73681-12-6

Indecainide hydrochloride (0, 3, 6, or 9 mg/kg; IV, daily for 1 month) causes 6 of 10 male rats and 1 of 10 female rats die at 9 mg/kg during the test period^[2].
Indecainide hydrochloride (0, 1.5, 3, or 4.5 mg/kg; IV, daily for 1 month) causes 2 of 4 dogs die at 4.5 mg/kg; exhibits no overt signs of toxicity and no hematologic, serum chemistry or histologic changes at 1.5 or 3 mg/kg^[2].