Kratom - Mitragyna speciosa
Over 25 alkaloids have been isolated from Kratom; the principle one being mitragynine, an indole alkaloid superficially resembling yohimbine (Found in Yohimbe bark).
All Kratom leaves appear to contain mitragynine, speciogynine, paynanthine, and small quantities of speciociliatine. Oxindole alkaloids usually occur only in small or trace amounts.
In addition to being used as a narcotic in its own right, it is often used to moderate and beat addiction to Opium. Some use Kratom to prolong sexual intercourse.
