Abstract
Probucol (1g/day) was administered for 6 months to 10 hypercholesterolemic patients. Total serum cholesterol fell by 13%, LDL cholesterol by 12%, HDL2 cholesterol by 20% and HDL3 cholesterol by 14%. The serum, LDL and HDL free cholesterol levels were significantly reduced during probucol treatment. The ratio of total cholesterol to free cholesterol in serum, VLDL and LDL was significantly increased. Thus, probucol appeared to reduce especially free cholesterol in VLDL and LDL fractions.