Hypercholesterolemia can cause atherosclerosis and increase the risk of certain heart and blood vessel diseases. Therefore, treatment to lower blood cholesterol is one of the primary prevention measures. Zoamco 20mg contains atorvastatin which belongs to a group of medicines called statins that are commonly used for this purpose. The drug works by blocking the action of a certain enzyme needed to make cholesterol, thereby helping to reduce the amount of cholesterol made in the body.