During the night: what almost everyone feels
- Nausea and vomiting. Common, often in the first hours. Fasting beforehand and the electrolyte protocol reduce it; the physician manages it.
- Ataxia. Loss of coordination and balance for the length of the experience. You do not walk unaided; that is what the team is for.
- Light and sound sensitivity. Hence the eye mask, the dim palapa and Missoko Bwiti Music and sacred Songs played at a controlled volume.
- A buzzing or humming sound, tremor, sweating. Frequent, harmless, and part of the onset for many.
- A heavy, still body with a racing mind. Not a side effect so much as the experience itself: twelve hours or more of lucid, fast-moving introspection.
The days after
- Deep fatigue on the processing day; most guests sleep much of it.
- Insomnia on the first one or two nights after, common and self-limiting.
- Low appetite for a day or two, then a strong return of appetite.
- Emotional openness, sometimes tears, sometimes a quiet that surprises people. The integration day and the calls after are built for this.
- Clarity and reduced craving for weeks: the effect of noribogaine, the long-lived metabolite, and the reason the three months after matter.
The dangerous one: the heart
Ibogaine lengthens the QT interval and slows the heart rate by blocking hERG potassium channels. On a screened heart with normal electrolytes, this is watched on the monitor and passes. On a heart with a long QT, a conduction problem, low potassium or magnesium, or certain medications in the blood, it can trigger a fatal arrhythmia. Every death attributed to iboga or ibogaine in the literature involves one of those factors or an unsupervised setting. This is why we require an ECG and a blood panel before travel, place IV access before any dose, give magnesium and electrolytes per protocol, and keep a physician in the room with cardiac telemetry running. Read Can iboga kill you? and the Safety page.
Interactions that turn side effects into danger
SSRIs and other antidepressants, some antipsychotics, methadone and long-acting opioids, stimulants, certain antibiotics and antifungals, and anything else that lengthens the QT interval or is metabolized by the same liver enzymes. Alcohol and benzodiazepine withdrawal on their own are dangerous and are never combined with the medicine. Weight-loss injections such as Ozempic, Mounjaro and retatrutide are a separate case, through the stomach and the electrolytes rather than the heart directly: read GLP-1 drugs, retatrutide and iboga. The physician reviews every substance during screening; tapers are planned with your prescribing doctor.
How long does it last
Onset over one to two hours after the first dose. The acute experience lasts twelve hours or more, sometimes up to twenty-four. Ataxia and sensitivity fade with it. Fatigue dominates the next day. Ibogaine itself is cleared within about a day; noribogaine stays for days and its effects on mood, sleep and craving are felt for weeks. Nobody drives, works or travels for at least two days after a ceremony, which is why the program is built with processing and integration days.
Understanding the experience
From the first hours to the days after
First hours
The experience begins
Early changes can include nausea, vomiting, tremor, sweating or a buzzing sensation. Their intensity and timing differ from person to person.
Tell the team what you feel
The physician assesses symptoms and fluid losses. Changes in how you feel should be reported, even when they seem expected.
Through the experience
A still body. An active inner world.
Coordination can be impaired, while light and sound may feel unusually intense. Vivid imagery or a life review can occur; this experience is different for each participant.
Support with every movement
Stay supported and ask for assistance when moving. Medical monitoring and practitioner guidance have different, complementary roles.
The following days
Give recovery its own time
Fatigue can be pronounced. Sleep and appetite may be disrupted as the acute experience recedes. Feeling clearer does not by itself mean that balance or heart rhythm has recovered.
Recovery is assessed individually
Rest, food, fluids and activity follow the team’s assessment. A clock alone cannot determine when someone is ready to drive or travel.
The weeks after
From the experience to daily life
Some people report changes in clarity, mood or craving. These vary and are not guaranteed. Follow-up helps connect the experience with daily habits and identify symptoms that need attention.
Stay connected after the retreat
Share persistent or new symptoms with a clinician. Integration and ongoing care continue beyond the immediate physical recovery.
Who should not take it at all
People with heart disease, a long QT or significant arrhythmia, uncontrolled hypertension, severe liver or kidney disease, active psychosis or recent mania, an unstable eating disorder, and anyone pregnant or breastfeeding. Also anyone on a medication that cannot be tapered in time. The screening exists to find these before you travel; about one applicant in five is declined or postponed.
Questions people ask
Is ibogaine neurotoxic?
Very high doses in animal studies caused damage to cerebellar cells; this has not been observed at the doses used in humans, and the Stanford veterans study reported no such effects. It is one more reason for doses set by experienced practitioners and physicians rather than by guesswork.
Will I hallucinate?
Guests describe images, memories and scenes passing at speed, usually with eyes closed and often as a review of their own life, while remaining aware of the room. It is closer to a vivid, lucid dream state than to hallucination.
Can side effects be reduced?
Yes: fasting before, hydration and electrolytes, an experienced practitioner pacing the doses, a dark quiet space, and a physician for the nausea. Most of the protocol is there to make the night safer and, secondarily, easier.
Are there long-term side effects?
The literature does not describe lasting side effects after a properly supervised single treatment. The lasting effects people report are the ones they came for.