Most cases of diarrhea clear up on their own within a few days with simple home treatment: staying hydrated, eating the right foods, and letting your gut recover. Acute diarrhea lasts less than two weeks, and the vast majority of episodes fall well within that window. The priority is replacing lost fluids and electrolytes while avoiding anything that makes symptoms worse.
Hydration Is the First Priority
Diarrhea pulls water and essential salts out of your body fast. Mild dehydration causes thirst, dry mouth, and darker urine. Severe dehydration, defined as losing 7% or more of your body weight in fluid, can cause dangerously low blood pressure, rapid heart rate, confusion, and cool or clammy skin. That progression is preventable if you start replacing fluids early.
Oral rehydration solutions (ORS) are the gold standard because they contain the right balance of sodium, potassium, and glucose to help your intestines absorb water efficiently. You can find packets at most pharmacies, or look for premixed solutions like Pedialyte. Sports drinks are a common substitute, but they’re not ideal. They contain too little sodium relative to their sugar content, which can actually worsen dehydration by pulling more water into the intestines. If sports drinks are all you have, diluting them with water helps, but ORS is a better choice when diarrhea is frequent or severe.
Sip fluids steadily rather than gulping large amounts at once. Water, clear broth, and diluted fruit juices (avoiding apple and pear, which contain sorbitol) all count. If you’re vomiting alongside the diarrhea, take small sips every few minutes rather than waiting until you can keep a full glass down.
What to Eat During Recovery
You’ve probably heard of the BRAT diet: bananas, rice, applesauce, and toast. It’s a reasonable starting point for the first day or two because those foods are bland and easy to digest. But there’s no clinical evidence that restricting yourself to just those four foods speeds recovery, and doing so for more than a couple of days means missing out on the protein and nutrients your body needs to heal.
A better approach is to eat a range of gentle, easy-to-digest foods from the start. Good options include brothy soups, oatmeal, boiled potatoes, crackers, and unsweetened dry cereals. As your stomach settles, add cooked carrots, sweet potatoes (without skin), cooked squash like butternut or pumpkin, avocado, skinless chicken or turkey, fish, and eggs. These give you protein and micronutrients while still being kind to an irritated gut.
Eat smaller meals more frequently rather than three large ones. Your digestive system is working overtime to recover, and smaller portions are easier to process.
Foods and Drinks to Avoid
Some foods actively make diarrhea worse by drawing extra water into your intestines. Sugar alcohols are a major culprit. Sorbitol, mannitol, xylitol, maltitol, and erythritol all have laxative properties. As little as 5 to 20 grams of sorbitol per day can cause gas, bloating, cramps, and urgency, and doses above 20 grams reliably trigger diarrhea.
Sorbitol hides in surprising places. It’s a common ingredient in sugar-free gum, candies, and processed foods, and it occurs naturally in apples, pears, apricots, dates, figs, nectarines, peaches, plums, prunes, and raisins. If you’re chewing several pieces of sugar-free gum a day while dealing with diarrhea, that alone could be prolonging your symptoms.
Also steer clear of dairy (if you notice it worsens symptoms), caffeine, alcohol, fatty or greasy foods, and highly spiced meals. All of these can speed up gut motility or irritate an already inflamed digestive tract.
Over-the-Counter Medications
Loperamide (sold as Imodium) slows down the movement of your intestines, giving them more time to absorb water. The standard approach for adults is to take two tablets or capsules after the first loose stool, then one tablet after each subsequent loose stool. The over-the-counter maximum is four tablets in 24 hours. If you’re taking capsules under a doctor’s direction for chronic diarrhea, the ceiling is higher (up to eight capsules per day), but don’t exceed the package directions on your own.
Loperamide is useful for managing symptoms, but you should not use it if you have bloody stools, a high fever, or a known bacterial infection like C. difficile colitis or dysentery. In those cases, slowing the gut down can trap the pathogen inside and make things worse.
Bismuth subsalicylate (Pepto-Bismol) is the other common option. It reduces inflammation in the gut lining and has mild antimicrobial effects. It can turn your tongue and stool black, which is harmless but surprising if you’re not expecting it. Avoid it if you’re allergic to aspirin, since the two are chemically related.
Probiotics Can Shorten Recovery
Certain probiotic strains help your gut fight off the infection and restore its normal bacterial balance. The yeast-based probiotic Saccharomyces boulardii has the strongest evidence for acute diarrhea. In clinical trials, people taking it recovered in about 3.6 days compared to 4.8 days for those who didn’t, roughly a full day faster. Lactobacillus-based probiotics (often labeled as Lactobacillus GG or LGG) also show benefits, particularly in children.
You can find these as standalone supplements at pharmacies. Look for the specific strain name on the label rather than a generic “probiotic blend,” since the evidence is strain-specific. Start taking them at the onset of symptoms for the best effect.
Treating Diarrhea in Children
Children dehydrate faster than adults, so fluid replacement is even more critical. Oral rehydration solutions are the best choice for kids. Avoid giving young children fruit juice, soda, or sports drinks, all of which can worsen diarrhea due to their sugar content and poor electrolyte balance.
The World Health Organization recommends zinc supplementation for children with acute diarrhea: 20 mg per day for 10 to 14 days, or 10 mg per day for infants under six months. Zinc shortens the duration and severity of the episode and reduces the risk of recurrence in the following months. It’s widely available as a liquid or dissolvable tablet formulated for children.
Continue breastfeeding or formula feeding throughout the illness. The old advice to withhold food has been replaced by evidence that continued feeding supports recovery. Offer age-appropriate foods as the child tolerates them.
When Diarrhea Lasts Longer Than Expected
Acute diarrhea resolves within two weeks. If it persists between two and four weeks, it’s classified as persistent diarrhea. Anything beyond four weeks is chronic diarrhea, which points to an underlying condition like irritable bowel syndrome, inflammatory bowel disease, celiac disease, or a food intolerance rather than a simple infection.
Chronic diarrhea requires investigation rather than just symptom management. Treating the underlying cause is the only way to get lasting relief, and over-the-counter medications become less appropriate the longer symptoms continue.
Signs That Need Medical Attention
Most diarrhea is an inconvenience, not an emergency. But certain symptoms signal something more serious:
- Blood in your stool, whether bright red or dark and tarry
- Fever above 104°F (40°C) in adults, or above 102°F (38.9°C) in children
- Signs of severe dehydration, including confusion, dizziness when standing, no urination for many hours, or cool and clammy skin
- Diarrhea lasting more than two days in adults without improvement, or any bloody or severe diarrhea in infants
- Severe abdominal pain that goes beyond typical cramping
For infants and young children, the threshold for concern is lower. Babies who have no wet diapers for three hours, cry without tears, or seem unusually sleepy or unresponsive need prompt evaluation. Elderly adults are also at higher risk for rapid dehydration and should be monitored more closely.