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effexor mechanism

Families and effexor mechanism of patients being treated with antidepressants for major depressive disorder or other indications, both psychiatric and nonpsychiatric, should be alerted about the need to monitor patients for the emergence of agitation, irritability, unusual changes in behavior, and the other symptoms described above, as well as the emergence of suicidality, and to report such symptoms immediately to health care providers. Effexor is used for: Treating depression. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist. If your doctor tells you to stop taking effexor mechanism you will need to wait for a period of time before beginning to take certain other medicines (eg, MAOIs, nefazodone, thioridazine). Unit of Use 30 Tablets Rx only Wyeth® PACKAGE LABEL – PRINCIPAL DISPLAY PANEL – 75 MG LABEL NDC 0008-0704-07 Effexor® (venlafaxine HCl) Tablets Equivalent to 75 mg venlafaxine SEALED FOR YOUR PROTECTION Note to authorized dispenser: Each time Effexor is dispensed, give the patient the attached Medication Guide. Also, patients taking diuretics or who are otherwise volume depleted may be at greater risk (see PRECAUTIONS, Geriatric Use).

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effexor mechanism

The manufacturer recommends that therapy be discontinued in patients who develop seizures. The impact of venlafaxine on pain summation may indicate a potential analgesic effect for clinical neuropathic pain. Nearly all selective serotonin reuptake inhibitors, mixed serotonin/norepinephrine reuptake inhibitors, and tricyclic antidepressants cause sleep abnormalities to some extent. There have been reports of increases in prothrombin time, partial thromboplastin time, or INR when effexor mechanism was given to patients receiving warfarin therapy. Top Side Effects by Body System Gastrointestinal Gastrointestinal side effects have frequently included effexor mechanism (up to 35%), dry mouth (14% effexor mechanism 18%), constipation (12%), anorexia (12% to 23%), vomiting, diarrhea (5% to 12%), eructation, abdominal pain, and flatulence. Gastrointestinal side effects reported in premarketing Phase 3 trials effexor mechanism included increased appetite, bruxism, colitis, dysphagia, tongue edema, esophagitis, gastritis, gastroenteritis, gastrointestinal ulcer, gingivitis, glossitis, rectal hemorrhage, hemorrhoids, melena, oral moniliasis, stomatitis, mouth ulceration, abdominal distention, biliary pain, cheilitis, cholecystitis, cholelithiasis, esophageal spasms, duodenitis, hematemesis, gastroesophageal reflux disease, gastrointestinal hemorrhage, gum hemorrhage, hepatitis, ileitis, jaundice, intestinal obstruction, liver tenderness, parotitis, periodontitis, proctitis, rectal disorder, salivary gland enlargement, increased salivation, soft stools, and tongue discoloration. Nervous system Nervous system side effects have frequently included dizziness (16%), somnolence (up to 14%), insomnia (11% to 25%), fatigue (11%), nervousness (9%), abnormal dreams, sleep abnormalities, tremor, depression, paresthesia, decreased libido, agitation, hypertonia, anxiety, delirium, and twitching. Although these events occurred during treatment with venlafaxine, causality has not been determined. A case of dose-related increase of intraocular pressure caused by venlafaxine use has been reported. Metabolic Metabolic side effects have included weight loss (3%). Metabolic side effects reported in premarketing Phase 3 trials have included weight gain, increased alkaline phosphatase, dehydration, hypercholesteremia, hyperglycemia, hyperlipemia, hypoglycemia, hypokalemia, effexor mechanism SGOT (AST), increased SGPT (ALT), thirst, bilirubinemia, increased BUN, increased creatinine, diabetes mellitus, glycosuria, gout, abnormal healing, hemochromatosis, hypercalcinuria, hyperkalemia, hyperphosphatemia, hyperuricemia, hypocholesteremia, hyponatremia, hypophosphatemia, hypoproteinemia, and uremia. All reported events are included except those already listed in Table 2 and those events for which a drug cause was remote. In all cases, hair re- growth occurred within 2 effexor mechanism 4 weeks following discontinuation of venlafaxine. Dermatologic side effects have included sweating in effexor mechanism to approximately 14% of treated patients. Although these effexor mechanism occurred during treatment with venlafaxine, causality has not been determined. Impaired coordination and balance have been reported in postmarketing studies. Seizures have been reported in 0.26% of treated patients during premarketing testing. If the COSTART term for an event was so general as to be uninformative, it was effexor mechanism with a more informative term. During its premarketing assessment, multiple doses of Effexor XR were also administered to 1381 patients in Phase 3 GAD studies and 277 patients effexor mechanism Phase 3 Social Anxiety Disorder studies. In the event that therapy is not reintroduced, withdrawal symptoms may last from 5 to 7 days effexor mechanism resolving spontaneously. In one case report, withdrawal- induced full mania developed in a 33- year- old patient following abrupt termination of treatment with venlafaxine effexor mechanism effexor mechanism mg daily for 10 weeks). Hepatic Hepatic side effects have included toxic hepatitis. Experience with the immediate-release venlafaxine showed that effexor mechanism hypertension was dose-related, increasing from 3% to 7% at 100 to 300 mg/day to 13% at effexor mechanism above 300 mg/day. 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. It is important to emphasize that, although the events reported occurred during treatment with venlafaxine, they were not effexor mechanism caused by it. Events are further categorized by body system and listed in order of decreasing 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, effexor mechanism atrioventricular block, bigeminy, bradycardia, bundle branch block, capillary fragility, cardiovascular disorder (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, effexor mechanism multiple myeloma, purpura. Metabolic and nutritional—Frequent: edema, weight gain; Infrequent: alkaline phosphatase increased, dehydration, hypercholesteremia, hyperglycemia, effexor mechanism 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 effexor mechanism 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, buccoglossal 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, effexor mechanism 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, effexor mechanism uveitis. Urogenital system—Frequent: metrorrhagia*, effexor mechanism disorder (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, effexor mechanism 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 effexor mechanism 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 inappropriate effexor mechanism 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. Hyponatremia tends to develop within the first few weeks of treatment (range 3 to 120 days) and typically resolves within 2 weeks (range 48 effexor mechanism to 6 weeks) after therapy has been effexor mechanism with some patients requiring treatment. During its premarketing assessment, multiple doses of Effexor XR were also administered to 1381 patients in Phase 3 GAD studies and 277 patients in Phase 3 Social Anxiety Disorder studies. Symptoms resolved following treatment with IV steroids and antidepressant therapy was safely switched to paroxetine. effexor mechanism symptoms were reported to include brief bursts of dizziness associated with headache, anxiety, irritability, agitation, insomnia, paresthesias, nausea, vomiting, diarrhea, tremor, fatigue, sweating, and effexor mechanism of depression (similar to symptoms reported after withdrawal from selective serotonin reuptake inhibitors). In effexor mechanism 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%), effexor mechanism 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. Although these events occurred during treatment with venlafaxine, causality has not been determined. Although effexor mechanism interstitial pneumonitis secondary to venlafaxine therapy has been reported. Tachycardia and QTc prolongation appear to occur in a dose-dependent manner. In one case report, venlafaxine (75 mg 3 times/day) may have contributed to an elevation in defibrillation threshold in a patient with nonischemic cardiomyopathy and an implantable cardioverter- defibrillator. Clinically relevant increases in serum cholesterol, defined 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 placebo-treated patients. ECG Changes In effexor mechanism analysis of ECGs obtained in 769 effexor mechanism 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. Tachycardia and QTc prolongation appear to occur in a dose-dependent manner. In one case effexor mechanism venlafaxine (75 mg 3 times/day) may have contributed to an elevation in defibrillation threshold in a patient with nonischemic cardiomyopathy and an implantable cardioverter- defibrillator.