Iboga (Tabernanthe iboga) is a sacred plant from Central Africa, particularly central to the Bwiti spiritual traditions of Gabon and neighboring countries, where it is used in initiation, healing and community rituals. Its main active alkaloid, ibogaine, has drawn international attention for its potential in addressing substance use disorders, while raising urgent questions about sustainability, biocultural rights and protection of source communities. ICEERS gathers here scientific, cultural and legal content on iboga.