<prompt> Nicotinic acid acts by -Nicotinic acid acts by -Inhibiting HMG-CoA synthataseInhibiting HMG CoA reductaseDecreasing absorption of cholesterol  <response>: Ans. is a i.e., Inhibiting lipolysis o Niacin Nicotinic acid inhibits intracellular lipolysis by inhibiting hormone sensitive lipase -- intracellular FFA to liver -- triglyceride synthesis. 