Simvastatin is used to reduce the total amounts of cholesterol, LDL (bad) cholesterol, triglycerides (another type of fat), and apolipoprotein B (a protein needed to make cholesterol) in your blood What should I discuss with my doctor before taking simvastatin, Lowest Zocor Prices Zocor (Simvastatin) is an HMG CoA reductase inhibitor. Simvastatin is in the FDA pregnancy category X - This means that simvastatin is known to cause birth defects if it is taken during pregnancy Simvastatin (Zocor) is also used to increase the level of HDL (good) cholesterol in your blood