Loose stools that show up for a day or two usually resolve on their own with simple changes to what you eat and drink. The key steps are staying hydrated, shifting temporarily to bland and binding foods, and identifying whatever triggered the problem in the first place. If loose stools persist beyond four weeks, they cross into what doctors classify as chronic diarrhea, which needs a different level of attention.
Start With Fluids
Loose stools pull water out of your body faster than normal, so replacing that fluid is the single most important thing you can do right away. Water is fine for mild cases, but if you’re going to the bathroom frequently, you’re also losing electrolytes like sodium and potassium. Broth-based soups, diluted fruit juices, and oral rehydration solutions all help replace what’s lost. Sip steadily throughout the day rather than drinking large amounts at once, which can stimulate your gut further.
Avoid coffee, alcohol, and sugary sodas while your stools are loose. Caffeine speeds up your colon, alcohol irritates the gut lining, and high-sugar drinks can pull even more water into your intestines.
What to Eat (and What to Skip)
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, but Harvard Health notes there’s no clinical evidence that restricting yourself to only those four foods works better than a broader bland diet. Brothy soups, oatmeal, boiled potatoes, crackers, and unsweetened dry cereals are all easy to digest and equally gentle on your gut.
Once things start to settle, typically within a day or two, add back more nutritious options: cooked squash, carrots, sweet potatoes without skin, avocado, skinless chicken or turkey, fish, and eggs. These foods provide the protein and nutrients your body needs to recover, while still being gentle enough to avoid a setback.
While your stools are loose, steer clear of:
- Dairy products like milk, cheese, butter, and ice cream
- Fried and greasy foods like french fries, donuts, and chips
- High-fiber roughage like leafy greens, fruit and vegetable skins, popcorn, nuts, seeds, and beans
- Acidic and spicy foods like citrus, tomato sauces, vinegar-based dressings, and hot peppers
- Sugary foods like candy, cakes, cookies, and desserts
Add Soluble Fiber to Firm Things Up
This sounds counterintuitive, since people associate fiber with loosening the bowels. But there are two types, and they do opposite things. Soluble fiber absorbs water and forms a gel-like consistency during digestion, which slows everything down and helps bind loose stool. Insoluble fiber does the reverse: it speeds food through your system and adds bulk that can make things worse when your gut is already irritated.
Good sources of soluble fiber include oatmeal, bananas, white rice, applesauce, and peeled cooked potatoes. These overlap with the bland diet recommendations for a reason. Avoid high-insoluble-fiber foods like whole wheat bran, raw vegetables, and anything with tough skins or seeds until your stools have normalized.
Check for Hidden Triggers
If loose stools keep coming back without an obvious cause like a stomach bug, the culprit may be something you’re consuming regularly without suspecting it. Sugar alcohols are one of the most common overlooked triggers. These are sweeteners found in sugar-free gum, mints, protein bars, diet drinks, and “no sugar added” ice cream. They’re poorly absorbed in the small intestine, so they draw water into the bowel and create a laxative effect. The effect is dose-dependent, meaning a single piece of sugar-free gum might be fine, but chewing through half a pack will likely cause problems. The effect gets worse when multiple types of sugar alcohols are consumed together.
Other frequent offenders include excess caffeine, high-fructose foods like apple juice or honey in large amounts, dairy (if you have even mild lactose intolerance), and magnesium supplements. Keeping a simple food diary for a week can help you spot patterns you’d otherwise miss.
Over-the-Counter Options
Two widely available medications can help when you need short-term relief. Loperamide (sold as Imodium A-D) slows the movement of your intestines, giving your body more time to absorb water from stool. The maximum over-the-counter dose for adults is 8 mg per day. Don’t exceed that limit; the FDA has warned that high doses can cause serious heart problems.
Bismuth subsalicylate (the active ingredient in Pepto-Bismol) coats the lining of your stomach and intestines and can reduce the frequency of loose stools. It’s generally well tolerated, but it contains a compound related to aspirin, so avoid it if you have a salicylate or aspirin allergy. It should also not be given to children or teenagers recovering from the flu or chickenpox due to a small risk of Reye’s syndrome.
Both medications are meant for short-term use. If you find yourself relying on them for more than a couple of days, that’s a signal to look deeper into the cause.
Probiotics That May Help
Not all probiotics are the same when it comes to loose stools. The strain with the strongest evidence is Saccharomyces boulardii, a beneficial yeast (not a bacteria) that has been shown to reduce the duration of acute diarrhea by roughly 1.5 days in clinical trials. It also significantly reduced the number of daily bowel movements compared to placebo. You can find it sold under brand names like Florastor, typically in 250 mg capsules. It’s particularly useful during and after a course of antibiotics, which commonly disrupt gut bacteria and cause loose stools as a side effect.
How Long Recovery Takes
Most cases of loose stools from a viral or bacterial trigger are self-limited, meaning they resolve on their own within a few days to two weeks. Post-infection, your gut lining needs time to heal, and it’s normal for stool consistency to fluctuate for a week or so even after the worst symptoms pass. Eating bland, easy-to-digest foods during this window gives your intestines the best chance to recover without repeated irritation.
If loose stools last longer than 14 days, doctors consider them persistent. Beyond four weeks, it qualifies as chronic diarrhea, which can have causes ranging from food intolerances and irritable bowel syndrome to thyroid disorders and inflammatory bowel disease.
Signs That Need Medical Attention
Most episodes of loose stools are harmless, but certain symptoms point to something more serious. Seek medical evaluation if you notice blood in your stool, unintentional weight loss, or signs of dehydration like dizziness, dark urine, rapid heartbeat, or confusion. Loose stools that wake you up at night are also a red flag, since functional gut issues like IBS almost never cause nocturnal symptoms. A new onset of persistent loose stools after age 45, especially combined with weight loss or a family history of bowel cancer, warrants prompt evaluation.