Efficacy of clomipramine in the treatment
of canine compulsive disorder

Hewson CJ, Luescher UA, Parent JM, Conlon PD, Ball RO
Department of Animal and Poultry Science,
Ontario Agricultural College, Guelph, Canada.
J Am Vet Med Assoc 1998 Dec 15; 213(12):1760-6


OBJECTIVE: To assess the efficacy of clomipramine for treatment of canine compulsive disorder (CCD). DESIGN: Randomized, placebo-controlled, double-blind, balanced AB-BA crossover clinical study. ANIMALS: 51 dogs with CCD. PROCEDURES: Dogs were given clomipramine (3 mg/kg [1.3 mg/lb] of body weight, PO, q 12 h) for 4 weeks and placebo for 4 weeks. At the end of each treatment each owner rated the severity of their dog's behavior, using 2 validated rating scales. Statistical analysis was made by ordinal regression. Compliance, adverse effects, and the effectiveness of masking were also assessed. Each dog's behavior was reevaluated 1 to 2 years after completing the study. RESULTS: Behaviors included spinning (n = 17) and self-mutilation by licking (acral lick dermatitis, 12). Both rating scales demonstrated a treatment effect. Compliance was satisfactory, and masking was effective. Sedation and reduced appetite were reported more commonly when dogs were given clomipramine than when they were given placebo. Forty-five dogs available for follow-up evaluation still had their behaviors; 6 dogs were lost to follow-up evaluation. CLINICAL IMPLICATIONS: Results suggest that clomipramine was effective in dogs with CCD and was not associated with serious adverse effects. However, treatment for 4 weeks was not curative. Behavior modification is likely to be necessary to manage CCD.
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