This article is about a practice that involves deliberately inducing vomiting.
Before anything else: if you have any history of an eating disorder, or of purging behaviour of any kind, this practice is not for you. No traditional framing changes what the behaviour is, and the spiritual context makes it more dangerous rather than less, because it supplies a justification that is difficult for you or anyone around you to argue with.
That said plainly, the rest of this article explains what the practice is, where it comes from, what the actual risks are, and — further down, after those risks — how it is performed.
The method is deliberately placed at the end. Read what precedes it. The contraindications are extensive, the frequency limit matters more than the technique, and the reasons to reconsider are the most important content on this page.
What the Names Mean
The practice has several names, which tells you something about how widely it travelled.
Vaman dhauti — vaman means to vomit; dhauti means washing.
Kunjal kriya — from kunjar, meaning elephant, named for the elephant's ability to draw water up through its trunk and expel it. This is the name most commonly used today.
Gaja karani — gaja is another word for elephant. This is the name the Hatha Yoga Pradipika uses.
Vyaghra kriya — vyaghra means tiger, named for the tiger's habit of regurgitating a meal. This refers to a variant performed some hours after eating rather than on an empty stomach.
What the Texts Say
Hatha Yoga Pradipika 2.38 describes it briefly, immediately after the shatkarma section. By carrying the apana vayu upward to the throat, the contents of the stomach are expelled; by degrees the system of nadis becomes known. This, it says, is called gaja karani in Hatha.
Note that Svatmarama frames it in terms of reversing the direction of apana — the downward-moving vital wind — rather than as a hygiene procedure. It is also not one of his six; it appears alongside them as a related practice.
The Gheranda Samhita places vaman dhauti under hrid dhauti, the cleansing of the throat and chest region, alongside danda dhauti and vastra dhauti. The instruction is to drink water to the throat, look upward briefly, and then expel it, with the claim that daily practice relieves disorders of kapha and pitta.
Both descriptions are short. Neither text elaborates the modern protocol of measured quantities of warm salt water, and neither discusses contraindications.
What the Practice Consists Of
In outline, so that you understand what is being described.
The practitioner drinks a substantial quantity of warm salted water on an empty stomach, quickly, until the stomach is full. The water is then expelled by triggering the gag reflex, so that what was drunk comes back up along with the stomach's contents.
The traditional timing is first thing in the morning. The vyaghra variant is performed a few hours after a meal instead, with the intention of expelling food rather than water.
That is the whole practice. Its simplicity is part of why it has spread so widely and why it is so often attempted without any consideration of whether it is a good idea.
What It Is Claimed to Do
Traditional claims centre on the removal of excess kapha and pitta, relief of acidity, and the clearing of the upper digestive tract. Modern presentations add asthma relief, improved digestion, detoxification, and — very commonly — weight loss.
The defensible part is narrow. The practice does empty the stomach, and it does clear mucus from the throat and oesophagus on the way. People with certain kinds of acidity or upper-respiratory congestion sometimes report short-term relief, and there is nothing implausible about that.
Everything beyond it is unsupported. It does not detoxify — the stomach is not a toxin reservoir, and the liver and kidneys handle that continuously. And it is not a weight-loss practice, for reasons covered below.
Why This Practice Requires Particular Caution
Deliberate self-induced vomiting is the defining behaviour of bulimia nervosa and of purging disorder. That is not an argument by association; it is a description of what the practice physically is.
This matters in three specific ways.
It can serve as an entry point. For someone vulnerable, a practice that legitimises purging, is described as cleansing, and produces an immediate sensation of lightness and emptiness can become the beginning of something considerably harder to stop.
It can trigger relapse. For someone in recovery, performing the behaviour in a sanctioned setting can reopen a pattern that took a long time to close.
The framing makes it hard to challenge. Purging described as a spiritual cleansing practice is much harder for a friend, partner or teacher to question than purging described as itself. The vocabulary provides cover.
Combine that with the fact that kunjal kriya is widely promoted for weight loss, and the risk becomes concrete rather than theoretical. The temporary weight change after the practice is water. It returns within hours. Anyone presenting it as a slimming technique is either uninformed or dishonest, and that framing is precisely what draws in the people most likely to be harmed.
If any of this describes your situation, or you find yourself drawn to the practice for reasons connected to weight or control rather than to yoga, that is worth talking to a doctor about. It is a common thing, it is treatable, and the conversation is easier than it looks from the outside.
The Physical Risks
Setting the above aside, the practice carries ordinary physical risks that are rarely mentioned alongside it.
Dental erosion. Stomach acid dissolves tooth enamel, and enamel does not regenerate. Repeated exposure causes permanent damage. This is the best-documented harm of habitual vomiting and it accumulates silently.
Oesophageal injury. Forceful vomiting can tear the lining at the junction of the oesophagus and stomach. Rarely, more serious rupture occurs. Blood in what is expelled is a medical emergency, not a sign of deep cleansing.
Electrolyte disturbance. Stomach contents are acidic and rich in chloride and potassium. Repeatedly expelling them disturbs blood chemistry, and potassium depletion in particular affects cardiac function.
Aspiration. Inhaling stomach contents into the lungs can cause a serious pneumonia. Risk rises considerably if the practice is attempted while unwell, impaired, or alone.
Sodium load. The salt water itself matters for anyone with high blood pressure, heart failure or kidney disease.
Raised pressure during retching. Intra-abdominal, intrathoracic and intraocular pressure all spike, which is why the conditions listed below are contraindications.
Who Should Not Practise It
Anyone with a history of an eating disorder or purging behaviour — this is absolute, and no supervision makes it appropriate.
Do not practise, or seek medical advice first, if you have:
- Pregnancy — at any stage
- High blood pressure, heart disease, or a history of stroke
- Peptic ulcers, gastro-oesophageal reflux disease, or a hiatal hernia
- Any hernia
- Glaucoma or raised intraocular pressure
- Oesophageal varices, or any liver disease
- Kidney disease
- Recent abdominal, chest, or eye surgery
- Diabetes, without specific medical advice
Children should not be taught it. Nor should anyone practise it alone if they are unwell.
Before Any of the Method Matters
Four conditions. If any one is missing, the technique below is irrelevant.
None of the contraindications above apply to you, and you have been honest with yourself about the eating disorder question rather than technically honest.
You are learning it in person, from a teacher who has supervised it and who screens students rather than simply demonstrating.
You are not doing it for weight, appearance, or control. If any of those is among your reasons, stop here.
You accept a hard frequency limit before you start, rather than deciding afterwards. More on this below, because it matters more than anything else on this page.
The Method
Practise first thing in the morning, on a completely empty stomach — nothing eaten since the previous evening. The vyaghra variant, performed after a meal, is a different practice and not one to take up independently.
Prepare the water. Around one and a half to two litres of warm water — body temperature, not hot — with roughly one level teaspoon of non-iodised salt per litre. The salt reduces nausea and makes the water less palatable to retain, which is the point.
Drink it quickly, standing or seated, in continuous succession. Glass after glass without pausing to consider it.
Drink until you genuinely cannot drink any more. This is the single most important instruction in the technique, and it is where most people go wrong. A full stomach empties easily, almost of its own accord, with minimal effort. A half-full stomach requires forceful retching against resistance, and forceful retching is what tears oesophageal tissue. If you stop at four glasses because it is unpleasant, you have made the practice more dangerous, not less.
You will know when you are full. The water will feel as though it is sitting at the top of the stomach and the next mouthful will be genuinely difficult.
Move to the toilet or a basin. Lean forward from the hips, feet apart, one hand on the toilet or a support.
Wash your hands first, and keep your nails short. Place two fingers — index and middle — flat against the back of the tongue and press gently downward and back. Do not push deep, and do not use any implement: spoons, toothbrushes and similar objects cause injury to the throat, and this is the most common source of avoidable harm in the practice.
The water should come up easily and in volume. If it does not, you have not drunk enough — the answer is to drink more, not to press harder.
Repeat until the stomach is empty, usually two or three rounds, taking a few minutes in total. What comes up should be essentially the water you drank.
Stop when the stomach is empty. Do not continue trying to bring up more.
Rest for a few minutes. Sit quietly. The abdomen may feel slightly tender.
Immediately Afterwards
Rinse your mouth thoroughly with plain water. Swilling with water containing a little bicarbonate of soda is better still, since it neutralises residual acid.
Do not brush your teeth for at least half an hour. Enamel softened by stomach acid abrades under a toothbrush, and brushing straight afterwards causes more damage than the acid exposure itself. This single instruction, followed consistently, prevents most of the dental harm associated with the practice.
Eat something light within thirty to sixty minutes — khichari, plain rice, or something similarly soft and bland. Avoid anything acidic, spicy or cold for the rest of the day.
Do not practise anything strenuous afterwards. Rest, then a normal day.
Frequency — the Part That Actually Determines the Risk
Technique determines whether a single session goes well. Frequency determines whether the practice harms you.
The physical harms here — enamel erosion, oesophageal irritation, electrolyte disturbance — are almost entirely cumulative. A correctly performed session once in a while is a very different proposition from the same session every week for two years.
Some traditions teach it weekly. The dental and behavioural picture argues for considerably less, and a sensible ceiling for most practitioners is occasional use when there is a specific reason — a few times a year at most.
Two hard stops, and neither is negotiable:
Stop permanently if you find yourself wanting to do it more often, scheduling it, or feeling that you need it.
Stop permanently if it becomes connected in your mind to weight, appearance, or a sense of control. That is the pattern this article opened with, and noticing it early is the whole reason for naming it.
Neither of these is a technique problem, and neither improves with practice.
When to Stop Mid-Practice
Stop, and seek medical help where indicated:
- Blood in what comes up — stop and seek medical attention
- Severe pain in the chest, throat or abdomen
- The water will not come up despite a full stomach — stop rather than escalating the effort
- Retching that will not settle once the stomach is empty
- Dizziness, faintness, or breathlessness
- Coughing or choking during the practice, which suggests aspiration and warrants medical attention if breathing difficulty or a cough persists
What to Do Instead
Most people who look up this practice are looking for relief from something specific.
For acidity and reflux — this is a medical issue with effective treatments, and the practice can make reflux worse rather than better by relaxing the barrier between stomach and oesophagus.
For upper-respiratory congestion — jala neti, steam, and hydration achieve the clearing effect without any of the risk.
For a heavy, sluggish digestive system — agnisara kriya, uddiyana bandha, adequate hydration and movement, all of which are safe and repeatable.
For weight — nothing in the cleansing practices addresses this, and the ones that appear to are producing temporary fluid loss.
Persistent symptoms in any of these categories are worth taking to a doctor rather than to a kriya.
Common Misunderstandings
1. That it detoxifies. It empties the stomach. The stomach does not store toxins.
2. That it aids weight loss. The change is fluid and returns within hours. This claim is the main reason the practice is attempted by people it can harm.
3. That the traditional context makes it safe. The classical texts describe it in one or two verses, with no contraindications and no discussion of frequency. They were not written with modern knowledge of dental erosion, electrolyte physiology, or eating disorders.
4. That it is one of the six shatkarmas. It is not in the Pradipika's list of six; it appears separately as gaja karani. Gheranda places it within hrid dhauti.
5. That discomfort means it is working. Blood, severe pain, or difficulty breathing afterwards are medical signs, not signs of progress.
Conclusion
Kunjal kriya sits at the edge of the cleansing practices, and the honest position is that most people should leave it there.
The classical basis is thin — a verse or two, with no safety guidance. The claimed benefits are largely available through gentler practices. The physical risks are real and cumulative. And the behavioural risk, for a meaningful minority of the people who will read about it, is serious enough on its own to warrant the caution at the top of this article.
There is a version of this practice that a healthy adult can perform occasionally, under supervision, without harm. That version exists and it is legitimate. It is also not what most people encounter, which is a technique promoted online as a detox and a way to lose weight, attempted alone, and repeated.
If you take one thing from this: the practice is not a way to manage your weight, and if that is any part of why it appeals, the appropriate next step is a conversation with a doctor rather than a glass of salt water.
Frequently Asked Questions
What is kunjal kriya?
Kunjal kriya, also called vaman dhauti, is a yogic practice in which warm salt water is drunk on an empty stomach and then expelled by inducing vomiting. The Hatha Yoga Pradipika refers to it as gaja karani.
Is kunjal kriya safe?
For a healthy adult, performed rarely and under supervision, it is generally tolerated. Practised habitually it causes dental erosion and can disturb electrolytes. It is contraindicated in pregnancy, high blood pressure, heart disease, ulcers, reflux, hernia and glaucoma, and it should never be practised by anyone with a history of an eating disorder.
Does kunjal kriya help with weight loss?
No. Any weight change is fluid and returns within hours. Presenting it as a weight-loss practice is a misrepresentation, and one with real potential for harm.
Is kunjal kriya one of the six shatkarmas?
Not in the Hatha Yoga Pradipika, which lists it separately as gaja karani. The Gheranda Samhita places it within hrid dhauti, one of the four divisions of dhauti.
How often can kunjal kriya be practised?
Occasionally at most, and only where there is a specific reason. Frequent practice is where the physical harms accumulate. Wanting to do it more often is a reason to stop.
What are the alternatives?
For congestion, jala neti and steam. For sluggish digestion, agnisara kriya and uddiyana bandha. For acidity or reflux, medical advice, since the practice can worsen both.