Hallucinogen salvia popular for its intense high

Turns out the hallucinogen -- officially called Salvia divinorum -- is legal in the state of California where Cyrus apparently used it, though it's illegal in 12 other U.S. states. It's also illegal in Canada, although it is openly marketed by some "head shops" in Canada.
Dr. Bryan Roth, a professor of pharmacology at the University of North Carolina explains that the drug is an intense hallucinogenic that's fairly new on the drug scene. He says in the late '90s, recreational drug growers learned how to add the purified active ingredient, salvinorum A, to plants.
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