Alfalfa has been used as an herbal medicine for over 1,500 years. Alfalfa is high in protein, calcium, plus other minerals, vitamin A, vitamins in the B group, vitamin C, vitamin D, vitamin E, and vitamin K. Fiber like that found in alfalfa may help reduce blood sugar by slowing the rate at which calories are released from food. Fiber also has positive effects on cholesterol levels and heart health. Besides fiber, alfalfa supplements are a good source of: chlorophyll, beta carotene, calcium, and the vitamins D, E and K. Like most green foods, alfalfa aids in increased energy levels due to its high nutritive value. Possible mild blood thinning effect. Alfalfa is not recommended for people with Lupus.