The therapeutic use of the onion is very old and frequently in herbal medicine. Was used for therapeutic purposes by the Egyptians and the Indians, during the Middle Ages and even during the Renaissance. Was for example used to help relieve headaches, against the bites of snakes and spiders, and as anesthetic stomach after booze or poisoning. Like every other vegetable, the onion is characterized by the richness in water, which constitutes more than 90% by weight of the bulb cool, and the corresponding limited content of sugars, fats and proteins, hence the importance of this food from the secondary energetically. Best known is the contribution of all the vegetables (and therefore of the onion) intake of vitamins and minerals necessary to achieve the daily requirement of these nutrients.