Can you drink castor oil? Cleanses, weight loss and facts
Can you drink castor oil? Cleanses and belly-fat tricks keep trending online. Here is what castor oil actually does inside the body, why the lost weight comes back, and who must never take it.
Can you drink castor oil? Only the medicinal kind, as a short-term laxative on a doctor's or pharmacist's advice, and it is a harsh one. It does not cleanse your body or melt away fat. Castor oil sold for hair and skin, including ours, is for external use only and should never be drunk.
The "castor oil cleanse" keeps returning on social media, usually with a photo of a flatter stomach the next morning. The flatter stomach is real for a day or two. The reason for it is not what the videos suggest, and the risks are rarely mentioned.
At a glance
- Castor oil is about 90% ricinoleic acid, the fatty acid that makes it thick and sticky, and that acid acts on the muscles of the gut and the womb.
- Taken by mouth, medicinal castor oil is a strong stimulant laxative. It empties the bowel; it does not remove fat.
- Weight lost after a "cleanse" is water and stool, and it returns once you eat and drink normally.
- Rubbing castor oil on the belly or into the navel does not melt fat.
- Never take castor oil in pregnancy unless your own doctor tells you to. It can trigger contractions.
Can you drink castor oil at all?
Only castor oil made and labelled as a medicine, and only on medical advice. It has a long history as a purgative and is still sold in some pharmacies for occasional constipation, but gentler laxatives have largely replaced it because it works abruptly and often causes cramps.
Castor oil sold for hair, lashes, skin and massage is a different product, made and labelled for use on the body. Our castor oil belongs in that group: it is for external use only. Do not drink it, and keep it away from children.
Even pharmacy castor oil can do harm in large amounts. The US National Library of Medicine lists stomach cramps, nausea, dizziness, fainting and trouble breathing among the signs of a castor oil overdose. The castor seed itself contains ricin, a powerful poison, which is one more reason to keep every bottle out of children's reach.
How does castor oil work inside the body?
It makes the muscles of the bowel squeeze hard. That is why it acts within hours, why it cramps, and why it is risky in pregnancy.
In the small intestine, digestive enzymes free ricinoleic acid from the oil. A 2012 study in the journal PNAS found that ricinoleic acid switches on a receptor called EP3 on smooth muscle, the involuntary muscle that lines both the gut and the womb. In mice, this made the gut push its contents through quickly and made the womb contract. Mice without the EP3 receptor showed neither effect. The work was done in animals and cells, but it fits what doctors have seen in people for generations.
Castor oil for weight loss: does it work?
No. The scale may drop after a castor oil cleanse, but what you lose is water and the contents of your bowel, not fat.
Most of the calories in food are absorbed in the small intestine, before a stimulant laxative hurries things through the large bowel. So a laxative empties you out; it does little to stop you absorbing food. As soon as you eat and drink normally, the weight comes back. Using laxatives again and again to control weight can lead to dehydration and upset the body's balance of salts (electrolytes). If you find yourself reaching for laxatives to manage your weight, please talk to a doctor. It is more common than people think, and help is available.
| Claim | What actually happens |
|---|---|
| "A castor oil cleanse clears out your system" | It empties the bowel fast. The liver and kidneys clear the body's waste every day without any cleanse. |
| "You lose weight overnight" | You lose water and stool. Body fat is unchanged and the weight returns within days. |
| "Rub it on your belly to melt fat" | Oil on the skin softens the skin. It cannot reach or dissolve the fat beneath. |
| "Castor oil in the navel slims the waist" | There is no evidence for this at all. |
| "A spoonful a day keeps you regular" | Regular laxative use needs medical advice; constant constipation deserves a proper check. |
Can castor oil burn belly fat if you rub it on?
No. Oil massaged into the skin stays in the skin's outer layers; it does not pass through to the fat underneath or break it down.
A slow belly massage can feel soothing, and that is a fine reason to enjoy one. But your waist changes only with what you eat, how much you move and time. We looked at the related tradition of castor oil packs and navel oiling separately, with the same honest verdict.
Is a castor oil cleanse safe?
Not as a routine, and not without medical advice. A strong laxative dose can bring on painful cramps, sudden diarrhoea, nausea, dizziness and dehydration.
For occasional constipation, the gentle basics come first: more fibre from fruit, vegetables, dal and whole grains, plenty of water, regular movement, and not ignoring the urge to go. If that is not enough, a pharmacist can suggest a suitable laxative. The NHS advises speaking to a doctor or pharmacist if laxatives have not helped after three days, and not taking over-the-counter laxatives for longer than seven days without advice. Constipation with severe pain, blood or unexplained weight loss needs a doctor promptly.
Who must never take castor oil by mouth?
- Pregnant women, unless their own obstetrician advises it. Ricinoleic acid acts on the muscle of the womb, which is why castor oil has long been used to try to start labour. Never try this at home.
- Babies and children, unless a doctor prescribes it. Children lose fluids quickly.
- Breastfeeding mothers, without first checking with a doctor or pharmacist.
- Anyone with unexplained stomach pain, vomiting, or a suspected bowel blockage or appendicitis.
- People with bowel disease or on regular medicines, such as diuretics or heart medicines, which dehydration can affect. Ask your doctor first.
If someone swallows a large amount of castor oil, or a child drinks any, call your local poison helpline or emergency number straight away.
Where our castor oil belongs
Our Truly Cold Pressed castor oil is pressed slowly in a wooden ghaani, and it is for external use only. It earns its place on the outside of the body: a drop on dry cuticles, a little on cracked heels, or a thin coat on the scalp before washing. Our guides to castor oil for nails and cuticles and castor oil for hair show honest, safe ways to use it.
The bottom line
Medicinal castor oil can be swallowed only as a short-term laxative on medical advice, and it is a harsh one. It does not cleanse, slim or burn belly fat; the weight that drops is water and stool. Keep cosmetic castor oil, including ours, on the outside of the body.
Frequently asked questions
How much castor oil should I take for constipation?
We do not give doses, and you should not guess one. Castor oil is a harsh stimulant laxative, and the right choice depends on your age, health and medicines. A pharmacist or doctor can tell you whether you need a laxative at all and which gentler option suits you. Never swallow cosmetic castor oil.
Can castor oil start labour?
Castor oil has a long history as a home method to bring on labour, and research explains why: ricinoleic acid makes the muscle of the womb contract. It also commonly causes nausea, cramps and diarrhoea, and starting labour needs medical monitoring. Never take castor oil in pregnancy unless your own obstetrician advises it.
Does a castor oil cleanse clear waste from the body?
It empties the bowel, and that is all. The body clears waste continuously through the liver, kidneys, lungs and gut, and no cleanse has been shown to do that job better. The light, empty feeling after a cleanse is simply an emptied bowel and some lost water.
Is it safe to put castor oil in the belly button?
On healthy, unbroken skin, a drop of castor oil in the navel is generally harmless for adults, though it will not slim your waist. Skip it if the skin there is broken, sore or infected, and patch test on your forearm first if your skin is sensitive.
How do you take castor oil to cleanse the stomach?
We would not. A healthy gut does not need cleansing, and castor oil empties it harshly, with cramps and watery diarrhoea. If a doctor prescribes medicinal castor oil for a specific reason, follow their dose and timing exactly. Cosmetic castor oil, including ours, should never be swallowed.
Is castor oil safe for children to swallow?
No, not unless a doctor prescribes it. Children dehydrate quickly, and a strong laxative can cause cramps, diarrhoea and dangerous fluid loss. Keep every bottle of castor oil out of reach. If a child swallows some, call your local poison helpline or emergency number straight away.
