Drug Derived From Snake Venom Not Effective If Given Late In The Treatment Of Stroke

... Ancrod, a drug derived from snake venom, is not effective in the treatment of ischaemic stroke if given within a 6 hour window after the onset of symptoms, according to the results of a randomised trial published in The Lancet.Ancrod contains a purified fraction of venom from the Malaysian pit viper. It is a promising biological agent that acts on blood's ability to clot. [click link for full article] ...