MK-0767 is a potent hypoglycaemic insulin sensitizer being evaluated by Kyorin with potential as an antidiabetic agent. MK-0767 acts as a dual agonist of the peroxisome proliferator-activated receptors alpha and gamma, induced high-affinity interactions of PPARα and PPARγ with the transcriptional coactivator CBP in vitro. In ob/ob mice, MK-0767 normalized hyperglycemia and hyperinsulinemia with equal or greater potency and efficacy than pioglitazone. Treatment of hamsters with MK-0767 produced substantial reductions in blood cholesterol and triglycerides. In dogs, MK-0767 reduced serum cholesterol levels with a potency more than 10-fold greater than simvastatin. The efficacies of MK-0767 and simvastatin were additive when given together.