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effexor toxicity

All reported events are included except those already listed in Table 2 and those events for which a drug cause was remote. Although these events occurred during treatment with venlafaxine, causality has not been determined. Ocular Ocular side effects have included abnormal vision, primarily blurred vision, in approximately 6% of patients. Symptoms can be minimized by slow tapering or switching to a drug with a longer half-life (e.g., fluoxetine). In premarketing trials, treatment with Effexor tablets was associated with a mean final on-therapy increase in total cholesterol of 3 mg/dL. Patients treated with Effexor tablets for at least 3 months in placebo-controlled 12-month extension trials had a mean final on-therapy increase in total cholesterol of 9.1 mg/dL compared with a decrease of 7.1 mg/dL among placebo-treated patients. The frequencies presented, therefore, represent the proportion of the 5356 patients exposed to multiple doses of either formulation of venlafaxine who experienced an event of the type cited on at least one occasion while receiving venlafaxine. effexor toxicity are not sufficient data with the use of venlafaxine extended-release at doses above 300 mg/day to determine the incidence of sustained increases in blood pressure at these high doses. One study has reported average systolic blood pressure increases of 1.7 to 3.4 mm Hg and average diastolic pressure increases of 0.4 to 2.6 mm Hg. In addition, at least one case of photo-induced telangiectasia has been associated with venlafaxine use. Other Other side effects have frequently included asthenia (up to 21%), headache (up to 34%), flu syndrome (6%), and accidental injury (5%). Other side effects reported in premarketing Phase 3 trials have included edema, hyperacusis, otitis media, parosmia, loss of taste, deafness, labyrinthitis, otitis externa, substernal chest pain, chills, fever, neck pain, face edema, intentional injury, malaise, moniliasis, neck rigidity, pelvic pain, photosensitivity reaction, suicide attempt, appendicitis, bacteremia, carcinoma, and cellulitis. The same study reported an increase in the average pulse rate of 1.1 to effexor toxicity beats per minute. Another study (n=7) suggests that venlafaxine may promote adverse cardiovascular and cerebrovascular events by increasing platelet activity in susceptible patients. An increase in heart rate of 4 beats per minute has been reported. According to a retrospective review, in the overdose setting (up to 3 g of venlafaxine), tachycardia, hypertension, mydriasis, QTc effexor toxicity and transient arrhythmia can be effexor toxicity

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effexor toxicity

Some of these drugs (i.e., bupropion, mirtazapine, nefazodone, trazodone, trimipramine) appear effexor toxicity have a modest or minimal effect on REM sleep. Cardiovascular There are reports of sustained hypertension (some requiring immediate treatment). These antidepressants have marked dose-dependent effects on rapid eye movement (REM) sleep, causing reductions in the overall amount of REM sleep over the night and delays the first entry into REM sleep effexor toxicity REM sleep onset latency (ROL)), both in healthy subjects and depressed patients. Although these events occurred during treatment with venlafaxine, causality has not been determined. Ocular Ocular side effects have included abnormal vision, primarily blurred effexor toxicity in approximately 6% of patients. Although these events occurred during treatment with venlafaxine, causality has not been determined. There is a single case report of breast pain associated with venlafaxine therapy. Dermatologic At least 3 cases of venlafaxine- induced alopecia have been reported. Although these events occurred during treatment with venlafaxine, causality has effexor toxicity been determined. One case of anasarca was reported in a patient receiving venlafaxine. The antidepressants that increase serotonin function appear to have the greatest effect on REM sleep. It is important to emphasize that, although the events reported occurred during treatment with venlafaxine, they were not necessarily caused by it. Events are further categorized by body system and listed in order of effexor toxicity frequency using the following definitions: frequent adverse events are defined as those occurring on one or more occasions in at least 1/100 patients; infrequent adverse events are those occurring in 1/100 to 1/1000 patients; rare events are those occurring in fewer than 1/1000 patients. Body as a whole—Frequent: accidental injury, chest pain substernal, neck pain; Infrequent: face edema, intentional injury, malaise, moniliasis, neck rigidity, pelvic pain, photosensitivity reaction, suicide attempt, withdrawal syndrome; Rare: appendicitis, bacteremia, carcinoma, cellulitis. Cardiovascular system—Frequent: migraine; Infrequent: angina pectoris, arrhythmia, extrasystoles, hypotension, peripheral vascular disorder (mainly cold feet and/or cold hands), syncope, thrombophlebitis; Rare: aortic aneurysm, arteritis, first-degree atrioventricular block, bigeminy, bradycardia, bundle branch block, capillary fragility, cardiovascular effexor toxicity (mitral valve and circulatory disturbance), cerebral ischemia, coronary artery disease, congestive heart failure, heart arrest, mucocutaneous hemorrhage, myocardial infarct, pallor. Digestive system—Frequent: eructation; Infrequent: bruxism, colitis, dysphagia, tongue edema, esophagitis, gastritis, gastroenteritis, gastrointestinal ulcer, gingivitis, glossitis, rectal hemorrhage, hemorrhoids, melena, oral moniliasis, stomatitis, mouth ulceration; Rare: cheilitis, cholecystitis, cholelithiasis, duodenitis, esophageal spasm, hematemesis, gastrointestinal hemorrhage, gum hemorrhage, hepatitis, ileitis, jaundice, intestinal obstruction, parotitis, periodontitis, proctitis, increased salivation, soft stools, tongue discoloration. Endocrine system—Rare: goiter, hyperthyroidism, hypothyroidism, thyroid nodule, thyroiditis. Hemic and lymphatic system—Frequent: ecchymosis; Infrequent: anemia, leukocytosis, leukopenia, lymphadenopathy, thrombocythemia, thrombocytopenia; Rare: basophilia, bleeding time increased, cyanosis, eosinophilia, lymphocytosis, multiple myeloma, purpura. Metabolic and nutritional—Frequent: edema, weight gain; Infrequent: alkaline phosphatase increased, dehydration, hypercholesteremia, hyperglycemia, hyperlipemia, hypokalemia, SGOT (AST) increased, SGPT (ALT) increased, thirst; Rare: alcohol intolerance, bilirubinemia, BUN increased, creatinine increased, diabetes mellitus, glycosuria, gout, healing abnormal, hemochromatosis, hypercalcinuria, hyperkalemia, hyperphosphatemia, hyperuricemia, hypocholesteremia, hypoglycemia, hyponatremia, hypophosphatemia, hypoproteinemia, uremia. Musculoskeletal system—Infrequent: arthritis, arthrosis, bone pain, bone spurs, bursitis, leg cramps, myasthenia, tenosynovitis; Rare: pathological fracture, myopathy, osteoporosis, osteosclerosis, plantar fasciitis, rheumatoid arthritis, tendon rupture. Nervous system—Frequent: trismus, vertigo; Infrequent: akathisia, apathy, ataxia, circumoral paresthesia, CNS stimulation, emotional lability, euphoria, hallucinations, hostility, hyperesthesia, hyperkinesia, hypotonia, incoordination, libido increased, manic reaction, myoclonus, neuralgia, neuropathy, psychosis, seizure, abnormal speech, stupor; Rare: akinesia, alcohol abuse, aphasia, bradykinesia, effexor toxicity syndrome, cerebrovascular accident, loss of consciousness, delusions, dementia, dystonia, facial paralysis, feeling drunk, abnormal gait, Guillain-Barre Syndrome, hyperchlorhydria, hypokinesia, impulse control difficulties, neuritis, nystagmus, paranoid reaction, paresis, psychotic depression, reflexes decreased, reflexes increased, suicidal ideation, torticollis. Respiratory system—Frequent: bronchitis, dyspnea; Infrequent: asthma, chest congestion, epistaxis, hyperventilation, laryngismus, laryngitis, pneumonia, voice alteration; Rare: atelectasis, hemoptysis, hypoventilation, hypoxia, larynx edema, pleurisy, pulmonary embolus, sleep apnea. Skin and appendages—Infrequent: acne, alopecia, brittle nails, contact dermatitis, dry skin, eczema, skin hypertrophy, maculopapular rash, psoriasis, urticaria; Rare: erythema nodosum, exfoliative dermatitis, lichenoid dermatitis, hair discoloration, skin discoloration, furunculosis, hirsutism, leukoderma, petechial rash, pustular rash, vesiculobullous rash, seborrhea, skin atrophy, skin striae. Special senses—Frequent: abnormality of accommodation, abnormal vision; Infrequent: cataract, conjunctivitis, corneal lesion, diplopia, dry eyes, eye pain, hyperacusis, otitis media, parosmia, photophobia, taste loss, visual field defect; Rare: blepharitis, chromatopsia, conjunctival edema, deafness, exophthalmos, glaucoma, retinal hemorrhage, subconjunctival hemorrhage, keratitis, labyrinthitis, miosis, papilledema, decreased pupillary reflex, otitis externa, scleritis, uveitis. Urogenital system—Frequent: metrorrhagia*, prostatic effexor toxicity (prostatitis and enlarged prostate)*, vaginitis*; Infrequent: albuminuria, amenorrhea*, cystitis, dysuria, hematuria, leukorrhea*, menorrhagia*, nocturia, bladder pain, breast pain, polyuria, pyuria, urinary incontinence, urinary urgency, vaginal hemorrhage*; Rare: abortion*, anuria, balanitis*, breast discharge, breast engorgement, breast enlargement, endometriosis*, fibrocystic breast, calcium crystalluria, cervicitis*, ovarian cyst*, prolonged erection*, gynecomastia (male)*, hypomenorrhea*, kidney calculus, kidney pain, kidney function abnormal, female lactation*, mastitis, menopause*, oliguria, orchitis*, pyelonephritis, salpingitis*, urolithiasis, uterine hemorrhage*, uterine spasm*, vaginal dryness*. * Based on the number of men and women as appropriate. Postmarketing Reports Voluntary reports of other adverse events temporally associated with the use of venlafaxine that have been received since market introduction and that may have no causal relationship with the use of venlafaxine include the following: agranulocytosis, anaphylaxis, angioedema, aplastic anemia, catatonia, congenital anomalies, impaired coordination and balance, CPK increased, deep vein thrombophlebitis, delirium, EKG abnormalities such as QT prolongation; cardiac arrhythmias including atrial fibrillation, supraventricular tachycardia, ventricular extrasystole, and rare reports of ventricular fibrillation and ventricular tachycardia, including torsade de pointes; toxic epidermal necrolysis/Stevens-Johnson Syndrome, erythema multiforme, extrapyramidal symptoms (including dyskinesia and tardive dyskinesia), angle-closure glaucoma, hemorrhage (including eye and gastrointestinal bleeding), hepatic events (including GGT elevation; abnormalities of unspecified liver function tests; liver damage, necrosis, or failure; and fatty liver), interstitial lung disease, involuntary movements, LDH increased, neutropenia, night sweats, pancreatitis, pancytopenia, panic, prolactin increased, renal failure, rhabdomyolysis, shock-like electrical sensations or tinnitus (in some cases, subsequent to the discontinuation of venlafaxine or tapering of dose), and syndrome of effexor toxicity antidiuretic hormone secretion (usually in the elderly). There have been reports of elevated clozapine levels that were temporally associated with adverse events, including seizures, following the addition of venlafaxine. If the COSTART term for an event was so general as to be uninformative, it was replaced with a more informative term. Some of these drugs (i.e., bupropion, mirtazapine, nefazodone, trazodone, trimipramine) appear to have a modest or minimal effect effexor toxicity REM sleep. Cardiovascular There are reports of sustained hypertension (some requiring immediate treatment). Withdrawal symptoms were reported to include brief bursts of dizziness associated with headache, anxiety, irritability, agitation, insomnia, paresthesias, nausea, vomiting, diarrhea, tremor, fatigue, sweating, and worsening of depression (similar to symptoms reported after withdrawal from selective serotonin reuptake inhibitors). Clinically relevant increases in serum cholesterol, effexor toxicity as 1) a final on-therapy increase in serum cholesterol ≥50 mg/dL from baseline and to a value ≥261 mg/dL or 2) an average on‑therapy increase in serum cholesterol ≥50 mg/dL from baseline and to a value ≥261 mg/dL, were recorded in 5.3% of venlafaxine-treated patients and 0.0% of effexor toxicity patients. ECG Changes In an analysis of ECGs obtained in 769 patients treated with Effexor and 450 patients treated with placebo in controlled clinical trials, the only statistically significant difference observed was for heart rate, ie, a mean increase from baseline of 4 beats per minute for Effexor. The rule for including events was to enumerate those that occurred at an effexor toxicity of 5% or more for at least one of the venlafaxine groups and for which the incidence was at effexor toxicity twice the placebo incidence for at least one Effexor group. Following discontinuation of therapy the amount of REM sleep tends to rebound. The onset of venlafaxine- associated interstitial pneumonitis has ranged from 1 to 18 months after initial exposure to the drug and symptomatic improvement occurred after discontinuation of venlafaxine and treatment with corticosteroids. Top More Effexor resources Effexor Detailed Consumer Information (PDR) Effexor Prescribing Information (FDA) Effexor Consumer Overview Effexor Advanced Consumer (Micromedex) - Includes Dosage Information Effexor MedFacts Consumer Leaflet (Wolters Kluwer) Venlafaxine Prescribing Information (FDA) Effexor XR Prescribing Information (FDA) Effexor XR Extended-Release Capsules MedFacts Consumer Leaflet (Wolters Kluwer). The reported incidence of each of these effects ranges effexor toxicity 10% and 20% of treated patients. This increase was duration dependent over the study period and tended to be greater with higher doses. If the COSTART term for an event was so general as to be uninformative, it was replaced with a more informative term. Although these events occurred during treatment with venlafaxine, causality has not been determined. Musculoskeletal Musculoskeletal side effects have included rhabdomyolysis. Musculoskeletal side effects reported in premarketing Phase 3 trials have included arthralgia, arthritis, arthrosis, bone spurs, bursitis, leg cramps, myasthenia, tenosynovitis, bone pain, pathological fracture, muscle cramp, muscle spasms, musculoskeletal stiffness, myopathy, osteoporosis, osteosclerosis, plantar fasciitis, rheumatoid arthritis, and tendon rupture. Risk factors for the development of SSRI- associated hyponatremia including advanced age, female gender, concomitant use of diuretics, low body weight, and lower baseline serum sodium levels have been identified. Hyponatremia tends to develop within the first few weeks of treatment (range 3 to 120 days) and typically resolves within 2 weeks (range 48 hours to 6 weeks) after therapy has been discontinued with some patients requiring treatment.