Most upset stomachs resolve on their own within a day or two, and the right combination of dietary changes, simple remedies, and rest can speed that process along considerably. Whether you’re dealing with nausea, bloating, cramping, or diarrhea, the goal is the same: calm the irritation, keep yourself hydrated, and avoid anything that makes your stomach work harder than it needs to.
Why Your Stomach Feels Off
An upset stomach is a catchall term for a cluster of symptoms: nausea, bloating, cramping, early fullness, and sometimes diarrhea or vomiting. The triggers range from something you ate to stress to a passing virus, but the underlying mechanics are similar. Your stomach may not be emptying food at its normal pace, your gut lining may be mildly inflamed, or the nerves in your digestive tract may be reacting more strongly than usual to normal stretching and pressure.
Your brain and gut communicate constantly through neural, hormonal, and immune pathways. This is why anxiety or stress can produce very real stomach symptoms, and why a stomach bug can leave you feeling mentally foggy or on edge. Food intolerances, shifts in gut bacteria, and infections (even mild ones) can all trigger low-grade inflammation that disrupts normal digestion. Most of the time, the cause is temporary and the fix is straightforward.
Start With What You Eat and Drink
Hydration comes first. Vomiting and diarrhea deplete fluids and electrolytes quickly, and dehydration makes nausea worse. Sip water, clear broth, or an electrolyte drink in small amounts rather than gulping large quantities, which can trigger more nausea. If plain water is hard to keep down, try sucking on ice chips.
The old BRAT diet (bananas, rice, applesauce, toast) is fine for a day or two, but there’s no reason to limit yourself to just those four foods. Harvard Health notes that brothy soups, oatmeal, boiled potatoes, crackers, and unsweetened dry cereals are equally easy to digest. Once your stomach starts to settle, add foods with more nutritional value: cooked carrots, sweet potatoes without the skin, avocado, skinless chicken or turkey, fish, and eggs. These are still bland and gentle, but they give your body the protein and nutrients it needs to recover.
What you avoid matters just as much. Fatty and fried foods linger in the stomach longer and are more likely to provoke acid reflux. Spicy foods, citrus, tomato-based sauces, chocolate, caffeine, carbonated drinks, and alcohol all tend to worsen symptoms. Dairy can be hard to tolerate during a bout of stomach upset, especially if diarrhea is involved, because the enzymes that break down lactose are temporarily reduced when the gut lining is irritated.
Ginger for Nausea
Ginger is one of the most well-studied natural remedies for nausea. It appears to work by enhancing the movement of food through the digestive tract and by blocking certain serotonin receptors in the gut that trigger the vomiting reflex. Clinical trials have used doses ranging from 250 mg to 1 g per day, split into three or four portions, with no additional benefit seen at higher doses. In practical terms, that’s a thumb-sized piece of fresh ginger steeped in hot water as tea, or a few ginger chews or capsules from a pharmacy.
Ginger ale is a popular folk remedy, but most commercial brands contain very little actual ginger and a lot of sugar and carbonation, both of which can make things worse. Fresh ginger tea or standardized ginger supplements are more reliable options.
Peppermint for Cramping and Bloating
If your stomach upset involves cramping or a tight, bloated feeling, peppermint can help. It relaxes the smooth muscle lining of the digestive tract by blocking calcium channels in the gut wall, which reduces spasms. In controlled trials, patients who received peppermint oil experienced significantly less intestinal spasm compared to placebo groups, with relief rates roughly doubling.
Peppermint tea is the gentlest option. Enteric-coated peppermint oil capsules, available over the counter, deliver the oil further down the digestive tract and are useful for lower abdominal cramping and bloating. One caution: peppermint relaxes the valve between the esophagus and stomach, so if heartburn is part of your problem, it can make acid reflux worse.
Over-the-Counter Options
For general stomach upset with nausea or diarrhea, bismuth subsalicylate (the active ingredient in Pepto-Bismol) coats the stomach lining and has mild anti-inflammatory and antimicrobial effects. The standard adult dose is two tablets or two tablespoons of liquid every 30 minutes to an hour as needed, up to a maximum of 16 doses in 24 hours. It should not be used in children under 12 or by anyone taking blood thinners, since it contains a compound related to aspirin.
Antacids (like Tums or Rolaids) neutralize stomach acid and work best when heartburn or acid indigestion is the main symptom. They provide fast but short-lived relief. If bloating and gas are the primary complaints, simethicone (found in Gas-X) breaks up gas bubbles in the gut and can ease that uncomfortable pressure. For diarrhea specifically, loperamide (Imodide) slows intestinal movement, but it’s best reserved for situations where you need temporary control, not as a first-line approach, since diarrhea is your body’s way of clearing an irritant.
The P6 Pressure Point
Acupressure at a point called P6 (or Neiguan) is a simple, no-cost technique that may reduce nausea. The point sits on the inner forearm, about three finger-widths above the wrist crease, between the two prominent tendons. Press firmly with your thumb for one to three minutes, or wear an acupressure wristband (like Sea-Bands) that applies constant pressure to the spot.
A meta-analysis covering 33 trials and over 3,300 patients found that P6 acupressure significantly reduced both the frequency and severity of nausea, though some of the benefit may come from placebo effect. It was studied most extensively in pregnancy-related nausea, but the technique is used broadly for motion sickness and post-surgical nausea as well. There’s no downside to trying it.
Probiotics for Recovery
If your stomach upset involves diarrhea, particularly from a stomach bug, probiotics can shorten the episode. A large Cochrane review found that probiotics reduced the average duration of diarrhea by about 30 hours and cut the risk of diarrhea lasting beyond three days by roughly a third. The strain with the strongest evidence is Lactobacillus GG, which was especially effective against viral gastroenteritis. In one trial, children receiving this strain had stool frequency drop to near zero by day three, compared to an average of two episodes per day in the control group.
Probiotics were less effective for bacterial diarrhea, so they’re not a universal fix. You can get them through supplements (look for products containing Lactobacillus or Bifidobacterium strains) or through foods like plain yogurt with live cultures, though yogurt may be hard to tolerate if dairy is bothering you.
Other Simple Measures That Help
Heat applied to the abdomen relaxes muscles and increases blood flow, which can ease cramping. A heating pad or warm water bottle on your stomach for 15 to 20 minutes is a reliable, low-tech option. Lying on your left side can also help, since it positions the stomach in a way that makes it easier for gas to pass through.
Eat small portions rather than full meals. A stomach that’s already struggling will rebel against a large volume of food. Five or six small snacks spread through the day are easier to process than three regular meals. Chew slowly and avoid lying flat immediately after eating, which encourages acid reflux. If nausea is severe, try getting some fresh air or sitting upright rather than curling up, since body position influences how your brain processes nausea signals.
Signs That Need Medical Attention
Most upset stomachs pass within 24 to 48 hours. Certain symptoms, however, signal something more serious. Severe pain that doesn’t improve or gets worse over time warrants a call to your doctor, especially if it’s localized to one area of the abdomen rather than a general ache. Stomach pain paired with fever suggests possible infection or inflammation, such as appendicitis or diverticulitis.
Blood in your stool or vomit, yellowing of the skin or eyes (which can point to a liver or gallbladder problem), inability to keep any fluids down for more than 12 hours, or signs of dehydration like dark urine, dizziness, or dry mouth all call for prompt medical evaluation. If the pain is new, unusually intense, or just feels different from anything you’ve experienced before, trust that instinct.