Garlic has been used as a medicine to prevent or treat a wide range of diseases and conditions.
The fresh clove or supplements made from the clove are used for medicine.
Garlic is used for many conditions related to the heart and blood system. These conditions include high blood pressure, high cholesterol, coronary heart disease, heart attack, and atherosclerosis.
Some of these uses are supported by science. Garlic actually may be effective in slowing the development of atherosclerosis and seems to be able to modestly reduce blood pressure.