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Clomipramine hydrochloride capsules, USP is indicated for the treatment of obsessions and compulsions in patients with Obsessive-Compulsive Disorder (OCD). The obsessions or compulsions must cause marked distress, be time-consuming, or significantly interfere with social or occupational functioning, in order to meet the DSM-III-R (circa 1989) diagnosis of OCD. Obsessions are recurrent, persistent ideas, thoughts, images, or impulses that are ego­-dystonic. Compulsions are repetitive, purposeful, and intentional behaviors performed in response to an obsession or in a stereotyped fashion, and are recognized by the person as excessive or unreasonable. The effectiveness of clomipramine hydrochloride capsules, USP for the treatment of OCD was demonstrated in multicenter, placebo-controlled, parallel-group studies, including two 10-week studies in adults and one 8-week study in children and adolescents 10 to 17 years of age. Patients in all studies had moderate-to-severe OCD (DSM-III), with mean baseline ratings on the Yale-Brown Obsessive Compulsive Scale (YBOCS) ranging from 26 to 28 and a mean baseline rating of 10 on the NIMH Clinical Global Obsessive Compulsive Scale (NIMH-OC). Patients taking CMI experienced a mean reduction of approximately 10 on the YBOCS, representing an average improvement on this scale of 35% to 42% among adults and 37% among children and adolescents. CMI-treated patients experienced a 3.5 unit decrement on the NIMH-OC. Patients on placebo showed no important clinical response on either scale. The maximum dose was 250 mg/day for most adults and 3 mg/kg/day (up to 200 mg) for all children and adolescents. The effectiveness of clomipramine hydrochloride capsules, USP for long-term use (i.e., for more than 10 weeks) has not been systematically evaluated in placebo-controlled trials. The physician who elects to use clomipramine hydrochloride capsules, USP for extended periods should periodically reevaluate the long-term usefulness of the drug for the individual patient ( see ).

The treatment regimens described below are based on those used in controlled clinical trials of clomipramine hydrochloride capsules, USP in 520 adults, and 91 children and adolescents with OCD. During initial titration, clomipramine hydrochloride capsules, USP should be given in divided doses with meals to reduce gastrointestinal side effects. The goal of this initial titration phase is to minimize side effects by permitting tolerance to side effects to develop or allowing the patient time to adapt if tolerance does not develop. Because both CMI and its active metabolite, DMI, have long elimination half-lives, the prescriber should take into consideration the fact that steady-state plasma levels may not be achieved until 2 to 3 weeks after dosage change ( see CLINICAL PHARMACOLOGY ). Therefore, after initial titration, it may be appropriate to wait 2 to 3 weeks between further dosage adjustments. Initial Treatment/Dose Adjustment (Adults) Treatment with clomipramine hydrochloride capsules, USP should be initiated at a dosage of 25 mg daily and gradually increased, as tolerated, to approximately 100 mg during the first 2 weeks. During initial titration, clomipramine hydrochloride capsules, USP should be given in divided doses with meals to reduce gastrointestinal side effects. Thereafter, the dosage may be increased gradually over the next several weeks, up to a maximum of 250 mg daily. After titration, the total daily dose may be given once daily at bedtime to minimize daytime sedation. Initial Treatment/Dose Adjustment (Children and Adolescents) As with adults, the starting dose is 25 mg daily and should be gradually increased (also given in divided doses with meals to reduce gastrointestinal side effects) during the first 2 weeks, as tolerated, up to a daily maximum of 3 mg/kg or 100 mg, whichever is smaller. Thereafter, the dosage may be increased gradually over the next several weeks up to a daily maximum of 3 mg/kg or 200 mg, whichever is smaller ( see PRECAUTIONS, Pediatric Use ). As with adults, after titration, the total daily dose may be given once daily at bedtime to minimize daytime sedation. Maintenance/Continuation Treatment (Adults, Children, and Adolescents) While there are no systematic studies that answer the question of how long to continue clomipramine hydrochloride capsules, USP OCD is a chronic condition and it is reasonable to consider continuation for a responding patient....

Commonly Observed The most commonly observed adverse events associated with the use of clomipramine hydrochloride capsules, USP and not seen at an equivalent incidence among placebo-treated patients were gastrointestinal complaints, including dry mouth, constipation, nausea, dyspepsia, and anorexia; nervous system complaints, including somnolence, tremor, dizziness, nervousness, and myoclonus; genitourinary complaints, including changed libido, ejaculatory failure, impotence, and micturition disorder; and other miscellaneous complaints, including fatigue, sweating, increased appetite, weight gain, and visual changes. Leading to Discontinuation of Treatment Approximately 20% of 3616 patients who received clomipramine hydrochloride capsules, USP in U.S. premarketing clinical trials discontinued treatment because of an adverse event. Approximately one-half of the patients who discontinued (9% of the total) had multiple complaints, none of which could be classified as primary. Where a primary reason for discontinuation could be identified, most patients discontinued because of nervous system complaints (5.4%), primarily somnolence. The second-most-frequent reason for discontinuation was digestive system complaints (1.3%), primarily vomiting and nausea. There was no apparent relationship between the adverse events and elevated plasma drug concentrations. Incidence in Controlled Clinical Trials The following table enumerates adverse events that occurred at an incidence of 1% or greater among patients with OCD who received clomipramine hydrochloride capsules, USP in adult or pediatric placebo-controlled clinical trials. The frequencies were obtained from pooled data of clinical trials involving either adults receiving clomipramine hydrochloride capsules, USP (N=322) or placebo (N=319) or children treated with clomipramine hydrochloride capsules, USP (N=46) or placebo (N=44). 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, in which patient characteristics and other factors differ from those that prevailed in the clinical trials. Similarly, the cited frequencies cannot be compared with figures obtained from other clinical investigations involving different treatments, uses, and investigators....

Clomipramine hydrochloride capsules, USP are contraindicated in patients with a history of hypersensitivity to clomipramine hydrochloride capsules, USP or other tricyclic antidepressants. Monoamine Oxidase Inhibitors (MAOIs) The use of MAOIs intended to treat psychiatric disorders with clomipramine hydrochloride capsules, USP or within 14 days of stopping treatment with clomipramine hydrochloride capsules, USP are contraindicated because of an increased risk of serotonin syndrome. The use of clomipramine hydrochloride capsules, USP within 14 days of stopping an MAOI intended to treat psychiatric disorders is also contraindicated ( see WARNINGS and ). Starting clomipramine hydrochloride capsules, USP in a patient who is being treated with linezolid or intravenous methylene blue is also contraindicated because of an increased risk of serotonin syndrome ( see WARNINGS and ). Myocardial Infarction Clomipramine hydrochloride capsules, USP are contraindicated during the acute recovery period after a myocardial infarction.