Bardhan J, Riar S S, Sawhney R C, Kain A K, Thomas P, Ilavazhagan G
Defence Institute of Physiology and Allied Sciences, Delhi Cantt.
Indian J Physiol Pharmacol. 1991 Oct;35(4):278-80.
Neem oil, an oil extracted from the seeds of Azadirachta indica has been found to act as a good spermicidal agent. Pre and post coital application of the oil intravaginally prevented pregnancy in rhesus monkey.