Garlic (Allium sativum L.) belongs to Liliaceae family, and is on the best herbal remedies, and is used as a food and a spice Garlic has long been considered an herbal "wonder drug", with a traditional reputation of being able to prevent everything from the common cold and flu. Allium sativum is highly recognized throughout the world for both its medicinal and culinary purpose. Garlic is highly nutritious contains different minerals, vitamins and many other health improving substances used for f human beings. It is rich in sugar, protein, fat, calcium, phosphorous, sulfur, iodine fiber and vitamins. It has been scientifically studied and proven as an efficient remedy for different ailments. These studies raised the possibility of revitalization of therapeutic values of garlic and its compounds in different diseases. Garlic is rich in sulphur-containing compounds, including alliin, produced by enzyme alliinase which are responsible for its medicinal effects. Research conducted on garlic has proved that garlic possesses antibacterial, cardiovascular benefits, cholesterol lowering, anticarcinogenic, immunostimulant and hypoglycemic properties. Different compounds present in garlic have the tendency to reduce the risk of cardiovascular diseases, even possess anti-tumor, anticancer and anti-microbial effects, and ability to control high blood glucose levels. Wide spread research has been carried on the medicinal properties of garlic. Garlic and its different products are effective against health risks and used as dietary supplements mainly used as aged garlic extract and garlic oil and garlic tablets Further studies are required for revealing mechanisms of action of garlic in reducing different ailments as well as its efficiency and safety.