Most cases of diarrhea clear up on their own within one to two days, and the single most important thing you can do at home is replace the fluids and electrolytes your body is losing. Beyond hydration, a few targeted strategies with food, over-the-counter options, and probiotics can shorten recovery time and keep you comfortable while your gut heals.
Start With Fluids, Not Food
Every loose stool pulls water, sodium, and potassium out of your body. Mild dehydration sets in faster than most people expect, especially if you’re also vomiting. Your first priority is steady sipping, not eating.
Plain water replaces volume but not electrolytes. A simple oral rehydration solution does both. You can make one at home: combine 4 cups of water, half a teaspoon of table salt, and 2 tablespoons of sugar. Stir until dissolved and drink throughout the day. The sugar isn’t just for taste. It activates a transport system in your intestinal lining that pulls sodium and water back into your body, which plain water alone can’t do as efficiently.
If the basic recipe doesn’t appeal to you, a few variations work just as well. Mix 2 cups of regular (not low-sodium) chicken broth with 2 cups of water and 2 tablespoons of sugar. Or dilute three-quarters of a cup of cranberry juice in about 3 cups of water with half a teaspoon of salt. Even a sports drink like Gatorade G2 with half a teaspoon of salt stirred in provides a reasonable electrolyte balance.
One thing to avoid: full-strength fruit juice, soda, and other sugary drinks. Fructose and sorbitol in these beverages are poorly absorbed, and the high sugar concentration draws extra water into your intestines, making diarrhea worse. If you want juice, dilute it heavily.
What to Eat During Recovery
You don’t need to starve yourself, but you do need to be selective. A low-fiber diet limits the bulk moving through your already irritated gut and can reduce both the frequency and urgency of bowel movements.
Foods that are generally well tolerated include white rice, white bread, saltine crackers, plain pasta, eggs, tender cooked chicken or fish, bananas, applesauce, canned peaches without the skin, and well-cooked carrots, potatoes, or green beans. Creamy peanut butter and tofu are also fine. These are all low in fiber and easy to digest.
Hold off on nuts, seeds, whole grains, brown rice, oatmeal, dried beans, lentils, raw vegetables, dried fruit, and anything with bran or wheat germ. These high-fiber foods are healthy under normal circumstances but will keep your bowels working overtime right now. Greasy, fried, or heavily spiced foods tend to aggravate symptoms too.
Dairy is a gray area. Cheese, yogurt, and milk are low in fiber and technically allowed, but many people develop temporary lactose intolerance during a bout of diarrhea because the infection or inflammation damages the enzymes that break down milk sugar. If dairy seems to make things worse, skip it until you’ve fully recovered.
Over-the-Counter Medications
Two types of OTC medication are commonly used. The first is an anti-motility drug (sold as Imodium), which slows intestinal contractions so your body absorbs more water from stool. The second is bismuth subsalicylate (Pepto-Bismol), which reduces inflammation in the gut lining and has mild antimicrobial effects. Both can provide relief within an hour or two.
These medications are useful for managing symptoms, but there are clear situations where you should skip them entirely: if you have a fever, severe abdominal pain, black or tarry stools, blood in your stool, persistent vomiting, or unexplained weight loss. In those cases, your body may be fighting a bacterial infection that needs to run its course or requires medical treatment. Anti-diarrheal medications can trap harmful bacteria in your system and delay recovery.
Also avoid these medications if your diarrhea started while traveling internationally, as traveler’s diarrhea sometimes involves pathogens that need specific treatment.
Probiotics Can Shorten Recovery
Probiotics introduce beneficial microbes that compete with whatever is disrupting your gut. Not all strains are equally effective. A large meta-analysis of 84 randomized trials covering more than 13,000 children found that the yeast-based probiotic Saccharomyces boulardii was the most effective at shortening diarrhea duration, cutting it by about 1.25 days compared to placebo. It also reduced the chance of diarrhea lasting two or more days by nearly 80%.
Lactobacillus reuteri performed nearly as well, reducing duration by about 0.84 days. Multi-strain combinations containing Lactobacillus, Bifidobacterium, and Saccharomyces species also showed significant benefits. While this research focused on children, Saccharomyces boulardii is widely used and studied in adults with acute diarrhea too.
Look for these specific strains on the label rather than grabbing a generic “digestive health” probiotic. Saccharomyces boulardii is sold under brand names like Florastor and is available at most pharmacies. Start taking it as soon as symptoms begin for the best results.
Helping Children Recover
Children dehydrate faster than adults because of their smaller body size and higher metabolic rate. Oral rehydration solutions are even more critical for kids. Pedialyte or a homemade version (the same water, salt, and sugar recipe works) should be offered in small, frequent sips rather than large gulps, which can trigger vomiting.
For babies under six months, breastfeeding or formula should continue as normal, with oral rehydration solution offered between feedings. The World Health Organization recommends zinc supplementation for children with diarrhea: 20 mg per day for 10 to 14 days, or 10 mg per day for infants under six months. Zinc helps repair the intestinal lining and reduces both the severity and duration of the episode. Zinc supplements for children are available in dissolvable tablet form at most pharmacies.
Be especially careful with sugary drinks for toddlers. Their smaller, less mature intestines are more vulnerable to the osmotic effect of poorly absorbed sugars like fructose and sorbitol. Apple juice, fruit punch, and soda can significantly worsen a young child’s diarrhea.
Signs That Need Medical Attention
Most diarrhea resolves within 48 hours. If yours persists beyond two days without any improvement, that’s the threshold where the Mayo Clinic recommends scheduling a medical visit. The underlying cause may be something that won’t resolve on its own, such as a bacterial infection, a parasite, or a reaction to medication.
Seek immediate help if you notice signs of severe dehydration: confusion, fainting, no urination for many hours, rapid heartbeat, or rapid breathing. In children, watch for a dry mouth with no tears when crying, sunken eyes, unusual drowsiness, or a sunken soft spot on an infant’s head. These signs mean fluid loss has outpaced what you can replace by mouth, and intravenous fluids may be needed.
Black or tarry stools, high fever, or severe abdominal pain also warrant prompt medical evaluation regardless of how long symptoms have lasted.
A Practical Recovery Timeline
In the first 6 to 12 hours, focus almost entirely on fluids. Small, frequent sips of oral rehydration solution are more effective than drinking large amounts at once, which can overwhelm your stomach and come right back up. If you’re vomiting, wait 15 to 20 minutes after an episode before trying again with just a tablespoon at a time.
Once you can keep fluids down reliably, usually by the end of the first day, start introducing bland, low-fiber foods in small portions. White rice, plain toast, bananas, and broth-based soups are good starting points. Eat based on appetite rather than forcing meals.
By day two or three, most people notice a clear reduction in frequency. This is a good time to gradually reintroduce normal foods, starting with lean proteins and cooked vegetables before adding back fiber-rich foods, dairy, and anything fatty or spicy. Rushing this transition is the most common reason people experience a setback. Give your gut a full week before returning to your usual diet if the episode was severe.