Start with what 600mg of codeine actually is
Six hundred milligrams a day is the point where codeine stops being the harmless tablet people buy for backache. The analgesic ceiling is around 400mg; above that the extra drug buys sedation rather than pain relief, and the body has long since adjusted. Six hundred is a tolerance dose. It is also, by any clinical measure, a dependence.
Codeine is a prodrug. Roughly a tenth of it is converted to morphine by CYP2D6, so 600mg a day is somewhere in the region of 60 to 90mg of morphine equivalent — enough that stopping produces a genuine withdrawal: sweats, cramping, restless legs, diarrhoea, gooseflesh, insomnia, and a crawling dysphoria that makes the second week harder than the first.
Most people in that position have tried tapering. Most have failed, not from weakness but because codeine tapering is miserable and slow and the dose creeps back. An ibogaine flood dose is the alternative that does in one session what months of tapering does badly.
What a flood dose is
A flood dose is the full therapeutic dose — 10 to 20mg of ibogaine per kilogram of body weight, typically split into a small test dose of 2 to 3mg/kg first, then the balance once the test is tolerated. For an 80kg adult that is 800mg to 1.6g of ibogaine hydrochloride, which is an enormous amount by any standard.
It is not a pleasant experience and it is not sold as one. The session runs twelve to thirty-six hours. There is ataxia, so you cannot walk unaided. There is nausea and often vomiting. There is a period of REM-like dream imagery so vivid it is indistinguishable from waking, which people describe as reviewing their life at speed with no editorial control. And there is a long, flat, sleepless plateau afterwards where the body decides whether it is going to accept the change.
What makes it worth it is that it suppresses opioid withdrawal almost completely within one to two hours, and it does so for days rather than hours. That is not a tapering effect. It is a different mechanism.
Why it works, and why the mechanism is strange
Ibogaine is an indole alkaloid from Tabanthe iboga, a West African shrub used in Bwiti initiation for centuries. Its pharmacology is untidy — sigma-2 agonism, weak mu opioid binding, kappa partial agonism, NMDA antagonism, serotonin and dopamine reuptake inhibition, nicotinic modulation.
The part that matters for dependence is its metabolite. Ibogaine is demethylated by CYP2D6 into noribogaine, which is a considerably more potent mu opioid agonist, is highly lipophilic, and deposits in fat and leaks back out over days to weeks. That slow release is the reason a single dose holds withdrawal at bay far longer than the drug’s own half-life would suggest.
Alongside that, both compounds raise GDNF — glial cell line-derived neurotrophic factor — in the ventral tegmental area, which drives dopaminergic recovery and appears to reset reward circuitry rather than merely substituting for it. Read the Wikipedia entry for the pharmacology and the World Scientific Impact archive for the trial literature.
So the effect is two-layered: a mu agonist bridge that carries you through the acute phase, and a neurotrophic effect that changes what your reward system wants afterwards. That combination is why people describe it as a reset rather than a detox.
The protocol, hour by hour
Screening first. ECG with QTc measurement, electrolytes, liver and kidney function, and a medication review. Anyone above 500ms QTc is usually excluded. This is not optional and a clinic that skips it is not a clinic.
Codeine stopped twelve hours before. Codeine is short-acting; the flood is given in established withdrawal, not before it, because ibogaine has high mu affinity and will precipitate withdrawal if you dose too early. That is the single most common protocol error.
Test dose, then the balance an hour later, once tolerated.
Onset within thirty to ninety minutes. Ataxia, then the dream state. Blood pressure, pulse and continuous ECG for at least the first twelve hours and monitoring for twenty-four to thirty-six.
Magnesium and fluid support during the session. Vomiting is expected; dehydration and electrolyte loss are the things that actually hurt people.
Resolution somewhere between hour twelve and hour thirty. Most people sleep hard afterwards.
No opioids, stimulants or QT-prolonging drugs for seven days while noribogaine clears. That includes coffee, and it includes the codeine you might be tempted to take on day three.
The cardiac risk, without softening it
Ibogaine inhibits the hERG potassium channel and lengthens the QT interval. That is the whole risk, and it is a real one: torsades de pointes, ventricular fibrillation, and deaths — most of them in unsupervised settings, several in people with pre-existing cardiac disease or a concurrent opioid still on board.
In one monitored series, a 10mg/kg dose pushed QTc above 500ms in half of subjects, and it was still above 450ms at twenty-four hours in nearly a third. Nobody in that cohort had a serious event, but the numbers show how little margin there is. Above 12mg/kg the rate of abnormality climbs.
Practical consequences: get an ECG, correct magnesium and potassium first, exclude anyone with a long QT, a recent heart attack, or uncompensated heart failure, and be monitored by somebody who can defibrillate. A retreat in a jungle with no ECG and no oxygen is cheaper for a reason.
Codeine-specific cautions
Codeine sits at the awkward intersection of several issues.
CYP2D6. Codeine needs it to work and ibogaine is metabolised by it. Poor metabolisers get little morphine from codeine and may clear ibogaine slowly; ultrarapid metabolisers get more morphine and are at higher risk of precipitated withdrawal. Genotyping is cheap and worth it.
Combination analgesics. Most 600mg codeine habits are built on co-codamol 30/500, so the paracetamol load is 4g a day and the liver is already working. Check LFTs, and stop the paracetamol properly rather than by halves.
Other sedatives. Benzodiazepines, gabapentinoids and antidepressants all stack. SSRIs both prolong QT and interact with CYP2D6 — fluoxetine and paroxetine are the worst offenders and are often the exact drugs a codeine-dependent person is already on.
Constipation and gut. Chronic codeine slows the bowel badly. Some clinics use a bowel prep before the flood.
Afterwards, which is the part that decides everything
The session is the easy part. Weeks three to twelve are where people relapse.
Noribogaine holds the acute withdrawal off for roughly three to seven days, sometimes longer. After that the sleep is still broken, the mood is flat, and the anhedonia is real. Aftercare is not a luxury add-on; it is half the treatment. Good programmes include follow-up calls, sleep support, structured re-entry, and a plan for the specific moment — usually a bad Tuesday three weeks later — when the pharmacy is on the way home.
Ibogaine is also not a substitute for addressing why the codeine started. Chronic pain, an old injury, an unmanaged anxiety disorder: if the cause is still there, the habit returns to it.
The UK legal position
Ibogaine is not a controlled drug in the UK. It sits outside the Misuse of Drugs Act, and it is exempt from the Psychoactive Substances Act 2016 when supplied by a healthcare professional. What it is, is an unlicensed prescription-only medicine, and that is what stops clinics existing here: nobody can lawfully administer it as treatment without a licence nobody has obtained.
So possession and personal import are tolerated, prescribing is possible by any doctor willing to take responsibility, and treatment happens abroad. The ukmushroom.uk ibogaine guide covers the sourcing reality, and ibogawell.com covers the clinical side in more depth.
Where treatment actually happens
Mexico is the centre of the medical model: $8,000 to $16,000, real clinics, ECG, doctors, and the most experienced hands in the field. Portugal and the Netherlands run retreat and clinical hybrids at $10,000 to $20,000; the Netherlands is ambiguous legally, which suits nobody but functions. South Africa and Costa Rica sit mid-range. Thailand is cheaper and more variable.
United States has no legal clinic structure worth the name despite the demand; Americans travel. Canada is similar, with a small number of research-adjacent programmes. Brazil has a long ibogaine tradition and low costs. Australia and New Zealand have small operations and high prices. Germany and Switzerland are medically excellent and administratively difficult.
Nobody in the UK can do this at home properly. A handful of people run unsupervised floods with a sitter and a home ECG; it works until it does not.
Cost, and what you are paying for
£6,000 to £14,000 all-in for a proper programme, plus flights. The variance is almost entirely medical staffing, monitoring equipment, and aftercare — the drug itself costs tens of pounds. Cheap means thin monitoring. If a quote does not mention ECG, magnesium, or a defibrillator, ask.
Who should not do it
Long QT or a family history of sudden cardiac death. Recent myocardial infarction. Uncompensated heart failure. Significant liver or kidney impairment. Pregnancy. Active psychosis. Anyone who cannot stop opioids for twelve hours. Anyone on amiodarone, sotalol, methadone or high-dose SSRI without review.
The wider stack
Ibogaine is one tool. The rest of the shelf matters too. Psilocybin is the gentler, repeatable option for the mood work that follows — fresh mushrooms UK for immediate use, magic truffles for sale UK because truffles keep, mushroom edibles for anyone who cannot face texture, and mushroom grow kits UK for a supply you control.
Mescaline is the long, forgiving, legally uncomplicated alternative under mescaline cacti UK. For the pain that started the codeine in the first place, pain relief pills and buynembutalpainrelief.com cover it. The all products index is the front door at ukmushroom.uk, ukmushroom.com and shroomrelief.com carry the wider range, and buyoneupmushroombar.us serves American readers.
Frequently asked questions
How much ibogaine is a flood dose? 10 to 20mg per kilogram, usually with a 2 to 3mg/kg test dose first.
Does it stop codeine withdrawal? It suppresses it within one to two hours and holds it off for days via noribogaine. It does not remove the need for aftercare.
How long does the session last? Twelve to thirty-six hours, with a flat recovery period after.
Is it safe? Reasonably, with screening and monitoring. The risk is cardiac and it is not theoretical.
Can I do it in the UK? Not in a licensed clinic. Import and self-administration happen; treatment usually means travel.
Will one dose fix it? Usually the withdrawal, often not the habit. A second session is sometimes needed at three to six months.
Conclusion
Six hundred milligrams of codeine a day is a habit worth taking seriously, and tapering it slowly is a hard way to spend a year. A flood dose interrupts the whole thing in a single night and hands back a body that is no longer in withdrawal.
It also carries a genuine cardiac risk, costs five figures, and requires you to travel, be screened, and be monitored by someone competent. That is the trade.
If you are considering it, get the ECG before you get the flight. Read ibogawell.com properly, ask any clinic for its cardiac protocol in writing, and plan the aftercare before you book. The session is one night. The rest is the treatment.
No Responses