Most diarrhea clears up on its own within a few days, but you can speed recovery and feel better faster with the right combination of fluids, food choices, and over-the-counter options. Acute diarrhea, the most common type, typically lasts less than a week. What you do in the first 24 to 48 hours matters most.
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. Drink water throughout the day, but plain water alone isn’t enough if you’re losing a lot of fluid. Oral rehydration solutions (sold at any pharmacy) contain the right balance of salt, sugar, and potassium to help your intestines actually absorb the water you’re drinking. Broth, diluted fruit juice, and coconut water also work in a pinch.
Avoid coffee, alcohol, and sugary sodas. Caffeine stimulates your gut, alcohol dehydrates you further, and drinks with high sugar content can pull more water into your intestines and make things worse. If your urine is dark yellow, you’re behind on fluids.
What to Eat (and What to Skip)
You may have heard of the BRAT diet: bananas, rice, applesauce, and toast. It’s been a go-to recommendation for decades, but no clinical trials have ever confirmed it works. In fact, research from the University of Virginia School of Medicine found that returning to a normal, balanced diet right after rehydrating leads to lower stool output, shorter illness, and better nutritional recovery compared to restrictive approaches like BRAT. Sticking to only bland, starchy foods can actually delay your recovery by depriving your body of the protein, fat, and micronutrients it needs to heal.
That said, some foods are easier on an irritated gut than others. Plain rice, boiled potatoes, lean chicken, eggs, and cooked vegetables are all good choices. Avoid greasy, fried, or heavily spiced foods for a day or two, along with dairy if it seems to make things worse. The key is to eat soon and eat a variety, not to starve your gut into submission.
Over-the-Counter Options
Two common medications can help. Loperamide (the active ingredient in Imodium) slows intestinal contractions, giving your body more time to absorb water. It’s effective for garden-variety diarrhea and works within an hour or two. Bismuth subsalicylate (Pepto-Bismol) coats the lining of your intestines and has mild antibacterial properties. It tends to work more gradually.
One important caveat: don’t use loperamide if you have a high fever or blood in your stool. In those cases, your body may be trying to flush out a bacterial infection, and slowing that process down can do more harm than good.
Probiotics That Actually Help
Not all probiotics are equally useful for diarrhea. The strain with the strongest evidence is Lactobacillus rhamnosus GG, which reduced the duration of acute diarrhea by roughly 19 hours in a randomized controlled trial comparing it against a control group. Saccharomyces boulardii, a beneficial yeast, is another widely recommended option, though evidence for it is less consistent. Look for products that list specific strain names on the label, not just the genus. You can find both in capsule or powder form at most pharmacies.
Probiotics work best when started early in the illness. They help restore the balance of gut bacteria and may reduce the severity and length of symptoms, particularly for diarrhea caused by viruses or antibiotics.
Herbal Remedies Worth Trying
Chamomile tea has some evidence behind it, particularly for people with recurring diarrhea. In a study of patients with diarrhea-predominant irritable bowel syndrome, chamomile extract taken twice daily reduced daily bowel movements from an average of 3.4 to 1.3 after four weeks. Even more striking, 95% of participants who started with watery stools had normal stool consistency by the end of treatment. Chamomile acts as a mild antispasmodic, relaxing the muscles in your intestinal wall.
Ginger tea may also ease cramping and nausea that often accompany diarrhea. Neither remedy is a replacement for rehydration, but sipping warm tea can help with fluid intake while offering some gut-calming benefits.
Signs You Need Medical Attention
Most diarrhea resolves without any medical intervention, but certain symptoms signal something more serious. Get evaluated if you notice:
- Blood or pus in your stool
- High fever
- Six or more loose stools per day
- Symptoms lasting more than two weeks (this crosses from acute into persistent diarrhea, which may need testing)
- Signs of dehydration: extreme thirst, dark urine, dizziness, urinating much less than usual, or skin that stays pinched when you pull it up and release it
For infants and young children, the thresholds are lower. No wet diapers for three hours or more, no tears when crying, a sunken soft spot on the skull, or any fever in an infant warrants prompt medical attention. Children with diarrhea also benefit from zinc supplementation. The World Health Organization recommends 20 mg of zinc daily for 10 to 14 days for children over six months, and 10 mg daily for younger infants.
A Quick Recovery Plan
Putting it all together, here’s what the first couple of days look like. As soon as diarrhea starts, focus on fluids with electrolytes. Eat a balanced meal as soon as you feel able to, favoring easy-to-digest foods but not limiting yourself to just toast and bananas. Take loperamide if you need symptom relief and don’t have a fever or bloody stool. Start a probiotic containing Lactobacillus rhamnosus GG or Saccharomyces boulardii. Sip chamomile or ginger tea between meals.
Most people feel noticeably better within 48 hours using this approach. If diarrhea stretches past a week without improvement, or if it keeps coming back, that’s worth investigating with a healthcare provider to rule out infections, food intolerances, or conditions like IBS or inflammatory bowel disease.