Simvastatin tablets are used to lower cholesterol. Simvastatin reduces the activity of the enzyme in the liver that makes cholesterol. This prevents circulatory problems. Simvastatin is most effective when it is combined with exercise and a low-cholesterol diet. The tablets can be swallowed whole, and they come in different strengths. To start you will be given a smaller tablet, typically 20 mg. Simvastatin comes in strengths of 10, 20, 20mg 40mg and 80mg. High cholesterol can cause serious circulatory problems such as stroke and heart attack. Because there aren't any obvious symptoms, it is important to keep track of your cholesterol levels. Your cholesterol levels can be affected by lifestyle factors such as smoking, alcohol intake, and inactivity. Diabetes and other medical conditions can lead to high cholesterol. High cholesterol can be caused by family history. Cholesterol is essential in the bloodstream at lower levels. It transports fats throughout your body and promotes healthy tissue growth. This is also known as "good" cholesterol, or high-density lipoprotein. This amount is naturally produced in the liver. Excessive cholesterol can cause blood to stop flowing due to poor diet or other lifestyle factors. This is known as "bad" cholesterol or low-density lipoprotein. Simvastatin reduces the activity of the enzyme in the liver that makes cholesterol. This reduces cholesterol levels, which can lower your risk of angina, stroke, heart attack, and stroke.