What Are the Best Supplements for Bloating? An Evidence Based Guide
Bloating is one of the most common digestive complaints, affecting an estimated 10 to 30% of adults, with even higher rates among people living with irritable bowel syndrome (IBS). It can leave you feeling overly full, uncomfortable, and frustrated, especially when it happens regularly after meals. (PMC)
The good news is that several supplements have been shown to help reduce bloating. The catch? The best supplement depends on what's causing your bloating.
For example:
- Bloating after dairy may respond to lactase enzymes
- Bloating related to IBS may improve with peppermint oil or certain probiotics
- Constipation related bloating may respond to magnesium or psyllium
- Slow digestion may improve with ginger
Choosing the wrong supplement may do very little, while choosing the right one can make a meaningful difference.
What Causes Bloating?
Bloating isn't a diagnosis. It's a symptom.
Common causes include:
- Eating too quickly
- Swallowing excess air
- Constipation
- Irritable bowel syndrome (IBS)
- Food intolerances (lactose, fructose)
- High FODMAP foods
- Changes in the gut microbiome
- Hormonal fluctuations
- Small intestinal bacterial overgrowth (SIBO)
- Certain medications
Understanding the cause helps determine which supplement is most appropriate.
1. Peppermint Oil
Best for: IBS related bloating, abdominal discomfort, gas
Peppermint oil is one of the most studied natural therapies for digestive symptoms.
Its active ingredient, menthol, relaxes the smooth muscles of the digestive tract through calcium channel blockade. This may reduce intestinal spasms, improve gas transit, and relieve the sensation of bloating.
A landmark BMJ meta analysis found that peppermint oil significantly improved overall IBS symptoms compared with placebo. More recent clinical guidelines continue to recommend enteric coated peppermint oil as an option for IBS symptom management. (BMJ)
Typical dose
180 to 225 mg of enteric coated peppermint oil, two to three times daily before meals.
Possible side effects
Peppermint oil may worsen heartburn or acid reflux. Enteric coated capsules are generally preferred because they dissolve in the intestines rather than the stomach.
2. Probiotics
Best for: IBS, post antibiotic bloating, microbiome imbalance
Probiotics are among the most popular digestive supplements, but not all probiotics work the same way.
Research shows that benefits are strain specific, meaning one probiotic cannot be assumed to work like another.
Multiple systematic reviews have concluded that certain probiotic strains can reduce bloating and abdominal distension in IBS, although results vary considerably between studies. (PubMed)
Some of the most studied strains include:
- Bifidobacterium infantis
- Bifidobacterium coagulans
- Lactobacillus plantarum
Improvement often requires 4 to 8 weeks of consistent use.
Keep in mind
Some people experience temporary increases in gas during the first week as the gut microbiome adapts.
3. Digestive Enzymes
Best for: Food triggered bloating
Digestive enzymes help break down carbohydrates, proteins and fats before they reach the large intestine, where bacteria ferment undigested food and produce gas.
The most helpful enzyme depends on the trigger:
- Lactase for dairy
- Alpha galactosidase for beans and cruciferous vegetables
- Broad spectrum enzyme blends for individuals with pancreatic insufficiency or certain digestive disorders
Digestive enzymes are most effective when taken with the first bite of food.
Research supports targeted enzyme supplementation in people with documented enzyme deficiencies or food intolerances, rather than routine use for everyone. (Healthline)
4. Ginger
Best for: Slow digestion, fullness after meals
Ginger has been used for digestive complaints for centuries.
Modern research suggests it may help by:
- Speeding gastric emptying
- Improving stomach motility
- Reducing nausea
- Supporting normal digestive function
One clinical trial found that ginger significantly accelerated gastric emptying in people with functional dyspepsia, which may reduce bloating after meals. (Healthline)
Typical dose
500 to 1000 mg daily, or standardized ginger extract.
5. Magnesium
Best for: Constipation related bloating
If constipation is contributing to bloating, magnesium may help by drawing water into the intestines and supporting bowel movements.
Forms commonly used include:
- Magnesium citrate
- Magnesium oxide
These forms are different from magnesium glycinate, which is typically chosen for sleep or relaxation rather than constipation.
Magnesium should not be used for chronic constipation without discussing persistent symptoms with a healthcare professional.
6. Psyllium Husk
Best for: Mild constipation
Psyllium is a soluble fiber that absorbs water and helps normalize bowel movements.
Interestingly, psyllium can help relieve constipation related bloating, but introducing too much fiber too quickly can temporarily increase gas.
A major systematic review found soluble fiber, particularly psyllium, beneficial for IBS symptoms overall. (BMJ)
Tips
- Start with a small dose.
- Increase gradually.
- Drink plenty of water.
7. L-Glutamine
Best for: Selected individuals with IBS or intestinal barrier dysfunction
L-glutamine is an amino acid that serves as a fuel source for intestinal cells.
Emerging research suggests it may benefit certain people with IBS, particularly those with increased intestinal permeability, but evidence remains limited compared with peppermint oil or probiotics.
It should not be considered a first line supplement for bloating alone.
8. Activated Charcoal
Best for: Occasional gas (mixed evidence)
Activated charcoal is often marketed for bloating.
However, scientific evidence is inconsistent.
Some small studies suggest modest reductions in gas production, while others find little benefit. Because of limited evidence, it is generally not considered a first choice for chronic bloating.
Activated charcoal may also interfere with the absorption of medications and supplements if taken too close together.
Which Supplement Is Best?
| Cause of bloating | Supplement with the strongest evidence |
|---|---|
| IBS | Peppermint oil, selected probiotics |
| Dairy | Lactase |
| Beans and vegetables | Alpha galactosidase |
| Constipation | Magnesium citrate, psyllium |
| Slow digestion | Ginger |
| Post antibiotics | Selected probiotics |
Supplements That May Not Help Everyone
Many products marketed for bloating lack strong evidence.
These include:
- Apple cider vinegar capsules
- Generic "gut cleanse" products
- Detox teas
- Random probiotic blends
- Colon cleanses
Choosing supplements based on symptoms and the underlying cause is generally far more effective than trying multiple products at random.
Lifestyle Changes That Often Work Better Than Supplements
Sometimes the best treatment isn't a supplement at all.
Evidence supports:
- Eating more slowly
- Limiting carbonated beverages
- Staying hydrated
- Walking after meals
- Identifying food triggers
- Managing constipation
- Trying a low FODMAP diet under professional guidance for IBS
Supplements work best alongside these lifestyle strategies.
When Should You See a Healthcare Professional?
Bloating should always be evaluated if it is:
- Persistent or worsening
- Associated with weight loss
- Accompanied by blood in the stool
- Associated with severe abdominal pain
- New after age 50
- Accompanied by vomiting or difficulty swallowing
Although bloating is usually harmless, these symptoms warrant medical evaluation.
Frequently Asked Questions
Are probiotics the best supplement for bloating?
Not necessarily. They can help some people, particularly those with IBS, but effectiveness depends on the specific strain and the underlying cause of bloating. (PubMed)
What works fastest?
For occasional gas, peppermint oil or targeted digestive enzymes may provide relatively quick relief when matched to the cause.
Can magnesium help bloating?
Yes, if constipation is contributing to your symptoms.
Can supplements cure bloating?
No. Supplements help manage symptoms, but identifying and addressing the underlying cause is the most effective long term strategy.
The Bottom Line
There is no single best supplement for bloating.
The right choice depends on why you're bloated.
Current evidence suggests that peppermint oil, selected probiotic strains, digestive enzymes, ginger, magnesium (for constipation), and psyllium have the strongest scientific support for specific situations. (BMJ)
If bloating is frequent, severe, or associated with other concerning symptoms, consult a healthcare professional to identify the underlying cause rather than relying on supplements alone.
References
- Ford AC, Talley NJ, Spiegel BMR, et al. Effect of fibre, antispasmodics, and peppermint oil in the treatment of irritable bowel syndrome: Systematic review and meta-analysis. BMJ. 2008;337:a2313. (BMJ)
- Didari T, Mozaffari S, Nikfar S, Abdollahi M. Effectiveness of probiotics in irritable bowel syndrome: Updated systematic review and meta-analysis. (PubMed)
- Hungin APS, Mulligan C, Pot B, et al. Systematic review: Probiotics in the management of lower gastrointestinal symptoms in clinical practice. Aliment Pharmacol Ther. 2013. (PMC)
- Black CJ, Ford AC. Efficacy of Probiotics in Irritable Bowel Syndrome: Systematic Review and Meta-analysis. Gastroenterology. 2023. (PubMed)
- Lacy BE, Cangemi D, Vazquez-Roque M. Management of Chronic Abdominal Distension and Bloating. Clinical Gastroenterology and Hepatology. 2020. (PubMed)
- Hu ML, Rayner CK, Wu KL, et al. Effect of ginger on gastric emptying and symptoms of functional dyspepsia. (Referenced in current reviews.) (Healthline)
- Moayyedi P, Quigley EMM, et al. IBS management guidelines supporting soluble fiber and peppermint oil. (BMJ)
- Healthline Medical Review. Supplements for Bloating. Used only as a secondary summary source; recommendations above are based primarily on peer reviewed research. (Healthline)