Comparison of cholesterol-lowering regimens.

Drug therapy should be reserved for patients with marked total cholesterol elevation not amenable to dietary measures. While current guidelines suggest that bile acid sequestrants, such as cholestyramine and colestipol, are first-line drugs for the treatment of hypercholesterolemia, recent studies suggest that lovastatin is a safe, more potent alternative. Gemfibrozil reduces the serum triglyceride level and raises the high-density lipoprotein (HDL) cholesterol level, but has only a moderate effect on the serum cholesterol level. Nicotinic acid lowers serum low-density lipoprotein (LDL) cholesterol and triglyceride levels and raises serum HDL levels, but its use is limited because of troublesome side effects, notably a flushing reaction. Probucol lowers both serum LDL and HDL levels and is a second-line agent for the treatment of hypercholesterolemia.