Ibogaine clinical protocols typically involve a single dose, with lasting effects documented at 12 months (Noller et al., 2018; Davis et al., 2017). Most ceremonial iboga contexts involve 1 to 3 lifetime sessions. Ayahuasca is generally used across many ceremonies: the therapeutic model is iterative, with each session building on the last. Experienced practitioners often describe the work as ongoing rather than complete after any fixed count.