<prompt> First step in cholesterol synthesis is inhibited by ?NiacinFenofibrateCholestramineLovastatin  <response>: Ans. is d i.e., Lovastatin Statins Lovastatin competitively inhibit the conversion of HMG-CoA to mevalonate rate limiting step in cholesterol synthesis by inhibiting the enzyme HMG-CoA reductase.Hvpolipidemic drugs HMG-CoA reductase inhibitors statins - Lovastatin, Simvastatin, Pravastatin, Atorvastatin, Rosuvastatin.Bile acid sequestrants Resins - cholestyramine, colestipol.Activate lipoprotein lipase fabric acid derivatives - clofibrate, gemfibrozil, bezafibrate, fenofibrate. 4.Inhibit lipolysis and triglyceride synthesis - Nicotinic acid.Other - Probucol, Gugulipid, Ezetimibe, Avasimibe, Torcetrapib.Ezetimibe inhibits intestinal cholesterole absorption.Avasimibe inhibits enzyme acyl Coenzyme A : cholesterol acyl transferase-1 A CAT-1 which causes esterification of cholesterol.Torcetrapib inhibits cholesterol ester triglyceride transpo protein -4 T HDL cholesterol. 