The most important thing to give a 1-year-old with diarrhea is fluid. Oral rehydration solution (ORS) is the gold standard: offer 50 to 100 ml after each loose stool, which works out to roughly 500 ml over the course of a day. Beyond fluids, continuing your child’s normal diet, keeping up breastfeeding or formula, and considering zinc supplementation will do far more than any restrictive diet or medication.
Why Oral Rehydration Solution Comes First
Diarrhea pulls water and electrolytes out of your child’s body fast. Plain water doesn’t replace the lost sodium and potassium effectively, and sugary drinks can actually make diarrhea worse by drawing more water into the intestines. ORS, available at any pharmacy under brands like Pedialyte, contains a precise balance of salts and glucose designed to maximize absorption.
Give 50 to 100 ml (roughly 2 to 3.5 ounces) after every loose stool. If your child resists drinking from a cup, try offering small sips frequently with a spoon or syringe. You don’t need to force large amounts at once. Small, steady volumes are easier on the stomach and less likely to come back up.
Keep Feeding Normal Food
You may have heard of the BRAT diet (bananas, rice, applesauce, toast), but the American Academy of Pediatrics, the CDC, and the WHO all recommend against it. Restrictive diets during diarrhea are low in calories, fat, and essential nutrients. Research from the University of Virginia found that relying on a single restrictive diet like BRAT can actually impair nutritional recovery and lead to malnutrition in severe cases.
Instead, return to your child’s regular, age-appropriate foods as soon as they’re rehydrated. Soft fruits, vegetables, rice, pasta, lean meats, yogurt, and bread are all fine. Offer smaller meals more frequently if your child’s appetite is reduced. The goal is to keep calories and nutrients coming in so the gut can repair itself. Many children eat less during a bout of diarrhea, and that’s normal, but don’t withhold food thinking their stomach “needs a rest.”
Continue Breastfeeding or Formula
If you’re still breastfeeding, keep going. Breast milk provides fluids, calories, and immune factors that help fight infection. There’s no reason to stop or reduce nursing during diarrhea.
For formula-fed babies, continue with your usual formula in most cases. A severe or prolonged episode of diarrhea can temporarily reduce the gut’s ability to digest lactose, a condition called secondary lactose intolerance. If diarrhea drags on for more than a week or seems to get worse with formula feedings, your pediatrician may suggest a temporary switch to a lactose-free formula until the gut heals.
Zinc Can Shorten the Episode
The World Health Organization recommends giving children with diarrhea 20 mg of zinc per day for 10 to 14 days. Zinc helps restore the intestinal lining and supports immune function. Studies show it reduces both the severity and duration of diarrheal episodes. Zinc supplements for children are available as dissolvable tablets or syrups. This recommendation applies to children six months and older. For infants under six months, the dose is 10 mg per day.
Probiotics May Help Recovery
One specific probiotic strain, Lactobacillus rhamnosus GG (often labeled LGG), has solid evidence behind it for childhood diarrhea. A meta-analysis of seven trials involving 876 infants found that LGG reduced diarrhea duration by about one day on average. Cincinnati Children’s Hospital recommends starting it as early as possible at a dose of at least 10 billion colony-forming units (CFU) per day for five to seven days.
Look for products that specifically list Lactobacillus rhamnosus GG on the label and state the CFU count. Not all probiotic products contain enough live organisms to be effective, and other strains don’t have the same level of evidence for diarrhea in young children.
Drinks and Foods to Avoid
Sugary liquids are the biggest offender. Fruit juice, soda, sports drinks, and gelatin desserts all contain high concentrations of simple sugars that increase the osmotic load in the intestines, pulling in more water and worsening diarrhea. The CDC specifically warns against offering substantial amounts of these during gastroenteritis. Even diluted apple juice, a common home remedy, can be problematic if given in large volumes.
Stick to ORS for hydration and water or breast milk for thirst. If your child wants something flavored, small amounts of broth can work, though ORS remains the best option.
Do Not Give Anti-Diarrheal Medications
Over-the-counter anti-diarrheal drugs like loperamide (Imodium) should never be given to a child under 2 years old. The Mayo Clinic states that safety and efficacy have not been established in this age group. Bismuth subsalicylate (Pepto-Bismol) also carries risks for young children, including Reye’s syndrome due to its salicylate content. These medications work by slowing gut motility, which in a young child can trap the infectious organisms inside and make things worse.
Diarrhea in a 1-year-old is the body’s way of flushing out an infection. The treatment isn’t to stop the diarrhea itself but to replace what’s being lost and support recovery with nutrition.
Signs Your Child Needs Medical Attention
Most episodes of toddler diarrhea resolve within a few days, but dehydration can become dangerous quickly at this age. Four signs reliably predict meaningful dehydration: skin that takes more than two seconds to return to normal color when you press on a fingertip, no tears when crying, dry mouth and lips, and a generally ill or listless appearance. If two or more of these are present, your child likely has a fluid deficit that needs professional evaluation.
Also watch diaper output. Fewer than six wet diapers in 24 hours (or noticeably less urine than usual), sunken eyes, or a sunken soft spot on the head all warrant a call to your pediatrician. Bloody stools, a fever above 102°F that won’t come down, or diarrhea lasting more than a week are additional reasons to seek care. If your child is still producing tears, drinking fluids, and wetting diapers normally, the chances of significant dehydration are low.