Most cases of an upset stomach with diarrhea resolve on their own within one to three days, but the right combination of fluids, food choices, and simple remedies can speed your recovery and keep you comfortable in the meantime. The priority is replacing lost fluids, calming your digestive tract, and avoiding anything that makes things worse.
Start With Fluids, Not Food
Diarrhea pulls water and electrolytes out of your body fast. Replacing them is the single most important thing you can do. Plain water helps, but it doesn’t replace the sodium and potassium you’re losing. Oral rehydration solutions, clear broths, and diluted fruit juices are better options because they contain both fluid and electrolytes. Sports drinks work in a pinch, though they tend to be high in sugar, which can pull more water into your intestines and make diarrhea worse.
Take small, frequent sips rather than gulping large amounts at once. A stomach that’s already irritated is more likely to reject a big volume of liquid. If you’re vomiting alongside the diarrhea, wait 15 to 20 minutes after a vomiting episode, then try a few sips and gradually increase.
What to Eat (and What to Skip)
The old advice to eat only bananas, rice, applesauce, and toast still holds up for the first day or two, but there’s no reason to limit yourself to just those four foods. Harvard Health Publishing notes that brothy soups, oatmeal, boiled potatoes, crackers, and unsweetened dry cereals are equally easy on the stomach. The goal is bland, low-fiber, low-fat foods that won’t stimulate your gut.
Once your stomach starts settling, you can expand to more nutritious options: cooked carrots, butternut or pumpkin squash, sweet potatoes without skin, avocado, skinless chicken or turkey, fish, and eggs. These foods are gentle enough for a recovering digestive system but provide the protein and nutrients your body needs to bounce back.
Certain foods and drinks will make things worse. Dairy products, fried or greasy foods, caffeine, and alcohol all irritate an already inflamed gut. Pay special attention to sugar-free gums, candies, and drinks containing sugar alcohols like sorbitol and xylitol. These sweeteners are poorly absorbed in the colon, where they draw in extra water by increasing osmotic pressure, essentially worsening diarrhea through the same mechanism your body is already struggling with.
Over-the-Counter Options
Loperamide (the active ingredient in Imodium) slows the movement of your intestines, giving them more time to absorb water. The standard approach for adults is two caplets after the first loose stool, then one caplet after each subsequent loose stool, up to a maximum of four tablets in 24 hours for the over-the-counter version. It’s not recommended for children under 2.
Bismuth subsalicylate (Pepto-Bismol) works differently. It coats the lining of the stomach and has mild anti-inflammatory and antibacterial properties that help with both nausea and diarrhea. It can turn your tongue and stool black temporarily, which is harmless. Avoid it if you’re allergic to aspirin, since it contains a related compound.
One important note: if your diarrhea is bloody or accompanied by high fever, skip loperamide. Slowing gut motility when you have a bacterial infection can trap the bacteria inside longer and make things worse.
Ginger and Peppermint for Nausea
Ginger is one of the better-studied natural remedies for nausea. Clinical trials have used doses ranging from 250 mg to 1 g taken three to four times daily, with no extra benefit from doses above 1 g per day. Fresh ginger tea, ginger chews, or ginger capsules all work. The active compounds speed up gastric emptying, helping food move out of your stomach rather than sitting there making you feel sick.
Peppermint oil acts as a natural muscle relaxant for the digestive tract. It reduces calcium flow into the smooth muscle cells lining your gut, which eases cramping and spasms. Peppermint tea is the simplest way to get this benefit. Enteric-coated peppermint oil capsules are another option, designed to dissolve in the intestines rather than the stomach. If you deal with acid reflux, though, peppermint can relax the valve at the top of your stomach and make heartburn worse.
Probiotics Can Shorten Recovery
Certain probiotic strains help your gut fight off the bugs causing your symptoms. One of the most studied is Lactobacillus rhamnosus GG, which has been shown in systematic reviews to reduce both the duration of diarrhea and the length of hospital stays in children with acute infectious diarrhea. The European Society for Paediatric Gastroenterology recommends starting it alongside rehydration therapy early after symptoms begin.
For adults, the evidence is less robust but still promising. Look for products that list specific strains on the label rather than generic “probiotic blend” language. Yogurt with live active cultures can help if you tolerate dairy, but during active diarrhea a capsule form is usually easier on the stomach.
Keeping Children Hydrated
Children dehydrate faster than adults, so fluid replacement needs to be more deliberate. The American Academy of Pediatrics recommends using a pediatric electrolyte solution rather than juice, soda, or sports drinks. The amount depends on your child’s weight: a 22-pound toddler needs roughly 40 ounces of electrolyte solution over 24 hours during mild diarrhea, while a 40-pound child needs about 61 ounces.
For babies, watch for wet diapers. Fewer than six wet diapers in 24 hours, a dry mouth, crying without tears, or a sunken soft spot on the head are all signs of dehydration that need prompt medical attention. Older children who seem unusually tired, irritable, or who refuse fluids should also be evaluated quickly.
Warning Signs That Need Medical Attention
Most stomach bugs run their course without complications, but certain symptoms signal something more serious. For adults, these include vomiting or diarrhea lasting more than two days, inability to keep any liquids down for 24 hours, blood in your vomit or stool, severe stomach pain, fever above 104°F, and signs of dehydration like dark yellow urine, dizziness, or extreme thirst.
For children, the thresholds are lower. A fever of 102°F or higher, bloody diarrhea, signs of dehydration, or unusual lethargy all warrant a call to the pediatrician. Infants who are vomiting frequently or haven’t had a wet diaper in six hours need immediate evaluation.