<prompt> Statins act on w hich enzyme:Acyl CoA synthetaseAcyl CoA reductaseHMG CoA SynthetaseHMG CoA reductase  <response>: Ans. is D i.e., HMG CoA reductase Hypolipidemic drugsHMG-CoA reductase inhibitors statins - Lovastatin, Simvastatin, Pravastatin, Atorvastatin, Rosuvastatin.Bile acid sequestrants Resins - cholestyramine, colestipol.Activate lipoprotein lipase fibric acid derivatives - clofibrate, gemfibrozil, bezafibrate, fenofibrate.Inhibit lipolysis and triglyceride synthesis - Nicotinic acid.Other - Ptobucol, Gugulipid.. Ezetimibe, Avasimibe, Torcetrapib.o Ezetimibe inhibits intestinal cholesterole absorption.o Avast mi he inhibits enzyme acyl Coenzyme A: cholesterol acyl transferase-1 ACAT-1 which causes esterification of cholesterol.o Torcetrapib inhibits cholesterol ester triglyceride transport protein -- HDL cholesterol. 