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effexor xr and cause weight gain

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 effexor xr and cause weight gain as to be uninformative, it was replaced with a more informative term. Dyskinesia has also been reported. Venlafaxine has been reported to increase the pain tolerance threshold to electrical sural nerve stimulation and the threshold at which pain increases (pain summation). One case of serotonin syndrome has been reported which is believed to have been precipitated by the effexor xr and cause weight gain of venlafaxine and trazodone. One small study has suggested that venlafaxine may improve attention, concentration, memory, and reaction time performance after single oral doses. Nervous system side effects reported in premarketing Phase 3 trials have included amnesia, confusion, depersonalization, hypesthesia, abnormal thinking, trismus, vertigo, akathisia, apathy, ataxia, circumoral paresthesia, central nervous system (CNS) stimulation, hostility, hyperesthesia, hyperkinesia, hypotonia, incoordination, myoclonus, neuralgia, neuropathy, seizure, abnormal speech, stupor, adjustment disorder, akinesia, alcohol abuse, aphasia, bradykinesia, buccoglossal syndrome, cerebrovascular accident, feeling drunk, loss of consciousness, dementia, dystonia, increased energy, facial paralysis, abnormal gait, Guillain-Barre Syndrome, hyperchlorhydria, hypokinesia, hysteria, impulse control difficulties, increased libido, motion sickness, neuritis, nystagmus, paresis, decreased or increased reflexes, and torticollis. In a flexible-dose study, with doses in the range of 200 to 375 mg/day and mean dose greater than 300 mg/day, the mean change in heart rate was 8.5 beats per minute compared with 1.7 beats per minute for placebo. Other Events Observed During the Premarketing Evaluation of Venlafaxine During its premarketing assessment, effexor xr and cause weight gain doses of Effexor were administered to 2897 patients in Phase 2 and Phase 3 studies. The same study reported an increase in the average pulse rate of 1.1 to 4.5 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 effexor xr and cause weight gain been reported. According to a retrospective review, in the overdose setting (up to 3 g of venlafaxine), tachycardia, hypertension, mydriasis, QTc prolongation, and transient arrhythmia can be expected. Symptoms resolved following discontinuation of therapy. Genitourinary side effexor xr and cause weight gain have frequently included male and female sexual dysfunction such as abnormal ejaculation in up to 16% of male patients, decreased libido (13%), impotence (13%), and organic dysfunction (anorgasmia or abnormal orgasm) in up to 8% of female patients. Genitourinary side effects reported in premarketing Phase 3 trials have included prostatic disorder (prostatitis, enlarged prostate, and prostate irritability), impaired urination, albuminuria, amenorrhea, cystitis, dysuria, hematuria, leukorrhea, menorrhagia, metrorrhagia, nocturia, breast pain, polyuria, urinary incontinence, urinary retention, urinary urgency, vaginal hemorrhage, vaginitis, abortion, anuria, breast discharge, breast engorgement, balanitis, breast enlargement, endometriosis, female lactation, fibrocystic breast, calcium crystalluria, cervicitis, orchitis, ovarian cyst, bladder pain, prolonged erection, gynecomastia (male), hypomenorrhea, mastitis, menopause, oliguria, salpingitis, urolithiasis, uterine hemorrhage, uterine spasm, and vaginal dryness. Although these events occurred during treatment with venlafaxine, causality has not been determined. There have been postmarketing reports of angioedema. Genitourinary One case of unexpected orgasm and subsequent ejaculation with no erection as well as orgasmic episodes with no ejaculation or erection has also been reported. effexor xr and cause weight gain

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effexor xr and cause weight gain

Serotonin Syndrome or Neuroleptic Malignant effexor xr and cause weight gain (NMS)-like Reactions The development of a potentially life-threatening serotonin syndrome or Neuroleptic Malignant Syndrome (NMS)-like reactions have been reported with SNRIs and SSRIs alone, including Effexor treatment, but particularly with concomitant use of serotonergic drugs (including triptans) with drugs which impair metabolism of serotonin (including MAOIs), or with antipsychotics or other dopamine antagonists. Hyponatremia Hyponatremia may occur as a result of treatment with SSRIs and SNRIs, including Effexor. If intolerable symptoms occur following a decrease in the dose or upon discontinuation of treatment, then resuming the previously prescribed dose may be considered. If needed, the dose should be further increased up to 225 mg/day. Dosage for Elderly Patients No dose adjustment is recommended for elderly patients on the basis of age. Lithium The steady-state pharmacokinetics of venlafaxine administered at 150 mg/day were not affected when a single 600 mg effexor xr and cause weight gain dose of lithium was administered to 12 healthy male subjects. In these 5 studies, Effexor was shown to be significantly superior to placebo on at least 2 of the following 3 measures: Hamilton Depression Rating Scale (total score), Hamilton depressed mood item, and Clinical Global Impression-Severity of Illness rating. Reported adverse events were classified using a standard COSTART-based Dictionary terminology. The prescriber should be aware that these figures cannot be used to predict the incidence of side effects in the course of usual medical practice where patient characteristics and other factors differ from those which prevailed in the clinical trials. Age and Gender A pharmacokinetic analysis of 404 venlafaxine-treated patients from two studies involving both b.i.d. Preclinical studies have shown that venlafaxine and its active metabolite, O-desmethylvenlafaxine (ODV), are potent inhibitors of neuronal serotonin and norepinephrine reuptake and weak inhibitors of dopamine reuptake. Nursing Mothers Venlafaxine and ODV have been reported to be excreted in human milk. There were differences in absolute risk of suicidality across the different indications, with the highest incidence in MDD. Discontinuing effexor xr and cause weight gain (venlafaxine hydrochloride) Symptoms associated with discontinuation of Effexor, other SNRIs, and SSRIs, have effexor xr and cause weight gain reported (see PRECAUTIONS). Call the healthcare provider right away to report new or sudden changes in mood, behavior, thoughts, or feelings. Venlafaxine Cmax increased by 26% in EM subjects and 48% in PM subjects. The mean heart rate in Effexor-treated patients was increased relative to baseline by about 4 beats per minute. schedule) (see CLINICAL TRIALS). Families and caregivers of patients should be advised to look for the emergence of such symptoms on effexor xr and cause weight gain day-to-day basis, since changes may be abrupt. 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 effexor xr and cause weight gain gum hemorrhage, hepatitis, ileitis, jaundice, intestinal obstruction, parotitis, periodontitis, proctitis, increased salivation, soft stools, tongue discoloration. Dispense in a well-closed container as defined in the USP. Such complications can arise immediately upon delivery. Certain patients, including more severely depressed patients, may therefore respond more to higher doses, up to a maximum of 375 effexor xr and cause weight gain generally in three divided doses (see PRECAUTIONS, General, Use in Patients with Concomitant Illness). This information is summary only. This Medication Guide has been approved by the U.S. The physician may consider tapering Effexor in the third trimester. Endocrine system—Rare: goiter, hyperthyroidism, hypothyroidism, thyroid nodule, thyroiditis. This list is not complete and there are many other drugs that can interact with Effexor. Similarly, the cited frequencies cannot be compared with figures obtained from other clinical investigations involving different treatments, uses and investigators. Store Effexor at room temperature away from moisture and heat. Short-term studies did not show an increase in the risk of suicidality with antidepressants compared to placebo in adults beyond age 24; there was a reduction in risk with antidepressants compared to placebo in adults aged 65 and older.