“In dogs, 500 mg/kg/day (maximum tested dose) was tolerated for 39 weeks, although minimal body weight loss was observed during the first two weeks of the 39-week dog study.”
“GI effects in the 26-week rat and 39-week dog oral toxicity studies were limited to mild, reversible, fecal alterations in both species and mucosal basophilia/hypertrophy (minimal to slight) in the large intestine in rats.”