Ibogaine and Coming Off Antidepressants

This is one of the most common reasons people write to sites like this one, and it contains two questions that are usually asked as one.

The two questions

Can ibogaine help me stop an antidepressant? That is a question about efficacy, and nothing has been asked or answered.

What happens if I take ibogaine while on one, or shortly after stopping? That is a question about interaction, and it has real answers, none of them reassuring.

The first question has no literature. The second has enough to be specific about. That asymmetry is the page.

Nobody has studied the first question

The trial registry holds nine ibogaine studies. Their indications are opioid use disorder and withdrawal, PTSD and brain injury, alcoholism, and substance-use surveys. None concerns antidepressant discontinuation.

No cohort has reported it as an outcome. No case series describes it as an indication. The claim that ibogaine can free someone from an SSRI is an extrapolation from the opioid literature, and the extrapolation has never been tested.

The interaction runs the wrong way

The enzyme that clears ibogaine from the body is CYP2D6, and several of the most-prescribed antidepressants inhibit it.

In a controlled study, healthy volunteers took six days of paroxetine or placebo before a single low dose of ibogaine. Combined exposure to the active moiety, ibogaine plus its metabolite noribogaine, was about twice as high after paroxetine. Exposure to noribogaine on its own was similar in both groups, so what rose was the circulating parent drug.

Doubling exposure is the opposite of what anyone would want, because the harm ibogaine does to a heart is concentration-related. Drug interactions sets out the full list, and what it does to a heart explains why concentration is the variable that matters.

Some antidepressants add a second, separate problem. Citalopram lengthens the QT interval in its own right, and its label instructs avoidance alongside other QT-prolonging drugs. That is the same interval ibogaine lengthens, by a different route.

The washout is the part nobody counts

Clinics resolve the interaction by requiring people to stop.

The methods of the Nature Medicine veteran study record that participants had to discontinue all psychiatric medications before arrival. That is the standard approach, and it is worth seeing clearly for what it does to a person in this situation.

Someone taking an antidepressant because it is holding their depression is being asked to stop it, unsupervised, in the weeks before travelling to take a substance that has no evidence for their condition and a documented cardiac risk. The washout is not a preliminary. It is part of the intervention, and it is the part with the least oversight.

And stopping is not trivial

How often stopping an antidepressant produces withdrawal symptoms is genuinely disputed, and the dispute is recent.

An influential systematic review concluded that withdrawal effects are not particularly common and rarely severe. A 2025 reanalysis in Psychological Medicine argued that most of the underlying data came from industry efficacy trials where withdrawal was a minor consideration, and that symptoms were estimated from spontaneously reported adverse events. Restricting the analysis to the five studies that measured withdrawal systematically gave a pooled incidence of 55 per cent, with a confidence interval running from 31 to 81 per cent.

That is a wide interval and the authors say so. The useful conclusion is not a number. It is that the question is unsettled, that the higher estimates come from the studies that actually looked, and that in most of those studies people had been taking the drug for twelve weeks or less, which is not the situation most readers of this page are in.

What this page will not tell you

It will not tell you how to come off an antidepressant. That is a decision for the person who prescribed it, it depends on the drug and on how long it has been taken, and getting it wrong has consequences that have nothing to do with ibogaine.

What it can tell you is that the ibogaine route asks you to do that difficult thing first, alone, in order to reach something that has never been shown to help with it.

If depression is the reason for the interest, what is known about ibogaine and depression covers how little that is. If you are on a mood stabiliser rather than an antidepressant, bipolar disorder covers a sharper version of the same problem.