Common Name : Neem Other Name : Nimba, Margosa Tree. Botanical Name : Azadirachta Indica A. Juss. Plant Family : Meliaceae Synonyms : Melia Azadirachta Linn. Part Used : Dried Leaf Powder. Overview : Neem, A Fascinating Tree, Is One Of The Most Promising Of All Plants And May Eventually Benefit Every Person In The Planet. Neem leaves mainly yield quercetin (flavonoid) and nimbosterol (�²- sitosterol) as well as number of liminoids (nimbin and its derivatives). Quercetin (a polyphenolic flavonoid), Limonoids like nimocinolide and isonimocinolide are also present. The principal constituents of neem leaves include protein (7.1%), carbohydrates (22.9%), minerals, calcium, phosphorus, vitamin C, carotene etc. But they also contain glutamic acid, tyrosine, aspartic acid, alanine, praline, glutamine and cystine like amino acids, and several fatty acids (dodecanoic, tetradecanoic, elcosanic, etc.).