Ayahuasca/yagé is a psychoactive brew made from the Banisteriopsis caapi vine.
But while the psychoactive effects are similar, Spice can be anywhere from five to 10 times more potent.
Most bath salts contain one of two psychoactive chemicals: MDPV (also known as 3,4-Methylenedioxypyrovalerone) or mephedrone.
psychoactive psy·cho·ac·tive (sī'kō-āk'tĭv)
Affecting the mind or mental processes. Used of a drug.