Medicinal values of Neem Powder The neem tree (Azadirachta indica) has been recognized as possessing powerful health promoting properties for millennia. In very general terms, neem is known to have an affinity for the reproductive system, the GI tract, the urinary tract, the respiratory system, and the circulatory system. Neem is highly effective in the maintenance of healthy teeth and gums and supports overall oral hygiene, it is revered for the capacity to evoke natural color and vibrant health in both skin and hair, and it also encourages strong digestion and metabolism, healthy blood, and bolsters the immune system.