Derek Humphry's suicide advice

In a recent blog post, staunch assisted-suicide activist Derek Humphry released detailed instructions on how to procure the lethal drug Veterinary Nembutal (pentobarbital) in "the backstreets of poorer neighbourhoods" of Mexico and Peru. Humphry says that one bottle is lethal, but two should be purchased for good measure. He gives prices and instructions on how to kill oneself "with speed and absolute certainty" using Nembutal. He warns against visiting Mexican border towns because of drug gang violence. Peru, however, "has proved successful for shoppers." Humphry also suggests Thailand - but advises to "watch out for the notorious fake drugs there."