Most healthy adults pass gas at least 14 times a day, so the goal isn’t to stop completely. It’s to bring the frequency and smell down to a level that doesn’t disrupt your life. The two main sources of intestinal gas are swallowed air and bacterial fermentation of undigested carbohydrates in your large intestine. Tackling both gives you the biggest improvement.
Slow Down How You Eat and Drink
Every time you eat, drink, or swallow, a small amount of air enters your digestive tract. Most of it comes back up as a belch, but whatever reaches your intestines has only one exit. Certain habits dramatically increase the amount of air you swallow:
- Eating too fast or talking while eating
- Drinking through straws
- Chewing gum or sucking on hard candy
- Carbonated drinks like soda and sparkling water
- Smoking
The fix is straightforward. Chew each bite thoroughly and swallow it before taking the next one. Sip from a glass instead of a straw. Save conversations for after the meal rather than between bites. These changes alone can noticeably reduce gas within a day or two because you’re cutting off one of the two supply lines entirely.
Identify Your Worst Food Triggers
Bacteria in your large intestine feed on carbohydrates that your small intestine couldn’t fully absorb. The byproduct is gas. Some foods deliver far more of these fermentable carbohydrates than others. The biggest culprits fall into a group called FODMAPs, short-chain sugars that the small intestine absorbs poorly:
- Beans and lentils
- Dairy (milk, yogurt, ice cream) if you’re lactose intolerant
- Wheat-based products like bread, cereal, and crackers
- Certain vegetables: onions, garlic, artichokes, asparagus
- Certain fruits: apples, pears, cherries, peaches
You don’t need to eliminate all of these permanently. A better approach is to cut them out for two to three weeks, then reintroduce one category at a time. This helps you pinpoint which specific foods cause problems for your gut, since everyone’s microbiome responds differently. Many people find they can tolerate small portions of a trigger food but not large ones.
Add Fiber Gradually
Fiber is healthy, but adding a lot of it suddenly is one of the fastest ways to increase gas. If you’ve recently started eating more whole grains, vegetables, or a fiber supplement, your gut bacteria are getting a sudden feast of fermentable material. The solution isn’t to avoid fiber. It’s to increase your intake slowly over a few weeks so your microbiome can adjust. Drinking more water alongside higher fiber intake also helps move things through your system more efficiently.
Over-the-Counter Options That Help
Two types of products target gas through completely different mechanisms, so it helps to understand which one matches your situation.
Gas-Relief Tablets (Simethicone)
Simethicone works by breaking up gas bubbles already trapped in your digestive tract, making them easier to pass. It doesn’t prevent gas from forming. It’s most useful when you’re already feeling bloated or pressured. The typical approach is to take it after meals and at bedtime.
Enzyme Supplements
Products containing alpha-galactosidase (the enzyme in Beano) break down the specific sugars in beans, legumes, cereals, and vegetables before they reach your colon. If bacteria never get those sugars, they can’t produce the gas. A randomized, placebo-controlled trial found that this enzyme significantly reduced gas-related symptoms and the number of severe bloating episodes. You take it with the first bite of a trigger food, not after. Lactase supplements work the same way but specifically target the sugar in dairy.
Peppermint Oil for Trapped Gas
Peppermint oil relaxes the smooth muscle lining your intestines by blocking calcium channels in those muscle cells. This makes it easier for trapped gas to move through and pass rather than building up and causing cramping or distension. In clinical trials, people taking peppermint oil capsules saw flatulence scores drop by nearly half, while placebo groups showed almost no change. One study found that 79% of participants using peppermint oil reported improvement in flatulence compared to just 22% on placebo.
Enteric-coated capsules work best because they dissolve in your intestines rather than your stomach, which avoids heartburn. Taking them 30 to 60 minutes before meals gives them time to reach the lower digestive tract.
What Probiotics Can and Can’t Do
Probiotics get a lot of attention for gut health, but the evidence for gas specifically is mixed. An international consensus review found moderate evidence that certain probiotic strains reduce bloating and distension in people with irritable bowel syndrome. However, the same review concluded that probiotics tested so far do not reduce flatus itself. In other words, you might feel less bloated and uncomfortable, but you probably won’t pass gas fewer times per day. If bloating is your main complaint alongside gas, a probiotic containing Bifidobacterium strains may be worth trying for a few weeks to see if you respond.
When Gas Signals Something Deeper
Excessive gas that doesn’t improve with dietary changes can sometimes point to an underlying condition. Small intestinal bacterial overgrowth (SIBO) occurs when bacteria that normally live in your large intestine colonize your small intestine, fermenting food much earlier in the digestive process. It’s diagnosed with a breath test that measures hydrogen and methane levels after you drink a sugar solution. Lactose intolerance, celiac disease, and other malabsorption conditions can also drive persistent gas because they leave more undigested carbohydrates for bacteria to ferment.
Certain symptoms alongside gas warrant medical attention: unexplained weight loss, blood in your stool, oily or unusually foul-smelling stools, persistent abdominal pain, chronic diarrhea or constipation, or fever. These patterns suggest something beyond normal digestion is going on.
A Practical Starting Plan
Rather than changing everything at once, layer these strategies over a few weeks. Start by slowing down at meals and cutting carbonated drinks and gum. That handles the swallowed-air side. Next, keep a simple food diary for a week, noting what you eat and when gas is worst. Use that to identify your top two or three trigger foods and reduce them. If you’re still struggling after those changes, try an enzyme supplement with problem meals or enteric-coated peppermint oil before eating. Most people who work through these steps systematically notice a real difference within two to four weeks.