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Digestive Health

Gut Health & IBS

Reviewed by the Nimbera editorial team · Last updated May 2026

Irritable bowel syndrome (IBS) is a functional gut disorder affecting 10-15% of adults, characterized by abdominal pain, bloating, and altered bowel habits (constipation, diarrhea, or mixed). It is diagnosed by symptoms after ruling out structural disease. The gut-brain axis plays a central role.

When to see a doctor

See a doctor if symptoms are new or recently changed, if you notice blood in stool, unexplained weight loss, fever, anemia, or symptoms that wake you from sleep. These may indicate inflammatory bowel disease, celiac disease, or colorectal cancer. IBS diagnosis requires ruling out other causes first.

Natural remedies · 4

Tap any remedy for the full how-to and citation.

How we rate evidence▾

Strong - Multiple randomised controlled trials or systematic reviews with consistent positive outcomes.

Moderate - At least one RCT or several high-quality observational studies with plausible mechanisms.

Limited - Small trials, animal studies, or traditional use with limited human clinical evidence.

Sources link directly to PubMed, Cochrane Reviews, or NCCIH.

Peppermint Oil (Enteric-Coated)

ingestible
Khanna R et al. 2014 Journal of Clinical Gastroenterology (PMID 24100754) - meta-analysis of 9 RCTs found enteric-coated peppermint oil significantly reduced global IBS symptoms (RR 2.23, NNT = 3) and abdominal pain (RR 2.14) compared to placebo, with a favorable safety profile and low discontinuation rate.
$20-40/month

Low-FODMAP Diet

lifestyle
Halmos EP et al. 2014 Gastroenterology (PMID 24076059) - crossover RCT found the low-FODMAP diet produced significantly lower overall GI symptom scores vs typical diet (22.8 vs 44.9 mm visual analog scale, P < .001) in IBS patients; 70% of participants responded to the diet intervention.
$0-15 for the app; standard grocery budget

Psyllium Husk

ingestible
Bijkerk CJ et al. 2009 BMJ (PMID 19713235) - RCT of 275 IBS patients found psyllium supplementation (10 g/day) reduced symptom severity score by 90 points vs 49 points for placebo (p = 0.03) after 3 months; effect was especially pronounced in constipation-predominant IBS.
$5-15/month

Lactobacillus plantarum 299v

ingestible
Ducrothe P et al. 2012 World Journal of Gastroenterology (PMID 22912552) - 4-week RCT found Lactobacillus plantarum 299v (10 billion CFU/day) produced 'excellent' or 'good' symptom relief in 78.1% of IBS patients vs 8.1% in the placebo group (p < 0.05); abdominal pain scores improved significantly.
$20-35/month

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Remedy information is compiled from primary clinical sources including PubMed, the Cochrane Library, and the National Center for Complementary and Integrative Health (NCCIH). Evidence ratings reflect published human trial data at time of writing. This content is for informational purposes only and is not a substitute for professional medical advice. Read our full disclaimer.