It has also been claimed that alfalfa is helpful for diabetes. But while high amounts of a water extract of the leaves led to increased insulin release in animal studies, there is no evidence that alfalfa would be useful for the treatment of diabetes in humans. The leaves also contain flavones, isoflavones, sterols, and coumarin derivatives. The isoflavones are probably responsible for the estrogen-like effects in animals. Although this has not been confirmed with human trials, alfalfa is used popularly to treat menopause symptoms.
Nutrient analysis demonstrates the presence of calcium , potassium , iron , and zinc .
Dried alfalfa leaf is available as a bulk herb and in tablets or capsules. It is also available in liquid extracts. No therapeutic amount of alfalfa has been established for humans. Use of the dried leaves of alfalfa in the amounts listed above is usually safe. There have been isolated reports of persons allergic to alfalfa.