For quick relief from a gassy stomach, an anti-gas product containing simethicone is the most widely available option at any pharmacy. But depending on what’s causing your gas, enzyme supplements, dietary changes, or herbal remedies may work better as longer-term solutions. The right approach depends on whether your gas is occasional or a recurring pattern.
Simethicone for Fast Relief
Simethicone is the active ingredient in products like Gas-X and Mylanta Gas. It works as a surfactant, meaning it reduces the surface tension of gas bubbles trapped in your digestive tract. This causes smaller bubbles to merge into larger ones that are easier for your body to expel through burping or passing gas. It doesn’t stop gas from forming, but it helps move out gas that’s already there.
The standard adult dose is 40 to 125 mg taken up to four times a day, typically after meals and at bedtime, with a maximum of 500 mg per day. Because simethicone isn’t absorbed into your bloodstream, it has very few side effects and is generally considered safe for most people. It’s a good first-line option when you need relief now, but it won’t prevent the problem from coming back.
What About Activated Charcoal?
Activated charcoal capsules are frequently marketed for gas relief, but the evidence behind them is weak. Early studies looked promising, but more recent and better-designed trials have failed to show a clear benefit. A review from the American Academy of Family Physicians found inconsistent evidence for both activated charcoal and simethicone and did not recommend either for managing flatulence specifically. Simethicone still has the edge for immediate comfort, but if you’re dealing with chronic gas, you’ll likely need to look beyond either of these options.
Enzyme Supplements for Specific Triggers
If certain foods reliably give you gas, an enzyme supplement taken with your meal can prevent the problem at its source.
Alpha-galactosidase (sold as Beano) breaks down complex sugars found in beans, lentils, broccoli, cabbage, and whole grains. Your small intestine can’t absorb these sugars on its own, so they travel to your colon where bacteria ferment them and produce gas. Taking alpha-galactosidase with your first bite gives your body the enzyme it needs to break those sugars down before bacteria get to them.
Lactase (sold as Lactaid) does the same thing for the milk sugar lactose. If dairy consistently causes bloating, cramping, or gas, you’re likely not producing enough lactase on your own. Take lactase supplements with your first bite of dairy food for them to work properly. Timing matters here: taking them after you’ve already eaten won’t help much because the lactose will have already reached your colon.
Peppermint Oil for Bloating and Trapped Gas
Enteric-coated peppermint oil capsules relax the smooth muscle lining your intestines. The active compound, menthol, blocks calcium channels in the muscle cells of your gut wall, which prevents the kind of cramping and tightening that can trap gas and make bloating feel worse.
The clinical evidence is strongest in people with irritable bowel syndrome, but the mechanism applies to general bloating too. In one trial, 79% of people taking peppermint oil reported improvement in flatulence, compared to just 22% on placebo. Another study found that bloating and fullness scores dropped significantly with peppermint oil while staying flat in the placebo group. Look for enteric-coated capsules, which dissolve in your intestines rather than your stomach, reducing the chance of heartburn.
Ginger Speeds Up Digestion
Ginger helps with gas that comes from food sitting too long in your stomach. It acts as a prokinetic, meaning it stimulates the contractions that push food through your digestive tract. In a controlled study, gastric emptying was about 24% faster after ginger compared to placebo, with the stomach’s half-emptying time dropping from roughly 16 minutes to 12 minutes.
This is most useful if your gas comes with a heavy, full feeling after eating. When food moves through your stomach faster, there’s less time for gas to build up. You can get this effect from fresh ginger tea (sliced ginger steeped in hot water), ginger chews, or capsules. There’s no firmly established dose, but most studies use around 1 to 1.5 grams of ginger powder or its equivalent.
Dietary Changes That Reduce Gas Long-Term
If gas is a daily problem, what you eat matters more than any supplement. A low-FODMAP diet, which temporarily removes certain fermentable carbohydrates, reduces digestive symptoms in up to 86% of people who try it. FODMAPs are short-chain carbohydrates found in foods like onions, garlic, wheat, apples, and milk that ferment rapidly in your colon. The diet works in three phases: you eliminate high-FODMAP foods for two to six weeks, then reintroduce them one category at a time, then settle into a personalized long-term plan based on what you tolerate.
Even without a full FODMAP elimination, simple adjustments can make a noticeable difference. Eating more slowly reduces the amount of air you swallow. Cooking vegetables like broccoli and cauliflower breaks down some of their gas-producing compounds. Soaking dried beans overnight and discarding the soaking water removes a portion of the indigestible sugars that cause flatulence. Cutting back on carbonated drinks and sugar alcohols (found in many “sugar-free” products) eliminates two of the most common gas triggers people overlook.
Do Probiotics Help With Gas?
The short answer is: some strains might, but most don’t have strong evidence for gas specifically. A large systematic review of probiotic strains tested in people with IBS found that several well-known strains, including Lactobacillus plantarum 299v, Saccharomyces cerevisiae, Lactobacillus gasseri, and Lactobacillus casei Shirota, did not significantly reduce bloating or flatulence. Even Bifidobacterium longum 35624, one of the most studied probiotic strains for gut health, showed insufficient effects on gas and bloating.
One exception was Bacillus coagulans (strain Unique IS2), which reduced the severity of bloating, flatulence, and several other digestive symptoms across two studies. But the research is still limited, and probiotic effects tend to be very strain-specific. Picking a random probiotic off the shelf is unlikely to target gas. If you want to try one, look for the specific strain name on the label, not just the species.
Signs Your Gas Needs Medical Attention
Most gas is harmless, even when it’s uncomfortable or embarrassing. But certain patterns point to something that needs a closer look. Talk to a doctor if your gas comes with unexplained weight loss, persistent abdominal pain, ongoing diarrhea or constipation, or if your symptoms change suddenly after being stable. These can signal food intolerances, small intestinal bacterial overgrowth, celiac disease, or other conditions where treating the underlying cause is the only way to get lasting relief.