #4881942-X
Effexor side effect was reported by a Consumer or non-health professional from SWITZERLAND on Jan 05, 2006. Female patient, 57 years of age, was diagnosed with major depression, schizoaffective disorder and was treated with Effexor. After drug was administered, patient experienced the following side effects: balance disorder, blood pressure increased, dizziness
, heart rate increased, hyperhidrosis, insomnia, restlessness, serotonin syndrome. Effexor dosage: unknown. During the same period patient was treated with RISPERDAL, AMITRIPTYLINE. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #4886200-5
Effexor side effect was reported by a Physician from SWITZERLAND on Jan 05, 2006. Female patient, 57 years of age, was diagnosed with major depression, schizoaffective disorder and was treated with Effexor. After drug was administered, patient experienced the following side effects: balance disorder, blood pressure increased, dizziness
, heart rate increased, hyperhidrosis, insomnia, restlessness. Effexor dosage: 150 MG 1X PER 1 DAY; 75 MG 1X PER 1 DAY. During the same period patient was treated with RISPERDAL, AMITRIPTYLINE. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #4726043-6
Effexor side effect was reported by a Physician from SPAIN on July 15, 2005. Female patient, 54 years of age, was diagnosed with major depression and was treated with Effexor. After drug was administered, patient experienced the following side effects: aggression, disorientation, dizziness
, headache
, neurological symptom, paraesthesia, paranoia, tinnitus
. Effexor dosage: 37.5 MG 1X PER 1 DAY; TAPERED AT 18.75 MG. During the same period patient was treated with ALCOHOL. Patient recovered.Effexor Side Effects Report #5186312-5
Effexor side effect was reported by a Consumer or non-health professional from CANADA on Nov 30, 2006. Male patient, 39 years of age, was diagnosed with major depression and was treated with Effexor. After drug was administered, patient experienced the following side effects: aggression, dizziness
, loss of libido, nausea
, nightmare, paraesthesia, sopor. Effexor dosage: unknown. During the same period patient was treated with VENTOLIN, FLOVENT. Patient recovered.Effexor Side Effects Report #5188120-8
Effexor side effect was reported by a Consumer or non-health professional from CANADA on Nov 30, 2006. Male patient, 39 years of age, was diagnosed with major depression and was treated with Effexor. After drug was administered, patient experienced the following side effects: aggression, dizziness
, loss of libido, nausea
, nightmare, paraesthesia, sopor. Effexor dosage: unknown. During the same period patient was treated with VENTOLIN, FLOVENT. Patient recovered.Effexor Side Effects Report #5280572-8
Effexor side effect was reported by a Physician from UNITED STATES on Aug 15, 2006. Female patient, 32 years of age, was diagnosed with major depression, pain
and was treated with Effexor. After drug was administered, patient experienced the following side effects: dizziness
, nausea
, paraesthesia, tinnitus
. Effexor dosage: ^150 MG TAPERED TO 37.5 MG DAILY^, ORAL. Patient recovered.Effexor Side Effects Report #5252264-2
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Feb 27, 2007. Female patient, 28 years of age, weighting 135.0 lb, was diagnosed with major depression and was treated with Effexor. After drug was administered, patient experienced the following side effects: dizziness
, fatigue, feeling abnormal, mood swings, nausea
. Effexor dosage: unknown. Patient recovered.Effexor Side Effects Report #6123961-1
Effexor side effect was reported by a Pharmacist from UNITED STATES on Mar 18, 2009. Female patient, 26 years of age, weighting 140.0 lb, was diagnosed with major depression and was treated with Effexor. After drug was administered, patient experienced the following side effects: disturbance in attention, dizziness
, hyperhidrosis, hypoaesthesia facial, hypoaesthesia oral, impaired driving ability, paraesthesia, tremor. Effexor dosage: 3 TABLETS -225MG- ONCE DAILY, IN A.M. PO. Patient recovered.Effexor Side Effects Report #5113770-4
Effexor side effect was reported by a Physician from UNITED STATES on Sept 13, 2006. Female patient was diagnosed with major depression and was treated with Effexor. After drug was administered, patient experienced the following side effects: agitation, anxiety
, dizziness
, insomnia, nervous system disorder, paraesthesia, suicidal ideation. Effexor dosage: unknown. Patient recovered.Effexor Side Effects Report #4928863-1
Effexor side effect was reported by a Health Professional from AUSTRALIA on Feb 14, 2006. Male patient was diagnosed with major depression and was treated with Effexor. After drug was administered, patient experienced the following side effects: balance disorder, dizziness
, fall
, tremor. Effexor dosage: 225 MG 1X PER 1 DAY. During the same period patient was treated with NORVASC, COVERSYL, HYTRIN. Patient recovered.Effexor Side Effects Report #5758946-8
Effexor side effect was reported by a Physician from UNITED STATES on May 28, 2008. Female patient, weighting 160.1 lb, was diagnosed with irritable bowel syndrome
and was treated with Effexor. After drug was administered, patient experienced the following side effects: anorexia, asthenia, crying, depression
, diarrhoea, dizziness
, dry mouth, fatigue. Effexor dosage: unknown. Patient recovered.Effexor Side Effects Report #5414892-0
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Aug 03, 2007. Male patient, weighting 200.2 lb, was diagnosed with hyperhidrosis and was treated with Effexor. After drug was administered, patient experienced the following side effects: dizziness
, hypoaesthesia oral, paraesthesia, presyncope. Effexor dosage: unknown. Patient recovered.Effexor Side Effects Report #5447352-1
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Aug 30, 2007. Male patient, weighting 200.2 lb, was diagnosed with hyperhidrosis and was treated with Effexor. After drug was administered, patient experienced the following side effects: dizziness
, hypoaesthesia oral, paraesthesia, presyncope. Effexor dosage: unknown. Patient recovered.Effexor Side Effects Report #5586125-6
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on July 02, 2007. Female patient, 59 years of age, weighting 195.2 lb, was diagnosed with hot flush and was treated with Effexor. After drug was administered, patient experienced the following side effects: dizziness
, hangover, hyperhidrosis, insomnia, nausea
, somnolence. Effexor dosage: 75 MG 1 X PER 1 TOT, ORAL. Patient recovered.Effexor Side Effects Report #5977713-3
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Dec 01, 2008. Female patient, 59 years of age, weighting 132.0 lb, was diagnosed with hot flush, night sweats and was treated with Effexor. After drug was administered, patient experienced the following side effects: asthenia, dizziness
, heart rate irregular, hypertension, malaise, supraventricular tachycardia. Effexor dosage: 150 MG DAILY PO. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #5323881-6
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on May 09, 2007. Female patient, 58 years of age, was diagnosed with hot flush and was treated with Effexor. After drug was administered, patient experienced the following side effects: blood pressure increased, dizziness
, irritability, nausea
, weight increased. Effexor dosage: unknown. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #4744951-7
Effexor side effect was reported by a Physician from UNITED STATES on Aug 03, 2005. Female patient, 56 years of age, weighting 120.1 lb, was diagnosed with hot flush and was treated with Effexor. After drug was administered, patient experienced the following side effects: agitation, anxiety
, dizziness
, headache
, nausea
, treatment noncompliance. Effexor dosage: unknown. During the same period patient was treated with AROMASIN. Patient recovered.Effexor Side Effects Report #5063329-2
Effexor side effect was reported by a Physician from UNITED STATES on July 17, 2006. Female patient, 53 years of age, weighting 140.1 lb, was diagnosed with hot flush, off label use and was treated with Effexor. After drug was administered, patient experienced the following side effects: communication disorder, depression
, dizziness
, fear, libido increased, nervousness, off label use, paranoia. Effexor dosage: 150 MG 1X PER 1 DAY, ORAL. Patient recovered.Effexor Side Effects Report #4885487-2
Effexor side effect was reported by a Physician from UNITED STATES on Mar 11, 2005. Female patient, 53 years of age, weighting 140.1 lb, was diagnosed with hot flush and was treated with Effexor. After drug was administered, patient experienced the following side effects: communication disorder, crying, depression
, dizziness
, fear, paraesthesia, paranoia, social avoidant behaviour. Effexor dosage: 150 MG 1X PER 1 DAY, ORAL. Patient recovered.Effexor Side Effects Report #4886731-8
Effexor side effect was reported by a Physician from UNITED STATES on Nov 08, 2004. Female patient, 51 years of age, weighting 122.1 lb, was diagnosed with hot flush, menopause
and was treated with Effexor. After drug was administered, patient experienced the following side effects: agitation, coordination abnormal, dizziness
, dysphoria, tremor. Effexor dosage: 37.5 MG 1X PER 1 DAY, ORAL. During the same period patient was treated with CALTRATE. Patient recovered.Effexor Side Effects Report #5477021-3
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Oct 02, 2007. Female patient, weighting 164.0 lb, was diagnosed with hot flush, menopausal symptoms, mood swings and was treated with Effexor. After drug was administered, patient experienced the following side effects: anxiety
, dizziness
, headache
, mood swings, myalgia, nausea
, paraesthesia, suicidal ideation. Effexor dosage: unknown. Patient recovered.Effexor Side Effects Report #4704548-1
Effexor side effect was reported by a Physician from on June 20, 2005. Female patient, weighting 120.1 lb, was diagnosed with hot flush and was treated with Effexor. After drug was administered, patient experienced the following side effects: agitation, anxiety
, dizziness
, headache
, nausea
, treatment noncompliance, vision blurred. Effexor dosage: unknown. During the same period patient was treated with AROMASIN. Patient recovered.Effexor Side Effects Report #4885383-0
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Feb 16, 2005. Female patient, 64 years of age, weighting 162.1 lb, was diagnosed with fibromyalgia and was treated with Effexor. After drug was administered, patient experienced the following side effects: crying, dizziness
, unevaluable event. Effexor dosage: 75 MG 3X PER 1 DAY, ORAL. During the same period patient was treated with THYROID, PLAVIX. Patient recovered.Effexor Side Effects Report #4986591-0
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Apr 13, 2006. Female patient, 30 years of age, was diagnosed with fibromyalgia and was treated with Effexor. After drug was administered, patient experienced the following side effects: aggression, crying, dizziness
, paraesthesia. Effexor dosage: 150 MG 1X PER 1 DAY, ORAL. During the same period patient was treated with SYNTHROID. Patient recovered.Effexor Side Effects Report #5406127-X
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Aug 02, 2007. Female patient, weighting 214.0 lb, was diagnosed with fibromyalgia and was treated with Effexor. After drug was administered, patient experienced the following side effects: anger, crying, dizziness
, eye movement disorder, malaise, mood swings, motion sickness
. Effexor dosage: 150 MG DAILY PO. Patient recovered.Effexor Side Effects Report #4887293-1
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Mar 23, 2005. Female patient, weighting 165.1 lb, was diagnosed with fibromyalgia and was treated with Effexor. After drug was administered, patient experienced the following side effects: crying, dizziness
, headache
, paraesthesia. Effexor dosage: 75 MG 1X PER 1 DAY, ORAL. During the same period patient was treated with XANAX, PRILOSEC, MELATONIN. Patient recovered.Effexor Side Effects Report #5048001-7
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on July 10, 2006. Male patient, 51 years of age, weighting 200.0 lb, was diagnosed with divorced and was treated with Effexor. After drug was administered, patient experienced the following side effects: agitation, alcoholism
, anger, crying, depressed mood, disturbance in attention, dizziness
, emotional disorder. Effexor dosage: 75MG ONE PER DAY PO. Patient recovered.Effexor Side Effects Report #4658319-5
Effexor side effect was reported by a Health Professional from on May 03, 2005. Female patient, 85 years of age, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: blood pressure diastolic decreased, confusional state, delirium, dizziness
, fall
, hallucination, visual, orthostatic hypotension, tremor. Effexor dosage: 75-225MG ORAL. During the same period patient was treated with OLANZAPINE, QUETIAPINE FUMARATE, TRIMETHOPRIM. Patient recovered.Effexor Side Effects Report #4659395-6
Effexor side effect was reported by a Consumer or non-health professional from on May 03, 2005. Female patient, 85 years of age, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: confusional state, delirium, dizziness
, fall
, hallucination, visual, orthostatic hypotension, tremor. Effexor dosage: 75-225MG. During the same period patient was treated with OLANZAPINE, QUETIAPINE FUMARATE, TRIMETHOPRIM. Patient recovered.Effexor Side Effects Report #4848098-0
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Nov 28, 2005. Female patient, 76 years of age, weighting 115.1 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: balance disorder, blood pressure systolic increased, dizziness
, inappropriate antidiuretic hormone secretion. Effexor dosage: 37.5 MG 1X PER 1 DAY ORAL. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #5024051-1
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on May 25, 2006. Female patient, 76 years of age, weighting 115.1 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: balance disorder, blood pressure systolic increased, dizziness
, inappropriate antidiuretic hormone secretion. Effexor dosage: 37.5 MG 1X PER 1 DAY, ORAL; SEE IMAGE. During the same period patient was treated with FOSAMAX, LEVSIN, ZYBAN. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #5024065-1
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on May 25, 2006. Female patient, 76 years of age, weighting 115.1 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: balance disorder, blood pressure systolic increased, dizziness
, inappropriate antidiuretic hormone secretion. Effexor dosage: 37.5 MG 1X PER 1 DAY, ORAL; SEE IMAGE. During the same period patient was treated with FOSAMAX, LEVSIN, ZYBAN. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #5586135-9
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Oct 27, 2006. Female patient, 70 years of age, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: blood pressure increased, condition aggravated, dizziness
, feeling abnormal, headache
, nausea
, nervousness. Effexor dosage: unknown. During the same period patient was treated with THYROID, PREMARIN, DIAZEPAM, PREVACID. Patient recovered.Effexor Side Effects Report #5671769-3
Effexor side effect was reported by a Physician from UNITED STATES on Feb 05, 2007. Female patient, 70 years of age, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: agitation, anxiety
, blood pressure increased, chills, confusional state, diarrhoea, dizziness
. Effexor dosage: unknown. Patient recovered.Effexor Side Effects Report #6030644-5
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Jan 06, 2009. Female patient, 67 years of age, weighting 170.0 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: disturbance in attention, dizziness
, headache
. Effexor dosage: 150 MG DAILY. Patient recovered.Effexor Side Effects Report #6088447-1
Effexor side effect was reported by a Health Professional from FRANCE on Feb 18, 2009. Female patient, 64 years of age, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: balance disorder, confusional state, dizziness
, fall
, hypokalaemia, hyponatraemia, malaise. Effexor dosage: unknown. During the same period patient was treated with NISISCO. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #5585827-5
Effexor side effect was reported by a Physician from UNITED STATES on Apr 16, 2007. Female patient, 62 years of age, weighting 205.2 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: condition aggravated, depression
, dizziness
, suicidal ideation. Effexor dosage: unknown. During the same period patient was treated with LIPITOR, WELLBUTRIN. Patient recovered.Effexor Side Effects Report #6025372-6
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Dec 29, 2008. Male patient, 60 years of age, weighting 190.0 lb, was diagnosed with depression
, pain
and was treated with Effexor. After drug was administered, patient experienced the following side effects: anxiety
, cerebrovascular accident, confusional state, dizziness
, headache
, heart rate irregular, hypertension, myocardial infarction. Effexor dosage: 300 MG DAILY. During the same period patient was treated with TRAMADOL. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #4897755-9
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Jan 18, 2006. Female patient, 57 years of age, weighting 128.1 lb, was diagnosed with depression
, convulsion and was treated with Effexor. After drug was administered, patient experienced the following side effects: amnesia, convulsion, disturbance in attention, dizziness
, feeling drunk, nausea
. Effexor dosage: 75 MG 3X PER 1 DAY, ORAL. During the same period patient was treated with LAMICTAL. Patient recovered.Effexor Side Effects Report #4885536-1
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Dec 14, 2004. Female patient, 56 years of age, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: dizziness
, feeling jittery. Effexor dosage: 150 MG 1X PER 1 DAY. Patient recovered.Effexor Side Effects Report #4885632-9
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Aug 08, 2005. Male patient, 56 years of age, weighting 225.2 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: asthenia, dizziness
, hot flush, loss of consciousness, mood swings. Effexor dosage: 37.5 MG 1X PER 1 DAY, ORAL. During the same period patient was treated with LOPRESSOR, METOPROLOL, PLAVIX, ASPIRIN, TRAZODONE. Patient recovered.Effexor Side Effects Report #5944807-8
Effexor side effect was reported by a Physician from BRAZIL on Oct 28, 2008. Female patient, 55 years of age, was diagnosed with depression
, hypertension and was treated with Effexor. After drug was administered, patient experienced the following side effects: balance disorder, condition aggravated, dizziness
, hemiparesis, hypertension, neurological symptom, paraesthesia. Effexor dosage: unknown. During the same period patient was treated with SELOZOK. Patient recovered.Effexor Side Effects Report #4886607-6
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Sept 20, 2005. Male patient, 55 years of age, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: agitation, anger, anxiety
, arthralgia, asthenia, condition aggravated, depression
, dizziness
. Effexor dosage: unknown. During the same period patient was treated with COUMADIN. Patient recovered.Effexor Side Effects Report #5333136-1
Effexor side effect was reported by a Health Professional from UNITED STATES on May 21, 2007. Female patient, 54 years of age, weighting 95.00 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: blood pressure decreased, depressed level of consciousness, dizziness
, feeling hot, heart rate decreased, hyperhidrosis, insomnia, nausea
. Effexor dosage: 37.5 MG AT BEDTIME PO (ONE DOSE). Patient recovered.Effexor Side Effects Report #5097472-9
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Aug 22, 2006. Female patient, 54 years of age, weighting 153.1 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: dizziness
, hyperhidrosis, sensation of heaviness. Effexor dosage: 37.5 MG 1X PER 1 DAY, ORAL. During the same period patient was treated with LIPITOR, GLYBURIDE, METFORMIN, IMDUR, NORVASC, TOPROL, LISINOPRIL, ASPIRIN. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #5108441-4
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Sept 06, 2006. Female patient, 54 years of age, weighting 153.1 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: angina pectoris, anxiety
, dizziness
, hyperhidrosis, muscle twitching, myocardial ischaemia, nervousness, respiratory rate increased, sensation of heaviness. Effexor dosage: 37.5 MG 1X PER 1 DAY, ORAL. During the same period patient was treated with LIPITOR, GLYBURIDE, METFORMIN, IMDUR, NORVASC, TOPROL, LISINOPRIL, ACETYLSALICYLIC ACIDC. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #4830681-X
Effexor side effect was reported by a Consumer or non-health professional from IRELAND on Nov 07, 2005. Female patient, 54 years of age, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: coordination abnormal, dizziness
. Effexor dosage: 75MG, ORAL. During the same period patient was treated with PROTHIADEN, STILNOCT. Patient recovered.Effexor Side Effects Report #5093187-1
Effexor side effect was reported by a Physician from UNITED STATES on Aug 14, 2006. Female patient, 53 years of age, weighting 154.5 lb, was diagnosed with depression
, hot flush, off label use, social phobia and was treated with Effexor. After drug was administered, patient experienced the following side effects: agitation, cerebral disorder, communication disorder, condition aggravated, confusional state, crying, depression
, dizziness
. Effexor dosage: 150 MG 1X PER 1 DAY, ORAL. During the same period patient was treated with PAXIL CR, PAXIL CR, PAXIL CR, PAXIL CR, ALAVERT, CALCIUM. Patient recovered.Effexor Side Effects Report #5816154-6
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on July 17, 2008. Female patient, 53 years of age, weighting 143.0 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: anxiety
, blood pressure increased, dizziness
, lethargy, nervousness, somnolence. Effexor dosage: 75 MG ONE PO QD. During the same period patient was treated with PAXIL, PROZAC, CELEXA, ZOLOFT, WELLBUTRIN, XANAX. Patient recovered.Effexor Side Effects Report #5858440-X
Effexor side effect was reported by a Health Professional from UNITED KINGDOM on Aug 14, 2008. Male patient, 53 years of age, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: dizziness
, dysgraphia, electrocardiogram qt prolonged, fall
, fine motor delay, hypotension. Effexor dosage: unknown. During the same period patient was treated with AMLODIPINE, NEBIVOLOL. Patient was hospitalized and became disabled. Patient recovered.Effexor Side Effects Report #6013644-0
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Oct 26, 2007. Female patient, 53 years of age, weighting 135.1 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: anorexia, dizziness
, headache
, nausea
, paraesthesia, suicidal ideation. Effexor dosage: unknown. During the same period patient was treated with AMBIEN. Patient recovered.Effexor Side Effects Report #6015580-2
Effexor side effect was reported by a Pharmacist from UNITED STATES on Nov 07, 2007. Female patient, 53 years of age, weighting 112.1 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: dizziness
, eye movement disorder, hot flush, hyperhidrosis, nausea
. Effexor dosage: 75 MG 1X PER 1 DAY, ORAL. During the same period patient was treated with PREVACID, SUDAFED, CYCLOBENZAPRINE. Patient recovered.Effexor Side Effects Report #6093693-7
Effexor side effect was reported by a Health Professional from UNITED STATES on Feb 23, 2009. Female patient, 53 years of age, weighting 180.0 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: dizziness
, dysstasia, fear, headache
, hypoaesthesia oral, impaired work ability, irritability, nausea
. Effexor dosage: 150MG 1 CAPSULE EVERY DA PO. During the same period patient was treated with AMBIEN CR, AMPHETIMINE WITH SALT COMB. Patient recovered.Effexor Side Effects Report #4627320-X
Effexor side effect was reported by a Physician from on Mar 22, 2005. Female patient, 53 years of age, weighting 147.1 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: arthropod bite, arthropod-borne disease, blood pressure increased, blood pressure orthostatic abnormal, breast cyst, crying, dizziness
, extrasystoles. Effexor dosage: unknown. During the same period patient was treated with SYNTHROID, LIPITOR, ORTHO CYCLEN, LEVAQUIN, AUGMENTIN. Patient was hospitalized and became disabled. Patient recovered.Effexor Side Effects Report #4991492-8
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on May 02, 2006. Female patient, 53 years of age, weighting 135.0 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: anorexia, dizziness
, impaired work ability, nausea
, tinnitus
, uterine haemorrhage. Effexor dosage: FROM 150MG TO 25MG. Patient recovered.Effexor Side Effects Report #5248656-8
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Feb 26, 2007. Female patient, 51 years of age, weighting 270.0 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: dizziness
, mental impairment, nausea
, pain in extremity, restless legs syndrome. Effexor dosage: 150 MG ONCE DAILY PO. Patient recovered.Effexor Side Effects Report #5268386-6
Effexor side effect was reported by a Health Professional from UNITED STATES on Mar 14, 2007. Female patient, 51 years of age, weighting 200.0 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: abnormal dreams, anxiety
, disturbance in attention, dizziness
, dysgeusia, headache
. Effexor dosage: 150 MG X 2 DAY PO. Patient recovered.Effexor Side Effects Report #5604638-5
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Jan 24, 2008. Male patient, 51 years of age, weighting 209.0 lb, was diagnosed with depression
, anxiety
, bipolar disorder
and was treated with Effexor. After drug was administered, patient experienced the following side effects: anxiety
, depression
, diarrhoea, dizziness
, eye pruritus, fatigue, feeling cold, headache
, hypersomnia. Effexor dosage: unknown. During the same period patient was treated with SEROQUEL. Patient was hospitalized and became disabled. Patient recovered.Effexor Side Effects Report #4887255-4
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Dec 02, 2004. Male patient, 51 years of age, weighting 183.0 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: dizziness
, fall
. Effexor dosage: 75 MG 1X PER 1 DAY, ORAL ; 75 MG DAILY IN THE MORNING, 37.5 MG DAILY IN THE EVENING, ORAL. During the same period patient was treated with VISTARIL. Patient recovered.Effexor Side Effects Report #5586826-X
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Apr 23, 2007. Female patient, 50 years of age, weighting 135.1 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: depression
, dizziness
, loss of consciousness, paraesthesia, suicidal ideation. Effexor dosage: 75 MG 2 X PER 1 DAY, ORAL. During the same period patient was treated with NEXIUM. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #6013292-2
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Dec 27, 2007. Female patient, 50 years of age, weighting 135.1 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: depression
, dizziness
, electric shock, loss of consciousness, paraesthesia, suicidal ideation. Effexor dosage: 75 MG 2X PER 1 DAY, ORAL. During the same period patient was treated with NEXIUM. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #6013965-1
Effexor side effect was reported by a Physician from UNITED STATES on May 06, 2008. Female patient, 50 years of age, weighting 170.2 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: convulsion, diarrhoea, dizziness
, nausea
, paraesthesia. Effexor dosage: 150 MG 1X PER 1 DAY, ORAL : 300 MG 1X PER 1 DAY, ORAL. During the same period patient was treated with TRAZODONE, DIOVAN, ACTOS, TOPAMAX. Patient recovered.Effexor Side Effects Report #4747097-7
Effexor side effect was reported by a Physician from UNITED STATES on Aug 08, 2005. Female patient, 50 years of age, weighting 136.1 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: affect lability, agitation, anxiety
, arthralgia, dizziness
, eye haemorrhage, fatigue. Effexor dosage: 225 MG 1X PER 1 DAY, ORAL SEE IMAGE. Patient recovered.Effexor Side Effects Report #4885442-2
Effexor side effect was reported by a Health Professional from UNITED STATES on Dec 14, 2004. Female patient, 50 years of age, weighting 185.2 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: decreased appetite, dizziness
, headache
, hypoglycaemia, nausea
. Effexor dosage: ^ TAPERED UP TO 300 MGM OVER 1 MONTH ^ , ORAL; SEE IMAGE. During the same period patient was treated with CYMBALTA, INSULIN. Patient recovered.Effexor Side Effects Report #5807607-5
Effexor side effect was reported by a Consumer or non-health professional from NETHERLANDS on June 30, 2008. Female patient, 49 years of age, weighting 187.4 lb, was diagnosed with depression
, insomnia and was treated with Effexor. After drug was administered, patient experienced the following side effects: apathy, blood pressure diastolic decreased, colitis, condition aggravated, constipation
, depression
, dizziness
, dry eye. Effexor dosage: unknown. During the same period patient was treated with MIRTAZAPINE. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #5809033-1
Effexor side effect was reported by a Consumer or non-health professional from NETHERLANDS on June 30, 2008. Female patient, 49 years of age, weighting 187.4 lb, was diagnosed with depression
, insomnia and was treated with Effexor. After drug was administered, patient experienced the following side effects: apathy, blood pressure diastolic decreased, colitis, condition aggravated, constipation
, depression
, dizziness
, dry eye. Effexor dosage: unknown. During the same period patient was treated with MIRTAZAPINE. Patient was hospitalized. Patient recovered.Effexor Side Effects Report #4887277-3
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Jan 28, 2005. Female patient, 49 years of age, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: dizziness
, mood swings. Effexor dosage: 300 MG 1X PER 1 DAY, ORAL; SEE IMAGE. During the same period patient was treated with SEROQUEL, ENALAPRIL MALEATE. Patient recovered.Effexor Side Effects Report #5586002-0
Effexor side effect was reported by a Consumer or non-health professional from UNITED STATES on Jan 10, 2007. Male patient, 48 years of age, weighting 215.2 lb, was diagnosed with depression
and was treated with Effexor. After drug was administered, patient experienced the following side effects: condition aggravated, dehydration, dizziness
, dry mouth, erectile dysfunction
, fatigue, hyperhidrosis, hypertension. Effexor dosage: 150 MG 2X PER 1 DAY, ORAL ; 150 MG 1X PER 1 DAY, ORAL. During the same period patient was treated with ACCUPRIL. Patient recovered.
Effexor and dizziness 