Iboga
Iboga, or Tabernanthe iboga, is a perennial rainforest shrub native to West-Central Africa, primarily Gabon and Cameroon. It is the plant, rather than a single chemical. A general botanical overview of Tabernanthe iboga helps separate the living shrub from preparations made from it.
The root bark of the iboga plant has been used for centuries by Indigenous Baka and Fang people, especially within Binga and Bwiti spiritual traditions, for healing, initiation rites, and spiritual exploration. Discussions of traditional use should acknowledge cultural ownership rather than treating a ceremonial practice as a consumer product.
Traditionally, small doses of iboga are used to combat fatigue, while larger ceremonial doses may induce profound visionary states and psychological introspection. A plain-language glossary of related terms can be useful, but definitions do not erase the importance of context, setting, practitioner knowledge, or respect for Bwiti practice.
The plant, a variable botanical preparation, and an isolated compound are related—but they are not interchangeable.
Root bark
Iboga root bark is dried material from the plant’s roots. It can contain several alkaloids, including ibogaine, and its composition may vary by plant, harvesting, processing, age, contamination, and preparation. That variability is one reason a root bark product cannot be assumed to have a predictable dose or effect.
Descriptions of plant material sometimes collapse root bark into “natural medicine.” Natural does not mean standardized, safe, or appropriate for self-treatment. For a product-focused explanation, this overview of what root bark can contain illustrates why composition matters.
Ibogaine and noribogaine
Ibogaine is the primary psychoactive alkaloid found in iboga root bark and is associated with many of its visionary and reported therapeutic effects. It is not the same as the whole plant or a total alkaloid extract. A pharmacology reference on iboga and ibogaine describes the compound alongside important cautions.
Noribogaine is a major metabolite: the body produces it after ibogaine is taken. Noribogaine has a longer half-life, reported up to about 36 hours, than ibogaine itself, reported around two hours. It may contribute to prolonged after-effects and proposed anti-addictive properties, but this does not establish a safe or effective therapy.