Concern guide
Herbs for IBS
Herbs that may ease IBS pain, bloating and bowel changes, from peppermint oil to chamomile, with what the research shows.
6 herbs reviewed
Updated October 7, 2026
Irritable bowel syndrome (IBS) is one of the most common gut conditions: recurring belly pain linked to bowel movements, together with changes in how often or how easily you go. Some people mostly have constipation, some mostly diarrhea, and some swing between the two, and bloating and wind often come along too. Symptoms tend to come and go, often flaring with stress, certain foods, or after a stomach bug. IBS can be frustrating and disruptive, but it is a real, recognized condition, and there is a lot people can do to feel better.
Getting a diagnosis comes first, because the same symptoms can come from celiac disease, inflammatory bowel disease, or, less often, bowel cancer. A doctor diagnoses IBS from your symptoms, history, and an examination, sometimes with a few simple tests, and the American College of Gastroenterology (ACG) suggests checking for celiac disease and bowel inflammation when diarrhea is part of the picture. From there, herbs can sit comfortably alongside the other tools that help: regular meals, a limited trial of a low-FODMAP diet, which the ACG recommends and which works best with a dietitian’s guidance, gut-directed psychological therapies, and prescription medicines matched to your main symptoms.
The herbs below are ordered by strength of evidence for IBS, then by how commonly they are used. Ratings run from good clinical evidence to long traditional use, and IBS is one of the few concerns where herbs have mainstream backing: the ACG suggests peppermint oil and recommends soluble fiber such as psyllium. The others are traditional European remedies for cramping, bloating, and wind that have not yet been tested in IBS trials, so research on them is still emerging. Because IBS differs from person to person, the best fit often depends on whether pain, bloating, constipation, or diarrhea troubles you most. The full monographs cover doses, side effects, and interactions.
02 The shortlist
The herbs, from best studied to time-honored
How to read the ratings
- Good clinical evidence
- Promising clinical evidence
- Early or mixed evidence
- Long traditional use
Ratings show how much research backs each herb for this particular concern. Every herb links to its full monograph, with preparations, safety notes, and sources.
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01 Peppermint
Good clinical evidenceMentha × piperita
Enteric-coated peppermint oil is the best-studied herb for IBS, and the American College of Gastroenterology suggests it for overall symptoms. In a 2022 meta-analysis of 10 trials it eased global symptoms and abdominal pain more than placebo, with about four people treated for one to benefit, and EMA accepts the capsules as well-established for cramping, wind, and pain. Evidence quality is still low and one large recent trial missed its main goal. Peppermint can worsen heartburn, so coated capsules taken before meals matter.
Read the peppermint monograph →
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02 Psyllium
Good clinical evidencePlantago ovata
Psyllium husk is a gel-forming soluble fiber, and the ACG recommends soluble fiber such as psyllium for overall IBS symptoms, while wheat bran tends not to help. In a 275-person primary-care trial, 57% of people taking 10 g a day reported adequate relief in the first month, versus 35% on placebo, and EMA accepts the husk as a fiber supplement in constipation-predominant IBS. Wind and bloating are common at first and usually settle. Take each gram with at least 30 ml of liquid, apart from medicines.
Read the psyllium monograph →
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03 Chamomile
Long traditional useMatricaria chamomilla
Chamomile tea is a gentle, familiar choice for a crampy, unsettled gut. EMA accepts German chamomile flower as a traditional remedy for minor digestive complaints such as spasms, bloating, and belching, and in the laboratory its bisabolol shows antispasmodic activity. It has not yet been tested in IBS trials, so it is best enjoyed as a soothing cup alongside proven care rather than in place of it. People allergic to ragweed, daisies, or other daisy-family plants can react, rarely severely.
Read the chamomile monograph →
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04 Slippery Elm
Long traditional useUlmus rubra
Slippery elm inner bark forms a soothing gel in water and is a popular choice for IBS. In a small 2010 pilot, a blend of slippery elm, oat bran, lactulose, and licorice increased bowel movements by 20% in 10 people with constipation-predominant IBS; the study had no control group and slippery elm was one ingredient of several, so controlled trials would help. LiverTox finds no sign of liver harm. Take it half an hour to an hour apart from medicines, and check blends for licorice.
Read the slippery elm monograph →
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05 Lemon Balm
Long traditional useMelissa officinalis
Lemon balm is a lemon-scented mint-family herb accepted in Europe as a traditional remedy for mild digestive complaints such as bloating and wind, and also for mild stress, which many people find goes hand in hand with IBS flares. Trials of lemon balm on its own for digestive symptoms have not been done yet, and the encouraging results so far come from combination products. It may cause drowsiness, is not recommended under 12 or in pregnancy, and people with thyroid conditions should discuss regular extracts with a doctor.
Read the lemon balm monograph →
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06 Cinnamon
Long traditional useCinnamomum verum
Ceylon cinnamon bark tea is accepted in Europe as a traditional remedy for mild cramping digestive complaints, including bloating and wind, and for mild diarrhea, and laboratory studies show its oil relaxes intestinal muscle. Clinical trials for these uses are still lacking, so it suits an occasional soothing cup rather than a daily supplement. Choose Ceylon rather than cassia, which is rich in coumarin, a compound that has caused liver injury in sensitive people. EMA does not recommend medicinal cinnamon in pregnancy or under 18.
Read the cinnamon monograph →
03 Caution
Using these herbs safely
IBS is common and usually manageable, but some symptoms point to something else and need prompt medical care rather than a herb. See a doctor soon if you notice rectal bleeding or black, tarry stools, unexplained weight loss, anemia, symptoms that wake you at night such as nighttime diarrhea, or fever, or if bowel symptoms begin or change after age 50, or you have a family history of bowel cancer, celiac disease, or inflammatory bowel disease. Severe or worsening abdominal pain, repeated vomiting, or being unable to pass stool or gas needs urgent care. Anxiety and low mood often travel with IBS and deserve care in their own right. Anyone having thoughts of suicide or self-harm should contact emergency services or a crisis line right away; in the US, call or text 988, the Suicide & Crisis Lifeline, and in a life-threatening situation call 911.
A few of these herbs affect how medicines work, so a quick check with a pharmacist is worthwhile. Antacids, H2 blockers, and proton pump inhibitors can dissolve the coating on peppermint oil capsules too early, which means more heartburn and less benefit, and peppermint oil showed some CYP3A4 inhibition in clinical studies, which matters with narrow-margin drugs such as cyclosporine, tacrolimus, and felodipine. Psyllium and slippery elm can slow the absorption of medicines taken at the same time: EMA lists minerals, vitamin B12, digoxin, warfarin, carbamazepine, and lithium for psyllium, advises a gap of half an hour to an hour, and suggests medical supervision for people taking thyroid hormones, diabetes medicines, or opioids, which raise the risk of blockage. Chamomile and lemon balm can add to drowsiness from alcohol and sedatives, chamomile may add to bleeding risk with anticoagulants, and cinnamon may add to the effect of diabetes medicines. Never stop or change a prescribed IBS medicine without talking to your prescriber.
Some herb-specific cautions are worth knowing. Peppermint relaxes the valve at the top of the stomach, so it can cause or worsen heartburn; people with reflux or a hiatal hernia should be cautious and stop if heartburn flares, and EMA contraindicates the capsules with gallstones or other bile-duct problems, liver disease, or achlorhydria. Psyllium must always be taken with plenty of liquid, at least 30 ml per gram, because a dry gel-forming fiber can block the throat, esophagus, or bowel; it is not suitable for people with swallowing problems or narrowing of the gut, and chest pain, vomiting, or trouble swallowing or breathing after a dose needs urgent help. Psyllium can also cause allergic reactions, including asthma and, rarely, anaphylaxis, especially in people who handle the powder often. Chamomile can trigger allergy in people sensitive to daisy-family plants, and cassia cinnamon contains coumarin, which has caused liver injury in sensitive people.
Pregnancy and breastfeeding: EMA does not recommend medicinal peppermint oil, lemon balm, or cinnamon because safety has not been established, medicinal-strength chamomile is best avoided, and slippery elm has no safety data, while psyllium husk may be considered if diet changes have not helped. Children: peppermint oil capsules are not recommended under 8 and peppermint oil should never go near a baby’s face, psyllium as a fiber supplement and lemon balm are not recommended under 12, and medicinal cinnamon is not recommended under 18; ongoing tummy pain in a child needs a pediatric assessment. Product quality matters too: choose enteric-coated peppermint oil capsules, Ceylon rather than cassia cinnamon, and cultivated slippery elm, which United Plant Savers lists as At-Risk. Gut blends often add licorice, whose glycyrrhizin can raise blood pressure and lower potassium, or aloe. Aloe latex is a stimulant laxative that can cause cramping, diarrhea, and potassium loss, has been linked to reports of liver injury, and is not a remedy for IBS.
04 Questions
Frequently Asked Questions
The two best-supported options are enteric-coated peppermint oil, which the American College of Gastroenterology suggests for overall IBS symptoms, and psyllium, a soluble fiber it recommends. Peppermint oil is aimed at cramping, pain, and wind, while psyllium works by bulking and softening stool. Gentler traditional choices such as chamomile tea may soothe a crampy gut. The best fit depends on your main symptoms, and it is worth confirming the diagnosis with a doctor first.
Be cautious. Peppermint relaxes the valve between the esophagus and stomach, so heartburn is its most common side effect, and EMA advises people with heartburn or a hiatal hernia to stop if symptoms flare. Enteric-coated capsules release the oil lower in the gut, which the ACG notes may reduce reflux. Swallow them whole about 30 minutes before meals, and avoid taking them with antacids, H2 blockers, or proton pump inhibitors, which can dissolve the coating early. If reflux is a regular problem, psyllium may be a gentler place to start.
It can help overall symptoms in both, because it is a soluble fiber that forms a gel and gives stool more consistent bulk. The ACG recommends soluble fiber for global IBS symptoms, and in a 275-person trial, 57% of people taking 10 g of psyllium a day reported adequate relief in the first month, versus 35% on placebo. Wheat bran, by contrast, does not seem to help and can make symptoms worse. Stir each gram into at least 30 ml of liquid, keep drinking through the day, and take it half an hour to an hour apart from medicines.
It is usually judged over weeks rather than days. EMA advises taking enteric-coated peppermint oil until symptoms settle, usually within one to two weeks, and allows courses of up to three months for persistent symptoms, and recent trials measured results over four to eight weeks. Psyllium starts to soften stool within 12 to 24 hours, but in IBS trials its benefits were measured over the first month and beyond. If symptoms are no better after a few weeks, or new symptoms appear, check back with your doctor.
Several gentle teas are traditional European remedies for bloating and wind: chamomile for crampy discomfort, lemon balm, Ceylon cinnamon, and peppermint leaf tea, which EMA lists for indigestion and wind. These rest on long use rather than IBS trials, and peppermint tea has much less evidence than the capsules and can worsen heartburn. People allergic to ragweed or daisies should be careful with chamomile, and EMA does not recommend lemon balm or medicinal cinnamon in pregnancy.
05 References
Sources
These references support the claims in this guide. Each herb’s monograph carries its own full source list.
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ACG clinical guideline: management of irritable bowel syndrome
American Journal of Gastroenterology, American College of Gastroenterology (PubMed 33315591), 2021
Basis for the ratings of peppermint oil (suggested for global symptoms) and soluble fiber (recommended), and for celiac and fecal calprotectin testing, the low-FODMAP diet trial, and gut-directed psychotherapy.
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Diagnosis of Irritable Bowel Syndrome
National Institute of Diabetes and Digestive and Kidney Diseases (NIH), 2017
Explains how IBS is diagnosed and lists symptoms that suggest another condition, including anemia, rectal bleeding, black stools, weight loss, and a family history of celiac disease, colon cancer, or inflammatory bowel disease.
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Peppermint oil
National Center for Complementary and Integrative Health (NIH), 2025
Federal summary that enteric-coated peppermint oil may improve IBS symptoms, with heartburn as the main side effect and a warning against menthol near infants’ faces.
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European Union herbal monograph on Mentha x piperita L., aetheroleum (Revision 1)
European Medicines Agency (EMA/HMPC/522410/2013), 2020
Supports well-established use of enteric-coated capsules for cramping, wind, and pain in IBS, timing before meals, the acid-reducer caution, contraindications, and the age limits.
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Systematic review and meta-analysis: efficacy of peppermint oil in irritable bowel syndrome
Alimentary Pharmacology and Therapeutics (PubMed 35942669), 2022
The 10-trial, 1,030-patient review showing benefit over placebo for global symptoms and abdominal pain, with more side effects and very low quality evidence.
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The effect of fiber supplementation on irritable bowel syndrome: a systematic review and meta-analysis
American Journal of Gastroenterology (PubMed 25070054), 2014
The 14-trial, 906-patient review finding benefit from soluble fiber such as psyllium but not from bran.
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Soluble or insoluble fibre in irritable bowel syndrome in primary care? Randomised placebo controlled trial
BMJ (PubMed 19713235), 2009
The 275-patient trial in which 10 g of psyllium a day gave adequate relief to 57% versus 35% on placebo in the first month, while bran helped less.
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Community herbal monograph on Plantago ovata Forssk., seminis tegumentum
European Medicines Agency (EMA/HMPC/199774/2012), 2013
Supports psyllium husk as a fiber supplement in constipation-predominant IBS, the 30 ml of liquid per gram rule, choking and blockage warnings, spacing from medicines, and pregnancy and age guidance.