Nutraceuticals is a broad term derived from nutrition and pharmaceutical. Nutraceuticals are used as a part of food for preventing and treating many acute and chronic diseases. Nutraceuticals are divided into three main categories including herbs, nutrients and dietary supplements. The food products which are used as nutraceuticals are dietary fibers, prebiotics, probiotics, polyunsaturated fatty acids, antioxidants, spices and some other types of types of herbs and natural foods. Probiotics are ingested for their positive advantages in the digestive tract or systemic area like in the liver, brain, vagina or blood stream. Antioxidants are essential for treatment of almost all diseases because most chronic diseases occur due to oxidative stress. Flavonoids and phytochemicals have antioxidant properties due to which it act as therapeutic agents for various diseases such as anti-cancerous.Omega-3 polyunsaturated fatty acids are used for lowering the high levels of cholesterol in cardiovascular diseases and many inflammatory diseases.