When you have traveler’s diarrhea, stick to bland, starchy foods and focus heavily on replacing lost fluids and salt. Most cases resolve within three to five days, and what you eat during that window can either speed your recovery or make things worse. The goal is simple: keep calories coming in without irritating your gut, and replace the water and electrolytes you’re losing with every trip to the bathroom.
Fluids Come First
Dehydration is the real danger with traveler’s diarrhea, not the diarrhea itself. Every loose stool pulls water, sodium, and potassium out of your body, and replacing those losses matters more than any food choice you make. Plain water helps, but it doesn’t replace electrolytes. Oral rehydration solutions are the gold standard: the World Health Organization formula is just one liter of clean water mixed with half a teaspoon of salt and two tablespoons of sugar. The sugar isn’t just for taste. It helps your intestines absorb the sodium and water far more efficiently than water alone.
If you can’t mix your own, look for oral rehydration packets sold at pharmacies in most countries. Brothy soups, particularly clear chicken or vegetable broth, also deliver sodium and fluid together. Coconut water is a reasonable source of potassium. Avoid anything with caffeine, alcohol, or high sugar content, all of which can pull more water into your intestines and make diarrhea worse.
The Best Foods During Active Symptoms
You’ve probably heard of the BRAT diet: bananas, rice, applesauce, and toast. It’s a fine starting point for the first day or two, but there’s no reason to limit yourself to just those four items. A broader range of bland, easy-to-digest foods works just as well and gives you more nutrients to recover with.
Good choices include:
- White rice and plain noodles: White rice is rich in starch that converts to soluble fiber in your gut, helping firm up loose stools.
- Bananas: High in potassium (which you’re losing) and contain pectin, a soluble fiber that binds excess water in the intestines.
- Boiled potatoes: Easy to digest and a good source of calories and potassium. Skip the butter.
- Applesauce: Like bananas, apples contain pectin that helps solidify stool. Stick to unsweetened varieties.
- Plain toast or saltine crackers: Gentle on the stomach and provide some sodium.
- Oatmeal: Another source of soluble fiber that’s easy to keep down.
- Boiled vegetables: Carrots, squash, and green beans are well tolerated when cooked soft.
- Tortillas: A practical option in Latin America and other common travel destinations.
Eat small amounts frequently rather than large meals. Your gut is inflamed, and overwhelming it with a big plate of food can trigger cramping and more urgent trips to the bathroom. If eating feels impossible in the first several hours, that’s okay. Prioritize fluids and introduce small bites of starchy food when you can.
Foods and Drinks That Make It Worse
Your intestinal lining is temporarily damaged, which changes how it handles certain foods. Some things that are perfectly fine when you’re healthy will actively worsen symptoms right now.
Dairy is a major one. The cells lining your small intestine produce the enzyme that breaks down lactose, and when those cells are damaged by infection, lactose passes through undigested. This draws extra water into your gut and feeds bacteria that produce gas. Some people have trouble digesting dairy for a month or more after a bout of traveler’s diarrhea, even after other symptoms resolve.
High-fat foods like fried dishes, pizza, and fast food are harder to digest under normal circumstances and significantly harder when your gut is inflamed. Greasy food speeds up intestinal contractions, which is the last thing you need. Caffeine does the same, stimulating your colon to move things along faster. Skip coffee, black tea, energy drinks, and caffeinated sodas.
Sugary foods and drinks are another trap. Fructose and sugar alcohols (found in diet candies, sugarless gum, and many packaged desserts) are poorly absorbed even in healthy guts. During diarrhea, they pull water into the intestines through osmosis. Fruit juice, despite sounding healthy, often contains enough fructose to worsen symptoms. Alcohol is off the table entirely, as it irritates the gut lining and acts as a diuretic, accelerating dehydration.
When and How to Return to Normal Eating
There’s no rigid schedule for food reintroduction. The practical marker is your stool: once bowel movements start returning to a formed, solid consistency, you can gradually expand your diet back to normal. For most people, this happens within three to five days, though some cases take a week.
Start by adding lean proteins like plain grilled chicken or fish. Then reintroduce cooked vegetables with a bit more fiber. Raw salads, spicy food, and rich sauces should come last. Dairy deserves extra caution. Try a small amount of yogurt (which contains bacteria that partially pre-digest the lactose) before jumping back to milk or cheese. If dairy triggers bloating or loose stools, give it another week.
Pay attention to portion size as you transition. Your gut has been through a lot, and large meals can cause discomfort even after the infection clears. Eating smaller, more frequent meals for a few days after recovery gives your intestinal lining time to fully heal.
What About Probiotics?
Probiotics are a popular suggestion, but the evidence for traveler’s diarrhea specifically is weak. The CDC notes that strains like Lactobacillus GG and Saccharomyces boulardii have been studied in small numbers of travelers, with inconclusive results. One challenge is that standardized preparations of these bacteria aren’t reliably available across different countries and brands, making it hard to know if what you’re buying matches what was tested.
That said, probiotics are unlikely to cause harm. If you already have a trusted supplement on hand, there’s no strong reason to avoid it. Just don’t rely on probiotics as a substitute for proper hydration and dietary choices, which have a much clearer impact on recovery.
A Practical Eating Plan While Traveling Sick
In practice, managing your diet with traveler’s diarrhea depends heavily on where you are. Hotel restaurants and street food stalls don’t always offer plain boiled rice or clear broth on demand. A few strategies help. Carry oral rehydration packets in your travel kit before you ever get sick. Plain white rice is available nearly everywhere in the world and is almost always safe when freshly cooked and served hot. Bananas are sold on practically every street corner in tropical countries and require no preparation. Saltine crackers or plain bread from a sealed package are reliable fallbacks.
If you’re ordering from a restaurant, ask for plain steamed rice, clear soup, or boiled noodles without sauce. Avoid buffets, where food may have been sitting at lukewarm temperatures. Stick to bottled or boiled water for mixing rehydration solutions, and avoid ice in drinks unless you’re certain it was made with purified water.