RT Journal Article SR Electronic T1 The pharmacokinetics of indecainide in mice, rats, dogs, and monkeys. JF Drug Metabolism and Disposition JO Drug Metab Dispos FD American Society for Pharmacology and Experimental Therapeutics SP 683 OP 690 VO 12 IS 6 A1 T D Lindstrom A1 G W Whitaker YR 1984 UL http://dmd.aspetjournals.org/content/12/6/683.abstract AB The pharmacokinetics of indecainide, a new antiarrhythmic agent, were studied in mice, rats, dogs, and monkeys. The drug was well absorbed in all species tested resulting in peak plasma levels of drug within 2 hr. The plasma half-life of indecainide after acute oral administration was 3-5 hr in rats, dogs, and monkeys but considerably shorter in mice. The plasma half-life of indecainide was dose-dependent in dogs and increased slightly with chronic dosing. Peak plasma levels of drug were also dose-dependent in dogs and monkeys. Fecal elimination was the primary route of excretion of the drug in rats and mice after oral dosing. Fifty per cent of the dose was excreted in the bile of rats which was then subject to enterohepatic circulation. Urinary elimination was the predominant excretory route in the dog. Tissue distribution of radioactivity in rats showed that tissues which first encounter the drug have the highest levels of radioactivity. The highest concentrations were found in the stomach, intestine, liver, and kidney, whereas very low levels were observed in the fat and brain. Except for liver and kidney, only very low levels were present after 24 hr.