Salvia Divinorum is a leafy herb that is usually smoked to produce manic and hallucinogenic effects. When smoked, it has almost immediate effects. The user stops relating to the environment and usually begins to laugh uncontrollably. He or she may stumble around or fall down to the ground. The high is quite brief, peaking in five to ten minutes although the effects may continue to wane for another half hour.one of the problems with this drug is that there is very little conclusive information on its actions, short-range effects and long-range dangers. Any of the usual sources of information on addictiveness and dangers come up short when it comes to salvia.