The excretion of [14C] butylated hydroxytoluene in the rat

Abstract
The excretion of small doses of [14C]labelled butylated hydroxytoluene has been examined in the rat. Parenteral doses are excreted slowly in urine and faeces over 4 days. Biliary excretion is rapid. The biliary radioactivity is absorbed readily from the gut and a rapid enterohepatic cycle has been found to operate over at least 96 hr.