Alfalfa is used as a diuretic, and to increase blood clotting and to relieve inflammation of the prostate. It is also used for acute or chronic cystitis and to treat digestive disorders, including constipation and arthritis. Alfalfa seeds are made into a poultice and applied topically to treat boils and insect bites. Alfalfa is primarily used as a nutritive tonic and alkalizing herb. It is used to boost normal vitality and strength, stimulate the appetite, and help in weight gain. Alfalfa is an excellent source of betacarotene, potassium, calcium, and iron.