Most upset stomachs can be managed at home with a combination of over-the-counter medications, simple dietary changes, and proper hydration. The right approach depends on your specific symptoms, whether that’s nausea, heartburn, diarrhea, or general indigestion.
Over-the-Counter Options by Symptom
The pink liquid you probably grew up with (bismuth subsalicylate, sold as Pepto-Bismol and similar brands) is one of the most versatile options. It treats diarrhea, heartburn, indigestion, and nausea all in one product. It works by increasing mucus production in the stomach lining, reducing inflammation in the intestines, and blocking the action of pepsin, a digestive enzyme that can irritate damaged tissue. It also has antibacterial properties, which makes it useful for traveler’s diarrhea and food poisoning.
One important caution: bismuth subsalicylate contains salicylate, which is chemically related to aspirin. Children and teenagers should not take it, especially during or after a viral illness like the flu or chickenpox, because salicylates are linked to Reye’s syndrome, a rare but serious condition affecting the brain and liver.
If your main symptom is heartburn or acid reflux, you have two speed options. Antacids like calcium carbonate (Tums, Rolaids) neutralize stomach acid and work within minutes, but the relief is short-lived. H2 blockers like famotidine (Pepcid) take about an hour to kick in but keep working for four to ten hours. If you need quick relief now and lasting relief later, some people use both.
For diarrhea specifically, loperamide (Imodium) slows intestinal movement to give your body more time to absorb water from stool. It’s effective for acute episodes but shouldn’t be used if you have a high fever or bloody diarrhea, as those symptoms suggest an infection your body needs to flush out.
What to Eat and What to Avoid
The classic BRAT diet (bananas, rice, applesauce, toast) has been a go-to recommendation for decades, and it’s still a reasonable starting point for the first day or two of stomach trouble. These foods are bland, low in fiber, and easy to digest. But you don’t need to limit yourself to just those four items. Brothy soups, oatmeal, boiled potatoes, crackers, and plain dry cereal are equally gentle on your stomach.
The bigger priority is getting back to nutritious food relatively quickly. Once your stomach starts to settle, adding cooked squash, carrots, skinless chicken, fish, eggs, and avocado gives your body the protein and nutrients it needs to recover. Sticking with only bananas and rice for days on end can actually slow recovery by depriving you of essential nutrition.
While you’re symptomatic, avoid dairy, fried or greasy foods, caffeine, alcohol, and heavily spiced dishes. These can all increase acid production or speed up digestion in ways that make things worse.
Hydration Matters More Than You Think
Dehydration is the biggest practical risk from an upset stomach, especially if you’re dealing with vomiting or diarrhea. Water alone helps, but when you’re losing fluids quickly, your body also loses electrolytes like sodium and potassium that plain water doesn’t replace.
The World Health Organization’s oral rehydration formula uses a precise balance of glucose and salts dissolved in water. You can buy premade versions (Pedialyte, DripDrop, or generic electrolyte packets) at most pharmacies. A simple homemade version uses about half a teaspoon of salt and six teaspoons of sugar per liter of water, though commercial products are more reliable for getting the ratio right.
Sip slowly rather than gulping. If you’re vomiting, taking small sips every few minutes is more likely to stay down than drinking a full glass at once. Clear broths and diluted fruit juices also count toward your fluid intake.
Do Probiotics Help?
Probiotics are live bacteria that can help restore balance in your gut, and the evidence for certain strains during acute diarrhea is promising but mixed. In a meta-analysis of over 1,200 children, one strain (Lactobacillus reuteri) shortened diarrhea episodes by about 25 hours. Another commonly recommended strain, Lactobacillus rhamnosus GG, showed a two-day reduction in diarrhea duration in one analysis of children with rotavirus, but a larger trial of 646 children found no significant benefit.
The takeaway: probiotics are unlikely to hurt and may help shorten recovery, but they’re not a replacement for hydration and basic symptom management. Yogurt with live cultures, kefir, or a probiotic supplement are all reasonable options if you want to try this route. Look for products that list specific strains on the label rather than vague “probiotic blend” claims.
Home Remedies Worth Trying
Ginger is one of the best-supported natural remedies for nausea. Ginger tea, ginger chews, or even flat ginger ale can help calm your stomach. Peppermint tea is another option, though it can worsen heartburn in some people by relaxing the valve between the esophagus and stomach.
Heat applied to your abdomen (a heating pad or warm water bottle on a low setting) can relax cramping muscles and ease discomfort. Lying on your left side may also reduce acid reflux, since this position keeps the junction between your stomach and esophagus above the level of stomach acid.
Signs That Need Medical Attention
Most upset stomachs resolve within 24 to 48 hours. But certain patterns signal something more serious. Seek emergency care if your abdominal pain is sudden and severe, doesn’t ease within 30 minutes, or comes with continuous vomiting. Pain in the lower right abdomen combined with fever, nausea, and loss of appetite can indicate appendicitis. Severe upper abdominal pain that worsens after eating and lasts for days may point to pancreatitis.
Other red flags include bloody or black stools, vomiting blood, signs of significant dehydration (very dark urine, dizziness, no urination for many hours), or abdominal pain during pregnancy. Any of these warrant prompt evaluation rather than continued home treatment.