How to Get Rid of Gas After Eating Chili

Chili is a perfect storm for intestinal gas. Beans, onions, garlic, and spices each contribute their own fermentable compounds, and your gut bacteria go to work on all of them at once. The result can range from mild bloating to hours of uncomfortable pressure and flatulence. Fortunately, you can tackle the problem from multiple angles, starting well before the pot hits the stove and continuing after you’ve eaten your fill.

Why Chili Is Especially Gassy

Beans are the biggest culprit. They contain sugars called oligosaccharides, particularly raffinose and stachyose, that your small intestine simply cannot break down. Instead, these sugars travel intact to the large intestine, where resident bacteria ferment them. The byproducts of that fermentation are hydrogen, carbon dioxide, methane, and sometimes sulfur-containing gases, which account for the smell.¹

But beans aren’t the only offender in a bowl of chili. Onions and garlic belong to a category of foods high in fermentable short-chain carbohydrates. These compounds follow essentially the same route: they resist digestion in the small intestine, pass into the colon, and feed bacteria that produce gas. When those fermentable carbohydrates reach high enough levels, they can cause flatulence, bloating, and abdominal pain.² Throw in the beans and you’ve doubled or tripled the amount of fermentable material arriving in your colon at once. That’s why chili tends to be worse than a dish with just one of these ingredients.

Prepare Your Beans to Produce Less Gas

If you’re cooking chili from dried beans, how you handle them before they ever hit the pot matters. Soaking beans overnight and then discarding the soak water is the single most accessible technique. One study found that soaking and discarding the water reduced raffinose by about 25% and stachyose by a similar amount, while a related compound called verbascose dropped by roughly 42%.³ Research across multiple legume types has confirmed that soaking is broadly effective at reducing these gas-producing sugars, though the exact percentage varies by species.⁴ Chickpeas, for instance, lost up to 40% of their oligosaccharides during soaking, while lentils shed closer to 10%.⁵

The key step that many home cooks skip is dumping the soak water. Those oligosaccharides leach out into the liquid, and if you cook the beans in that same water, you’re pouring them right back in. Rinse the beans and start with fresh water for cooking.

Pressure cooking takes this even further. In one study of cowpeas, pressure cooking reduced raffinose by about 74% and stachyose by about 81%, outperforming both standard boiling and other preparation methods.⁶ If you own a pressure cooker or an electric multi-cooker, using it for your chili beans is one of the most effective things you can do. The combination of soaking, discarding the water, and then pressure cooking should remove the majority of the problematic sugars.

Canned beans have already been soaked and cooked at high heat during processing, and the canning liquid contains dissolved oligosaccharides. Draining and rinsing canned beans before adding them to chili won’t match the reductions you’d get from a full soak-and-pressure-cook routine, but it’s better than dumping them in liquid and all.

Watch When You Add the Tomatoes

A detail that trips up a lot of chili cooks: acidic ingredients like tomatoes and vinegar can actually slow down bean cooking. Acids alter the structure of starches in beans, making the cells resistant to absorbing water and softening.⁷ If you add tomatoes too early, you may end up with beans that are still firm after hours of simmering, and undercooked beans are harder to digest. The fix is simple: cook your beans until they’re fully tender before adding tomatoes, tomato paste, or vinegar. This also gives you a longer window of high-heat cooking that helps break down more oligosaccharides before the acid goes in.

Get Moving After the Meal

Once you’ve eaten the chili and the gas production has started, your body position makes a real difference in how quickly that gas moves through and out. A study that directly compared upright and lying-down positions found that gas transit was dramatically faster when participants were upright. After one hour, people lying flat retained an average of about 146 milliliters of gas, while those in the upright position retained only about 13 milliliters.⁸ If you’re tempted to collapse on the couch after a big bowl of chili, this is worth knowing: staying upright helps gravity and normal gut contractions move gas along rather than letting it pool and cause bloating.

Light exercise takes this further. Research on healthy volunteers found that mild physical activity reduced gas retention compared to rest, and the abdominal distension that comes with trapped gas was measurably smaller during exercise.⁹ A clinical trial focusing on people with bloating found that a short bout of post-meal physical activity helped facilitate gas transit and evacuation, likely because the combination of being upright and compressing the abdomen with movement creates pressure that nudges gas through the intestines.¹⁰ You don’t need a full workout. A 10- to 15-minute walk after eating chili is one of the simplest and most effective things you can do.

Over-the-Counter Options

Several products target gas from different angles, and understanding which one does what helps you pick the right tool.

• Alpha-galactosidase (Beano): This enzyme does exactly what your small intestine can’t: it breaks down the oligosaccharides in beans before they reach the bacteria in your colon. A controlled trial found that alpha-galactosidase significantly reduced both the amount of hydrogen produced in the gut and the severity of flatulence after a meal rich in fermentable carbohydrates.¹¹ The catch is timing: you need to take it with your first bite of chili, not after the gas has already started. It works on the food in your stomach, not on gas that’s already been produced.
• Simethicone (Gas-X): This doesn’t prevent gas from forming. Instead, it breaks up gas bubbles in the digestive tract so they’re easier to pass. It’s an anti-foaming agent, and research has shown it reduces gas bubble accumulation in the gut.¹² Simethicone is most useful for relieving the pressure and bloating that come from trapped gas bubbles, and you can take it after symptoms start.
• Activated charcoal: In a double-blind trial, activated charcoal significantly reduced hydrogen levels in the gut and improved symptoms of bloating and abdominal cramps.¹³ Charcoal can adsorb gas, but it can also interfere with the absorption of medications you might be taking, so it’s worth checking with a pharmacist if you’re on other drugs.

Of these three, alpha-galactosidase is the only one that actually prevents gas production from bean oligosaccharides. Simethicone and charcoal deal with gas after the fact. If you know a chili dinner is coming, taking an alpha-galactosidase tablet with the meal is the most targeted intervention.

Peppermint and Other Natural Carminatives

Peppermint tea after a meal is a folk remedy with some real science behind it. Peppermint oil, and its active compound menthol, relaxes smooth muscle in the intestinal wall by blocking calcium channels that drive muscle contraction.¹⁴ When the intestinal muscles relax, trapped gas can pass more easily rather than building up behind a spasm. This is the same mechanism that makes enteric-coated peppermint oil capsules a recognized treatment for irritable bowel syndrome symptoms, though for post-chili gas, a cup of peppermint tea is a gentler and more practical option.

Ginger and fennel are traditionally used for similar purposes. Their evidence base is thinner than peppermint’s, but they’re widely considered safe and are easy to try as a warm tea after a heavy meal. Chamomile is another traditional pick. None of these will stop the bacterial fermentation itself, but they can ease the cramping and pressure that make trapped gas uncomfortable.

What Capsaicin Does (and Doesn’t Do)

People often blame the heat of chili peppers for their digestive distress, but capsaicin’s role in gas production is indirect at best. Capsaicin doesn’t produce gas the way oligosaccharides do. What it can do is irritate the lining of the gut, especially in people who aren’t used to spicy food. That irritation can cause cramping, urgency, and a sensation of bloating that gets confused with gas but is really more about heightened sensitivity.

Interestingly, research on regular chili consumption suggests a desensitization effect. A randomized trial on people with diarrhea-predominant irritable bowel syndrome found that chronic chili ingestion actually raised the threshold at which participants first felt rectal sensation, meaning their guts became less reactive to stimulation over time.¹⁵ If spicy food consistently bothers your stomach, the science hints that gradual, repeated exposure may dial down that sensitivity. But in the short term, if you’re already dealing with gas from the beans, adding a lot of capsaicin on top can amplify your discomfort.

Drinks That Make It Worse

What you drink with chili matters. Beer is a common pairing, but it introduces carbonation, which adds extra gas directly to your stomach, and alcohol, which can slow gut motility and disrupt the microbiome. Research has found that gastric distress symptoms from carbonated beverages tend to appear after drinking more than about 300 milliliters.¹⁶ A single can of beer or soda puts you right around that threshold. If you’re already producing a lot of fermentation gas from the chili itself, piling carbonation on top is asking for trouble.

Eating quickly is another contributor. When you shovel in food, you swallow more air with each bite. That swallowed air adds to the total gas volume in your gut. Slowing down, chewing more thoroughly, and avoiding talking with your mouth full are small adjustments, but they can meaningfully reduce the air component of post-meal gas.

Why Your Reaction May Be Worse Than Everyone Else’s

If you notice that chili devastates you while the person across the table seems fine, it’s not in your head. The composition of your gut bacteria matters: people with more of the bacteria that efficiently ferment oligosaccharides will produce more gas from the same bowl of beans. There’s also the question of visceral hypersensitivity, a condition where the nerves in the gut are more reactive to normal amounts of distension. This plays a significant role in irritable bowel syndrome, where a standard volume of gas that wouldn’t bother most people causes real pain and bloating.¹⁷

If you have IBS or suspect you do, chili hits you with a triple threat: fermentable oligosaccharides from beans, fructans from onions and garlic, and capsaicin irritation. A low-FODMAP approach to chili, using smaller bean portions, swapping onion and garlic for their oil-infused equivalents (the problematic sugars are water-soluble but not fat-soluble), and going easier on the heat, can make the dish tolerable without eliminating it entirely.

Building Tolerance Over Time

One of the most consistent findings about bean-related gas is that it decreases with regular consumption. When your gut bacteria are regularly exposed to oligosaccharides, the microbial community shifts. Species that produce less gas or that consume the hydrogen and methane generated by other bacteria become more prevalent. Many people who start eating beans several times a week notice a significant reduction in flatulence within a few weeks.

This doesn’t mean the first two weeks are pleasant. If you’re not a regular bean eater and you suddenly start making chili every other night, expect some discomfort while your gut adapts. A more gradual approach, adding small amounts of beans to meals and slowly increasing the portion, tends to produce less dramatic symptoms during the transition. Combining this with the preparation strategies described earlier (soak, discard the water, pressure cook if possible) keeps the oligosaccharide load manageable while your microbiome adjusts.

Which Beans Produce the Most Gas

Not all beans are created equal when it comes to gas production, and your choice of bean for chili can make a real difference. Research measuring oligosaccharide content across eight legume species found that the total content and distribution of these sugars varied substantially between species.¹⁸ Fava beans and black soybeans had less favorable profiles in terms of fermentable sugars, while other species varied. In practical terms, lentils tend to be among the lower-gas legumes, while kidney beans and black beans, the classic chili choices, fall in the middle of the pack.

If gas is a persistent problem for you, experimenting with the type of bean in your chili is worth trying. A chili made with lentils or split peas won’t be traditional, but it will likely produce less fermentation. You can also mix a smaller amount of kidney beans with a larger portion of lentils to keep the texture and appearance closer to what you expect while cutting the total oligosaccharide dose. Chickpeas are another option that respond well to soaking, losing up to 40% of their oligosaccharides in the soak water alone.