Most upset stomachs resolve on their own within a few hours to a day, but you can speed things along with a combination of dietary changes, simple remedies, and the right over-the-counter options. The key is calming the muscle contractions in your digestive tract, reducing inflammation, and giving your stomach time to reset.
Why Your Stomach Feels Off
Your stomach has a natural rhythm of muscle contractions that push food through your digestive system. When something disrupts that rhythm, the muscles can fire too quickly, too slowly, or out of sync. This leads to the familiar symptoms: nausea, bloating, cramping, and that heavy, uncomfortable fullness. Stress hormones like adrenaline can trigger this disruption, which is why your stomach acts up when you’re anxious or overwhelmed. Overeating, rich or fatty foods, alcohol, and infections all do the same thing through slightly different pathways.
Bloating doesn’t always mean food is sitting in your stomach too long. Sometimes the opposite happens: food empties too quickly into the small intestine, stretching it and creating that distended, gassy feeling. This is why the same symptom can have different triggers, and why no single remedy works for every type of stomach upset.
What to Eat (and Avoid) Right Now
You’ve probably heard of the BRAT diet: bananas, rice, applesauce, and toast. It works fine for the first day or two when your stomach is at its worst, but there’s no need to limit yourself to just those four foods. Brothy soups, oatmeal, boiled potatoes, crackers, and unsweetened dry cereal are equally gentle and give your body more to work with nutritionally.
Once the worst has passed, usually after 24 to 48 hours, start adding more substantial foods back in: cooked squash, carrots, sweet potatoes without skin, avocado, skinless chicken or turkey, fish, and eggs. The foods to keep avoiding a bit longer are those high in insoluble fiber, like leafy greens, fruit and vegetable skins, popcorn, nuts, seeds, and beans. That type of fiber is harder to digest when your gut is still recovering.
Small, frequent meals are easier on your stomach than two or three large ones. Eating slowly and chewing thoroughly gives your digestive system less work to do all at once.
Home Remedies That Actually Help
Peppermint
Peppermint oil relaxes the smooth muscle lining your digestive tract, essentially telling those overactive contractions to calm down. It works by blocking calcium signals that trigger muscle tightening in the gut wall. Peppermint tea is the easiest option for quick relief. If you deal with stomach issues regularly, enteric-coated peppermint oil capsules deliver the oil directly to your intestines rather than releasing it in your stomach, which can sometimes worsen heartburn.
Ginger
Ginger is one of the most reliable natural options for nausea. It speeds up gastric emptying, helping food move out of your stomach when that sluggish, too-full feeling is the problem. Fresh ginger steeped in hot water for 5 to 10 minutes makes a simple tea. Ginger chews and ginger ale (made with real ginger, not just flavoring) also work, though in smaller doses.
Heat
A heating pad or hot water bottle placed on your abdomen increases blood flow to the area and relaxes tense muscles. This is particularly helpful for cramping. Keep the temperature comfortable, not hot enough to redden your skin, and use it for 15 to 20 minutes at a time.
Acupressure
There’s a pressure point on your inner wrist called P6 that can reduce nausea. To find it, hold your hand with your palm facing you and fingers pointing up. Place three fingers across your wrist, starting at the crease where your hand meets your arm. Just below where your index finger lands, between the two tendons running up your forearm, press firmly with your thumb. Hold for two to three minutes, then switch wrists. Memorial Sloan Kettering Cancer Center recommends this technique for nausea, including for chemotherapy patients, so it’s well-supported even for more severe cases.
Over-the-Counter Options
Bismuth subsalicylate (the active ingredient in Pepto-Bismol and Kaopectate) treats the full range of upset stomach symptoms: nausea, heartburn, and diarrhea. It reduces inflammation in the intestinal lining and decreases excess fluid movement in the bowel. One important note: it contains a compound related to aspirin, so if you’re allergic to aspirin or other salicylate pain relievers, skip it entirely. It’s approved for adults and children 12 and older.
Antacids like calcium carbonate (Tums) work within minutes for heartburn and acid-related discomfort by neutralizing stomach acid directly. They’re best for that burning, sour feeling rather than general nausea or bloating. Simethicone (Gas-X) targets bloating and gas specifically by breaking up gas bubbles in your digestive tract, but it won’t help with nausea or cramping.
Choosing the right product depends on your primary symptom. Burning and sourness points to excess acid. Bloating and pressure points to gas. General queasiness with possible diarrhea is where bismuth subsalicylate shines.
What About Apple Cider Vinegar?
Despite its popularity online, there is no published clinical research supporting apple cider vinegar as a treatment for heartburn or upset stomach. The common theory is that adding acid helps a stomach that isn’t producing enough on its own, but the valve between your esophagus and stomach is controlled by a complex system of muscles, hormones, and nerve signals, not just acidity levels. Drinking vinegar on an already irritated stomach lining can make things worse, not better. Stick with proven options.
Probiotics for Gut Recovery
If your upset stomach is related to an infection, a course of antibiotics, or food poisoning, a probiotic containing Saccharomyces boulardii can help shorten recovery time. In a large clinical trial, patients taking S. boulardii alongside standard treatment experienced diarrhea lasting 5 days compared to 7.7 days without it, and the rate of severe diarrhea dropped by roughly half. You can find S. boulardii supplements at most pharmacies. They’re particularly useful when your gut flora has been disrupted rather than for a one-off bout of indigestion from overeating.
When It’s More Than a Stomach Ache
Most upset stomachs are harmless and short-lived, but certain symptoms signal something that needs immediate attention. Seek emergency care if you experience:
- Vomiting blood or dark, coffee-ground-like material, which indicates gastrointestinal bleeding
- Severe abdominal pain with a rigid or distended belly, especially if it hurts to press on it
- Green or yellow (bilious) vomit, which can indicate a bowel obstruction
- Fainting or near-fainting along with abdominal pain
- High fever combined with abdominal pain, which may point to infection requiring treatment
Stomach discomfort that lingers beyond 48 hours without improvement, or that keeps coming back in a pattern, is worth investigating. Persistent symptoms can point to conditions like gastritis, ulcers, or motility disorders that benefit from targeted treatment rather than home remedies alone.