Ibogaine is an indole alkaloid associated with the West African shrub Tabernanthe iboga. “Iboga” can refer to plant material or preparations made from it; their composition may vary by source, processing, and dose. That variability matters when people speak as if every preparation has the same contents or effects.
Noribogaine is a metabolite: it is formed as the body processes ibogaine. It has pharmacological activity of its own and may remain present after ibogaine itself declines. Pharmaceutical ibogaine hydrochloride, often called ibogaine HCl, refers to a salt form intended to be more chemically defined than a whole-plant preparation. More standardized material does not remove the need to consider risk, dose, screening, or setting.
Ibogaine
The parent compound most often discussed in research and policy.
Noribogaine
An active metabolite produced after ibogaine is processed by the body.
Iboga preparations
Plant-derived materials whose chemical makeup can be less predictable.
Ibogaine HCl
A more defined salt form, not a synonym for demonstrated safety or approval.