Cholesterol-reducing drugs are medications that lower the levels of fats (lipids) in the blood, including cholesterol and triglycerides. High levels of these fats in the bloodstream increase the risk of coronary artery disease (atherosclerosis),  heart attack, stroke and other heart-related conditions. Therefore, cholesterol reducers and other antilipemic medications are often prescribed for people with high cholesterol levels (hypercholesterolemia) or other elevated lipid levels (e.g., high triglycerides).

There are five main categories of cholesterol reducers: statins, bile acid resins, nicotinic acid, fibrates and ezetimibe. Most are available only by prescription, while nicotinic acid, a form of vitamin B3 (niacin), is available over-the-counter. However, niacin should only be taken under the care of a physician to monitor any side effects that could arise, such as severe upset stomach (nausea) and flushing.