The Purge, Explained: Why It Happens and Whether You Can Avoid It
Updated: Oct 14
More people cancel over this than over anything else. Not the visions, not the fear of losing control — the bucket.
I understand it. Being told that the healing experience you have saved for involves vomiting in a dark room full of strangers is a genuinely off-putting piece of information, and most of what is written about it online is either dismissive ("it's part of the process!") or so mystical that it answers nothing.
So let us do it properly. What is actually happening in your body, what forms it takes, and what you can and cannot control.
The physiological answer
Two things are going on at once.
The first is direct emetic action. Harmala alkaloids — harmine and harmaline in particular — stimulate the chemoreceptor trigger zone in the brainstem, the same mechanism that drives nausea in motion sickness or chemotherapy. This is not incidental to the brew. It is a known pharmacological property of the vine.
Harmaline in particular has been described in the pharmacological literature as strongly emetic.
The second is preparation. The brew is bitter, tannin-heavy, and often served warm on an empty stomach after days of dietary restriction. Your gut has good reason to object.
There is also a plant-preparation variable that almost nobody mentions. Where the vine is boiled with the bark left on, the brew carries far more tannins and is considerably more purgative. In the Colombian tradition the bark is typically stripped before boiling, which produces a brew that induces less vomiting. Two ceremonies with the same nominal medicine can differ substantially on this point.
Purging is not only vomiting
This is the part that changes how people relate to it. In the traditions, "purging" describes a whole category of release, and vomiting is just its most visible member.
Yawning. Persistent, uncontrollable yawning is extremely common and is understood as release.
Crying. Often with no accompanying narrative — grief with no story attached to it.
Shaking and trembling. Frequently in the legs, hips and jaw. This is close to what somatic therapists call discharge.
Sweating, burping, coughing, sneezing.
Laughter. Genuinely — some people purge through laughing until their stomach hurts.
Diarrhoea. Less discussed and worth being prepared for.
Heat, and then cold. Often in waves.
I have watched people spend an entire ceremony convinced nothing was happening because they had not been sick, while shaking from the hips down for two hours. That is the purge. It just did not look the way they expected.
Can you avoid it?
Partly. Here is the honest breakdown of what you control.
What genuinely reduces it
Following the dieta properly. This is the largest single factor. Participants who arrive after weeks of processed food, alcohol and caffeine spend their first ceremony cleaning out and rarely get further. Those who prepare tend to move through the physical layer faster.
Hydration in the days before — not the hours before. A stomach full of water at the moment you drink makes things worse.
Not eating on ceremony day. Follow whatever your facilitators specify. The instruction exists for this reason.
Not fighting it. This sounds like mysticism and is actually mechanical. Clenching against nausea for forty minutes prolongs it. People who let it come are usually finished sooner.
What does not work
Willpower. Trying to hold the brew down as a test of strength does not make the ceremony deeper. It makes it longer.
Anti-nausea medication. Do not do this. Many antiemetics are serotonergic or act on the same receptor systems the brew is already engaging. This is a real interaction risk, not a preference — raise it in your health evaluation rather than solving it privately.
Eating beforehand "to line the stomach." Reliably worse, and depending on what you eat, unsafe — the brew is an MAO inhibitor and tyramine-rich food carries a hypertensive risk.
What it is like in the room
Two things surprise almost everyone.
The first is that nobody is looking at you. In a well-held ceremony the room is dark, everyone is deep in their own process, and facilitators move quietly. The social exposure you are imagining does not materialise.
The second is the relief. The overwhelming majority of people describe the moments after purging as the point where the ceremony actually opens — where the resistance they had been carrying, sometimes for hours, drops away. There is a reason people end up speaking about their bucket with something close to affection by the end of a retreat.
The purge is not the price of the experience. Very often it is the experience — the moment the body finally stops arguing.
If you have an eating disorder history
This needs saying plainly, because it is rarely said at all.
If you have a history of bulimia or any purging-type eating disorder, induced vomiting is not a neutral event for you. It can be re-triggering in a way that has nothing to do with the medicine, and a ceremony is a poor environment in which to discover that.
This is not automatically a disqualification, but it must be disclosed before you book, not mentioned in passing on arrival. Tell us, and we will talk through whether and how to proceed.
Note. This article is educational and is not medical advice. Retreats are not medical treatment. Disclose all relevant medical and psychiatric history during screening.
If you are still weighing this up, the plant medicine FAQ covers the practical questions, and a health evaluation call is where the personal ones get answered.
Ritshi Zenati, Speaker & Life Coach
Founder at Holistika Center.
Holistika Center holds plant medicine retreats across Barcelona, Málaga, Mallorca, Switzerland, Germany, Norway, Colombia and Mexico.
Also, different programs like Microdosing, Life and Spiritual Guidance, etc.
Visit Holistika Center to explore upcoming programs.
Comments