A long tail is not a long answer
Ibogaine is metabolized to noribogaine, a compound commonly described as longer-acting. That timing matters because a person may be moving through the aftermath of an acute experience while an active metabolite remains present. The basic sequence is central to the pharmacokinetic picture: concentrations change over time, and receptor engagement need not line up neatly with the most dramatic subjective hours.
That is a plausible contribution to reports of a prolonged shift. It is not proof that a receptor state remains “reset” for months, nor does it establish treatment efficacy. Metabolism differs across people, and duration in the body is only one part of duration in lived experience. For an independent overview of what ibogaine therapy is commonly said to involve, the important distinction is between a pharmacological window and a claim of lasting outcome.
“Half-life” describes how concentration falls over time. It does not, by itself, measure recovery, learning, safety, or a durable change in behavior.
Noribogaine has been discussed for activity at opioid-related targets and monoamine transporters. Opioid receptors are a broad receptor family with roles in pain, reward, and other functions; the overview of opioid receptors is useful background, but it should not be mistaken for evidence that one pattern of receptor activity produces one predictable human result.