Start with the distinction
Understanding the material
Ibogaine root bark is the dried underground bark of Tabernanthe iboga, a natural plant native to West Central Africa, particularly Gabon. It is botanical material rather than a single standardized drug: it can be shredded, powdered, brewed, or extracted, and its alkaloid content can vary with plant part, geography, harvest, storage, and processing.
Within that material, ibogaine is the best-known psychoactive alkaloid. But the bark also contains other chemical compounds, including ibogamine and tabernanthine. That difference matters: a plant matrix, a total alkaloid extract, purified ibogaine, ibogaine HCl, and noribogaine are related terms, not interchangeable ones.
For a concise comparison of the plant and purified compound, the distinction between iboga versus ibogaine is a useful starting point. A separate overview of the bark-and-alkaloid distinction also underscores that raw material does not offer predictable potency.