Neem (Azadirachta indica, syn. Melia azadirachta L., Antelaea azadirachta (L.) Adelb.) is a tree in the mahogany family Meliaceae. It is one of two species in the genus Azadirachta, and is native to Bangladesh, India and Myanmar, growing in tropical and semi-tropical regions. Other vernacular names include Azad Dirakht (Persian), DogonYaro (Nigerian), Margosa, Neeb (Arabic), Nimtree, Nimba (Sanskrit), Vepu, Vempu, Vepa (Telugu), Bevu in Kannada, Veppam in (Tamil) and Indian-lilac. In East Africa it is also known as Mwarobaini (Kiswahili), what means: the tree of the 40. It is said, that it treats 40 different diseases

The neem tree is noted for its drought resistance. Normally it thrives in areas with sub-arid to sub-humid conditions, with an annual rainfall between 400 and 1200 mm. It can grow in regions with an annual rainfall below 400 mm, but in such cases it depends largely on the ground water levels. Neem can grow in many different types of soil, but it thrives best on well drained deep and sandy soils (pH 6.2-7.0). It is a typical tropical/subtropical tree and exists at annual mean temperatures between 21-32 °C. It can tolerate high to very high temperatures. It does not tolerate temperature below 4 °C (leaf shedding and death may ensue).

In India, the tree is variously known as "Divine Tree", "Heal All", "Nature's Drugstore", "Village Pharmacy" and "Panacea for all diseases". Products made from neem have proven medicinal properties, being anthelmintic, antifungal, antidiabetic, antibacterial, antiviral and anti-infertility. It is considered a major component in Ayurveda (Devanagari: आयुर्वेद ) and is particularly prescribed for skin disease (Puri, 1999). Neem twigs are used for brushing teeth in India, Bangladesh and Pakistan. This practice is perhaps one of the earliest and most effective forms of dental care. All parts of the tree (seeds, leaves, flowers and bark) are used for preparing many different medical preparation. Neem oil is used for preparing cosmetics (soap, shampoo, balms and creams). Neem Oil is useful for skin care such as acne, and keeping skin elasticity. Besides its use in traditional Indian medicine the neem tree is of great importance for its anti-desertification properties and possibly as a good carbon dioxide sink. Practictioners of traditional Indian medicine recommend that patients suffering from Chicken Pox sleep on neem leaves. Neem Gum is used as a bulking agent and for the preparation of special purpose food (those for diabetics).

Vaasanthi Uses this herb in Sna-Natural, Under-I-Natural, Safed-Natural Gel and Dia-Natural