Most stomach upset can be calmed within a few hours using a combination of what you eat, how you breathe, how you position your body, and what you keep in your medicine cabinet. The key is matching your approach to your specific symptoms, whether that’s nausea, bloating, cramping, or acid creeping up your throat.
Figure Out What’s Causing It
Before reaching for a remedy, it helps to narrow down what’s going on. The most common causes of acute stomach discomfort include eating too much or too quickly, fatty or spicy foods, stress and anxiety, bacterial or viral infections (food poisoning, stomach bugs), and certain medications like ibuprofen, iron supplements, or antibiotics. If you recently started a new medication and your stomach has been off ever since, that connection is worth noting.
Many people with recurring indigestion have what’s called functional dyspepsia, a condition where the gut and brain aren’t communicating smoothly. Anxiety and depression can play a direct role, and so can your stomach’s ability to relax and expand when food arrives. This is why calming your nervous system, not just your stomach, is often the fastest path to relief.
Calm Your Nervous System First
Your gut has its own nervous system, and it takes direct orders from your brain’s stress response. When you’re anxious or tense, your body diverts energy away from digestion, which can cause cramping, nausea, and that tight, churning feeling.
Diaphragmatic breathing is one of the fastest ways to reverse this. Breathe in slowly through your nose for four counts, letting your belly push outward rather than your chest rising. Hold briefly, then exhale slowly for six counts. This activates your vagus nerve, the long nerve running from your brainstem to your abdomen, which triggers your body’s relaxation response and dials down the stress signals reaching your gut. Five minutes of this can noticeably reduce cramping and nausea, especially if stress is a contributing factor.
What to Eat and Drink
When your stomach is actively upset, the goal is to give it the least possible work to do. Cold, bland foods tend to be the most soothing. Applesauce, plain yogurt, mashed potatoes without the skin, oatmeal, and canned peaches are all gentle options. The old BRAT approach (bananas, rice, applesauce, toast) still works as a starting point, but it’s not nutritionally complete. Start adding other bland, low-fat, low-fiber foods as soon as you feel comfortable eating more. If you’re avoiding gluten, swap in gluten-free bread.
Avoid anything greasy, acidic, spicy, or high in fiber until your stomach settles. Coffee, alcohol, and carbonated drinks can all make things worse. Eat small amounts rather than full meals.
Staying hydrated matters more than eating, especially if you’ve been vomiting or dealing with diarrhea. Plain water works for mild cases, but if you’ve been losing fluids, a simple rehydration drink does a better job. The formula from UVA Health: mix 4 cups of water with half a teaspoon of table salt and 2 tablespoons of sugar. The sugar isn’t for taste. It helps your intestines absorb the water and salt more efficiently. Sip slowly rather than gulping.
Ginger and Peppermint
Ginger has genuine anti-nausea properties, thanks to compounds called gingerols and shogaols that act on receptors in your digestive tract. Ginger tea, ginger chews, or even flat ginger ale (let it go flat first, since carbonation can irritate an upset stomach) can help with nausea and mild cramping. Fresh ginger steeped in hot water for 10 minutes is a simple option.
Peppermint is trickier. Peppermint combined with caraway oil has shown some benefit for indigestion, but peppermint oil taken on its own can actually worsen symptoms in some people. If you have acid reflux, peppermint relaxes the valve between your stomach and esophagus, which lets acid travel upward. A cup of mild peppermint tea is generally fine for bloating or gas, but skip it if heartburn is part of the picture.
Over-the-Counter Options
Different products target different symptoms, so choosing the right one matters. Antacids (the chewable tablets) neutralize stomach acid and work fast for heartburn or that burning feeling in your upper abdomen. They’re a good first choice if acid seems to be the problem.
Bismuth subsalicylate (the pink liquid) is more versatile. It helps with nausea, indigestion, and diarrhea, and it’s the go-to for general stomach upset when you’re not sure exactly what’s wrong. Loperamide, by contrast, is specifically for diarrhea. It slows gut motility, meaning it reduces how quickly things move through your intestines. It won’t help with nausea or cramping that isn’t diarrhea-related.
If bloating and gas are your main complaints, products containing simethicone help break up gas bubbles. They won’t address nausea or acid.
How You Position Your Body
Physical positioning makes a real difference, especially for acid-related discomfort. If you’re lying down, turn onto your left side. The American Gastroenterological Association recommends this position because of where your stomach sits relative to your esophagus. When you’re on your left side, gravity helps keep stomach acid pooled away from the opening to your esophagus. Lying on your right side does the opposite and can make reflux worse.
If you can’t sleep because of stomach discomfort, prop your upper body up at an angle rather than lying flat. A wedge pillow or an extra pillow under your shoulders (not just your head, which can kink your neck) keeps acid where it belongs.
For cramping or gas, gentle movement helps more than staying still. A slow walk around your house can encourage trapped gas to move through. Drawing your knees to your chest while lying on your back can also relieve pressure.
Applying Heat
A heating pad or warm water bottle placed on your abdomen relaxes the smooth muscle in your stomach and intestines. This is particularly effective for cramping and that tight, clenched feeling. Keep the temperature comfortable, not hot, and use a cloth barrier between the heat source and your skin. Twenty minutes on, twenty minutes off is a reasonable rhythm.
When Stomach Upset Needs Medical Attention
Most stomach discomfort resolves on its own within a few hours to a couple of days. But certain symptoms signal something more serious. Seek emergency care if you’re vomiting blood, notice black or bloody stool, have blood in your urine, or experience chest pain, shortness of breath, or dizziness alongside your stomach symptoms. A swollen, tender abdomen, high fever, or persistent vomiting that won’t let up also warrant immediate attention. These can indicate internal bleeding, appendicitis, bowel obstruction, or severe infection, all of which need treatment that home remedies can’t provide.