Azadirachta indica Identity & Plant Part
The botanical entity is Azadirachta indica A.Juss., the neem tree of the Meliaceae, a fast-growing evergreen of the Indian subcontinent whose long compound leaves carry a dozen or more toothed leaflets. The part used is the leaf. The seed kernel, which is the source of neem oil, and the bark are not part of this neem leaf extract.
The look-alike to avoid is Melia azedarach, the bead tree, a relative with similar pinnate foliage and a different chemistry. A specification should therefore quote the Latin binomial and the leaf. Neem leaf holds limonoids such as nimbin and salannin, flavonoids and polysaccharides, named here only as families, and the leaf is strongly bitter.












