Ibogaine (12-methoxyibogamine) is the active substance, found in the roots of African Tibernanthe (Tibernanthe iboga) as well as in some other types of plants, native for central-west parts of Africa, like Vocanga africana. It is a naturally occurring indole alkaloid in the tryptamine family, which can cause long-term hallucinations.
In its pure form, it is a white, bitter-tasting powder.
By this moment Ibogaine is a law-prohibited substance by USA, Switzerland, Sweden, and Belgium. In other countries like United Kingdom Ibogaine is not specifically listed in the Controlled Substances List. It is legal to buy or import for personal use, but to sell it, administer it to others, or make it available as a treatment would likely be illegal without a prescription.