Zocor 20mg (Simvastatin) is a prescription medication used to lower cholesterol and triglycerides in the blood. Each pack contains 28 tablets manufactured by Organon Pharmaceuticals. This medication belongs to a class of drugs known as statins that work by reducing the amount of cholesterol produced by the liver. This medication requires a prescription and should be taken as directed by your healthcare provider. The tablets should be stored at room temperature away from moisture and heat. Zocor is typically taken once daily in the evening. Common side effects may include digestive issues, muscle pain, and liver enzyme abnormalities. Regular monitoring of cholesterol levels and liver function may be required while taking this medication.