Ajoene, a garlic-derived sulfur-containing compound, exhibited a hepatoprot
ective effect against acetaminophen-induced liver injury in mice. A pretrea
tment with ajoene suppressed the rise in serum glutamic-pyruvic transaminas
e activity and the reduction in the hepatic reduced glutathione level. Thes
e effects of ajoene were observed dose-dependently (20-100 mg/kg). The pret
reatment by ajoene also suppressed the decrease in hepatic protein thiol co
ntent resulting from acetaminophen administration.