When it comes to altered states of consciousness, humans are nothing if not inventive. A number of new synthetic drugs, opiate painkillers and other substances have emerged recently as increasingly popular among partygoers and drug addicts. And some of these substances are alarming health experts and law enforcement officials. Here's a look at five of the most potent of these street drugs. SNIP 2C-P A little-known synthetic hallucinogen with only a brief history of use, 2C-P is reportedly a long-lasting and very potent drug. Its intense psychedelic effects don't begin until a few hours after a person takes it, but...
