Neem (Azadirachta indica, Lilac) is widely used in Ayurveda because of its effectiveness in dealing with nearly all types of pitta and kapha imbalances. Bitter and very cooling, it is usually combined with other herbs to offset its vata-aggravating qualities. Neem has traditionally been used to purify the blood, cleanse the liver and support the immune system. It is also commonly used to support healthy skin and to maintain healthy blood glucose levels.

Related scientific research references:

1. Venugopalan Santhosh Kumar and Visweswaran Navaratnam.  Asian Pac J Trop Biomed. 2013 Jul; 3(7): 505–514.