A plant extract used by African warriors and hunters as a poison on their arrows can lead to a prospective male birth control pill a team of scientists including one of Indian-origin reveal. The chemical ouabain found in the African plants Acokanthera schimperia and Strophanthus gratus was used by hunters and warriors to cause a heart attack. The study showed that in laboratory experiments ouabain could make male rats infertile by impeding their sperm's ability to swim. However the effect of the contraceptive is reversible because it works only on mature cells said researchers including Shameem Sultana Syeda from the
