The safety of dirlotapide in dogs.

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Wren JA, King VL, Krautmann MJ, Gossellin J, Kerlin RL, Hickman MA, Schmahai TJ

The safety of dirlotapide in dogs.

J Vet Pharmacol Ther. 2007 Aug;30 Suppl 1:43-54.

PubMed ID
17567514 [ View in PubMed
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Abstract

The safety of dirlotapide in dogs was evaluated in two studies with parallel designs. In an acute tolerance study, 24 beagles (six dogs per treatment) were treated orally once daily for 14 days with placebo or dirlotapide at 2.5, 5.0, or 10.0 mg/kg/day. In a margin-of-safety study, 38 overweight, neutered beagles were treated orally once daily for 3 months with dirlotapide at doses up to 0.5 mg/kg/day (six dogs), 1.5 mg/kg/day (12 dogs) and 2.5 mg/kg/day (six dogs). Control dogs received placebo at 0.3 mL/kg/day (10 dogs) and 0.5 mL/kg/day (four dogs). Results were similar for both studies, and no serious adverse events were observed. Dirlotapide was clinically well-tolerated in dogs at dosages up to 10 mg/kg/day for 14 days and 2.5 mg/kg/day for 3 months. Dirlotapide produced the expected decrease in food intake and body weight (up to 20-40%) without ill effects. Clinical, pathologic, and histopathologic findings were reversible and consistent with suppression of food intake and rapid weight loss produced by elevated dirlotapide dosages. In both studies, sporadic emesis and loose stools were observed in both placebo and dirlotapide-treated dogs. Incidence of emesis generally increased with dose and decreased with treatment time. Elevations in hepatic transaminase activity were seen in dogs treated with more than 1.5 mg/kg dirlotapide daily, but were not associated with clinical signs or microscopic evidence of hepatic degeneration or necrosis.

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