Comparison
IBgard vs Iberogast: which one for cramps, bloating and nausea?
People compare these two because both are herbal, both come recommended by pharmacists, and both are taken for a gut that hurts. They are aimed at different ends of it. IBgard is peppermint oil, coated to reach the small intestine, with a trial in IBS. Iberogast is a six-plant liquid tested in functional dyspepsia — the fullness, early satiety and queasiness that sit under the ribs. Choosing between them is mostly a matter of where the trouble is.
Quick answer
IBgard for the lower gut: cramping, urgency and pain with a disturbed bowel habit, the IBS picture. It has a placebo-controlled trial on the product itself and a guideline behind its ingredient.
Iberogast for the upper gut: fullness after small meals, early satiety, queasiness. Its trials are in functional dyspepsia, and the six-herb version sold in the US has a 2024 meta-analysis of four trials behind it. The liver-injury history belongs to the older nine-herb formula, which contains greater celandine; the US Dual Action product does not.
The short answer
IBgard Digestive Gut Health Capsules
$0.57 a day · 4.6★ from 895 ratings at Walmart
Ultra-purified peppermint oil in a triple-coated capsule built to release in the small intestine. The IBSREST trial gave it to 72 adults with IBS for four weeks: total symptom score fell 40% against 24% on placebo, with separation inside 24 hours. Behind the ingredient sits a meta-analysis of 12 randomized trials in 835 patients and the 2021 ACG guideline’s recommendation of peppermint oil for global IBS symptoms.
- Cramping or pain that eases after a bowel movement
- Urgency, or bloating that comes with bowel changes
- You can take it 30–90 minutes before meals
Iberogast Liquid Drops
$0.72 a day · 4.1★ from 421 ratings at Walmart
Twenty drops of a six-plant liquid in water, three times a day before or with meals. The six-herb formula (STW 5-II) has a 2024 patient-data meta-analysis of four randomized trials in 613 people with functional dyspepsia: symptom scores improved against placebo at four and eight weeks, with adverse events no different from placebo. It is 31% alcohol by volume and bitter.
- Feeling full after little food, or sick after eating
- Slow, heavy digestion rather than cramps
- You can tolerate a bitter drop-dose three times a day
Not sure which of the two fits you? The quiz asks about your symptoms before it names one.
The Iberogast liver history, plainly. The classic nine-herb Iberogast contains greater celandine (Chelidonium majus), a plant with dozens of documented cases of liver injury. Germany’s medicines regulator knew of more than 50 liver-damage reports and asked Bayer to warn users from 2008. Bayer added the warning in 2018 after a patient died following a liver transplant, and the label now excludes people with liver disease and says to stop at any sign of liver trouble. In October 2020 Bayer launched a six-herb version without celandine. The product in our catalog is the US Iberogast Dual Action, whose listed ingredients are six herbs, water and ethanol, with no celandine. If you have any liver condition, or you find the nine-herb formula abroad, treat that warning as yours.
Side by side
✓ marks the product with the advantage on that row. Rows with no mark are a genuine tie or a matter of preference.
Where they differ
1. They treat different things
Peppermint oil relaxes the smooth muscle of the gut wall, which is why it eases cramping and urgency; IBgard’s coating exists to get the oil past the stomach to where that matters. Iberogast’s plants are a mix of bitter and carminative herbs whose trials are all in functional dyspepsia — the stomach that feels full, slow or queasy. If your symptoms are under the ribs after eating, the IBS evidence does not apply to you; if they are lower down and tied to bowel movements, the dyspepsia evidence does not.
2. The evidence, and where it sits
IBgard has the stronger position: a placebo-controlled trial of the exact capsule, a 12-trial meta-analysis of its ingredient, and a guideline recommendation. The recommendation is graded weak with low certainty, which is the honest rating for a small-trial field, but it is more than most gut supplements can point to. Iberogast’s six-herb formula has four randomized trials pooled in 2024 with symptom-score improvements at four and eight weeks; a solid record for dyspepsia, but not for IBS.
3. The celandine question
Everything in the warning box above concerns the nine-herb formula. The six-herb version was created to remove it, and the US Dual Action product lists no celandine. That does not make Iberogast risk-free — it is a multi-herb extract in 31% alcohol, and its label excludes pregnancy and tells anyone on medication to check first — but the specific liver signal attaches to an ingredient the US product does not contain.
4. Practicalities
IBgard is a capsule you take before meals; the directions matter, and reviewers who ignore them tend to be the ones who say it did nothing. Iberogast is bitter drops three times a day in a drink, which is what most of its low ratings are about. IBgard costs $0.57 a day, Iberogast $0.72.
Where they are the same
- Both contain peppermint, so both can cause heartburn in people prone to it; IBgard’s coating is designed to reduce that.
- Both are for functional symptoms — the ones left after a doctor has ruled out anything structural. Neither treats the causes of pain that need investigating.
- Both need the directions followed and a few weeks to judge.
- Neither has been tested against the other.
Read the full research
Common questions
Is IBgard or Iberogast better for IBS?
IBgard. Its four-week trial in 72 adults with IBS found a 40% drop in total symptom score against 24% on placebo, peppermint oil has a meta-analysis of 12 trials in 835 patients behind it, and the 2021 American College of Gastroenterology guideline recommends peppermint oil for overall IBS symptoms. Iberogast’s trials are in functional dyspepsia, an upper-gut condition, not IBS.
Is Iberogast safe for the liver?
The original nine-herb Iberogast contains greater celandine, and that ingredient has been linked to rare cases of liver injury; Germany’s regulator knew of more than 50 cases, and in 2018 Bayer added a liver warning after a death following a liver transplant. In October 2020 Bayer introduced a six-herb version without celandine, and the product sold in the US as Iberogast Dual Action lists six herbs with no celandine. Anyone with liver disease should still check with a pharmacist, and stop at any sign of liver trouble.
Can I take IBgard and Iberogast together?
No trial has tested the pair. They target different parts of the gut, so there is no obvious conflict, but both contain peppermint and Iberogast is 31% alcohol by volume. Ask a pharmacist, and do not start both at once, or you will not know which one helped.
Does IBgard cause heartburn?
Plain peppermint oil can, because it relaxes the valve at the top of the stomach. IBgard’s triple-layer coating is designed to carry the oil past the stomach, and the guideline notes that coated formulations may reduce that side effect. It is still worth taking as directed, 30 to 90 minutes before meals.
What is the difference between Iberogast and Iberogast Dual Action?
The classic Iberogast has nine herbs including greater celandine; Dual Action (also sold as Iberogast Advance) has six: bitter candytuft, chamomile, peppermint, caraway, licorice root and lemon balm. The six-herb formula has its own trials in functional dyspepsia, a 2024 patient-data meta-analysis of four trials in 613 patients.
In one line: IBgard Digestive Gut Health Capsules — for cramps, urgency and IBS-type pain.
Speak to a doctor first if you are pregnant, breastfeeding, trying to conceive, immune-suppressed, or taking prescription medication — and before starting anything if you have blood in your stool, unexplained weight loss, persistent vomiting, or pain severe enough to wake you at night. Those are signs to get looked at, not to try a supplement.
Not sure which end of the gut is the problem?
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Where these numbers come from
- Cash BD et al. IBSREST: peppermint oil (IBgard) vs placebo in 72 adults with IBS. Dig Dis Sci 2016 — pmc.ncbi.nlm.nih.gov/articles/PMC4965625
- Alammar N et al. Peppermint oil in IBS: meta-analysis of 12 trials, 835 patients. BMC Complement Altern Med 2019 — pubmed.ncbi.nlm.nih.gov/30654773
- Lacy BE et al. ACG Clinical Guideline: Management of Irritable Bowel Syndrome. Am J Gastroenterol 2021 (peppermint oil recommendation) — journals.lww.com/ajg/fulltext/2021/01000/acg_clinical_guidelin
- IBgard price and rating, 4.6 from 895 — www.amazon.com/dp/B071DR7YBC?tag=supplegut-20
- Andresen V et al. STW 5-II in functional dyspepsia: patient-data meta-analysis of four trials, 613 patients. Digestion 2024 — pubmed.ncbi.nlm.nih.gov/38246134
- Iberogast Dual Action: six herbs, 31% ethanol, directions, warnings — www.iherb.com/pr/iberogast-dual-action-digestive-relief-0-67-f
- Bayer adds liver warning to Iberogast after death linked to the drops, 2018 — www.physiciansweekly.com/bayer-adds-label-warning
- Bayer investigated over Iberogast liver failures; more than 50 cases known to BfArM — www.apmhealtheurope.com/freestory/0/64897/bayer-investigated-o
- Iberogast-induced acute liver injury, case report with literature summary. Gastro Hep Advances 2022 — pmc.ncbi.nlm.nih.gov/articles/PMC11308012
- Dutch pharmacovigilance signal: liver toxicity of Iberogast; celandine-free variant introduced October 2020 — web.archive.org/web/20250117213652/https://www.lareb.nl/media/
Prices and star ratings are point-in-time snapshots and move around. Where a figure could not be confirmed from a manufacturer label or retailer listing, this page says so rather than estimating.