Neuroplasticity is a broad term for the nervous system’s capacity to change in response to experience, activity, injury, and other conditions. The basic concept of neuroplasticity includes changes at more than one scale, from synaptic signaling to wider patterns of learning and adaptation.
That breadth is useful, but it can also obscure the question being asked. A report of altered neurite growth in cultured cells is not the same evidence as a change in animal behavior, and neither is the same as a durable outcome in a controlled human study. The distinction is central to an evidence-first account of ibogaine as a psychedelic drug.
Ibogaine is often described in discussions of substance use, mood, and transformative experiences because it has a complex pharmacology and because researchers are interested in its possible effects on neural systems. Context about ibogaine and extreme alcoholism can make the stakes of these discussions clearer, but a mechanism is not a clinical promise.
Evidence of biological change can be an important starting point. It is not, on its own, evidence that a treatment works for a particular person or condition.