Zocor is a medicine which is used to lower levels of total bad cholesterol ldl cholesterol and fatty substances called triglycerides in the blood in addition zocor raises levels of good cholesterol hdl cholesterol zocor is a member of the class of medicines called statins cholesterol is one of several fatty substances found in the bloodstream your total cholesterol is made up mainly of ldl and hdl cholesterol cholesterol is one of several fatty substances found in the bloodstrea