The most important thing to give a 1-year-old with diarrhea is fluids, followed by their normal diet. Most cases of toddler diarrhea resolve on their own within a few days, and your main job is to prevent dehydration while keeping your child nourished. Over-the-counter anti-diarrhea medications are not safe for children under 2.
Fluids Come First
Dehydration is the real danger with diarrhea in young children, not the diarrhea itself. If your child is breastfeeding, continue nursing and offer the breast more frequently in shorter sessions. If your child drinks formula, keep mixing it the normal way and offer smaller amounts more often throughout the day.
For mild diarrhea (two to five watery stools a day), extra breast milk, formula, or water is usually enough. If your child shows signs of moderate dehydration, like fewer wet diapers than usual or a dry mouth, an oral rehydration solution (sold as Pedialyte or store-brand equivalents) replaces both fluids and the electrolytes lost through watery stool. The WHO guideline for a child between 12 and 23 months is 600 to 800 ml of rehydration solution over the first four hours, given in small, frequent sips.
Avoid fruit juice and sugary drinks. The sugar in juice can actually pull more water into the intestines and make diarrhea worse. Plain water is fine in small amounts alongside breast milk or formula, but it doesn’t replace lost electrolytes the way a rehydration solution does.
Keep Feeding Their Normal Diet
You may have heard of the BRAT diet (bananas, rice, applesauce, toast) as a go-to for sick kids. The American Academy of Pediatrics no longer recommends it because it’s too restrictive and doesn’t give your child the calories and nutrients they need to recover. Multiple studies have shown that continuing a child’s regular diet actually shortens the duration of diarrhea.
So if your 1-year-old normally eats scrambled eggs, pasta, chicken, yogurt, bananas, or oatmeal, keep offering those foods. You don’t need to limit them to bland starches. Smaller, more frequent meals tend to be easier on an upset stomach than three larger ones. If your child refuses food for a meal or two, that’s normal. Focus on fluids and try again at the next meal.
A few things are worth skipping temporarily. Foods sweetened with sorbitol or xylitol (common in some toddler snacks and gummy vitamins) can loosen stools further. Fruits packed in heavy syrup add unnecessary sugar. Stick to whole foods your child already knows and tolerates.
Probiotics Can Help Modestly
Certain probiotic strains have been shown to shorten acute diarrhea in infants and young children by roughly one day. The strains with the most evidence behind them are Lactobacillus GG (often labeled LGG) and Saccharomyces boulardii, a beneficial yeast. The benefit is most pronounced with diarrhea caused by rotavirus, which is one of the most common culprits in young children.
Probiotics come in powder or drop forms designed for infants and toddlers. They’re not a cure, but if you’re looking for something beyond fluids and food, they’re one of the few supplements with solid evidence in this age group. Look for products that list a specific strain on the label rather than a generic “probiotic blend.”
Zinc Supplementation
The World Health Organization recommends 20 mg of zinc daily for 10 to 14 days alongside oral rehydration for children with acute diarrhea. This guideline is especially relevant in developing countries where zinc deficiency is common, but the evidence applies broadly. One caveat: at the 20 mg dose, some children experience increased vomiting. If you’re considering zinc, it’s worth discussing with your pediatrician to weigh the benefit against that side effect for your child’s specific situation.
What Not to Give
Do not give a 1-year-old any over-the-counter anti-diarrhea medication. Loperamide (the active ingredient in Imodium) is not recommended for children under 2. Bismuth subsalicylate (found in Pepto-Bismol) is also off-limits for young children. These medications can cause serious side effects in toddlers, and diarrhea in this age group almost always resolves without them.
Signs of Dehydration to Watch For
Most toddler diarrhea runs its course in three to seven days. While you’re managing it at home, watch for these signs that your child needs medical attention:
- No wet diaper for three hours or longer, which signals the kidneys aren’t getting enough fluid
- No tears when crying
- Sunken eyes, cheeks, or the soft spot on top of the skull
- Blood or mucus in the stool
- Fever that persists beyond a day or two, or a high fever above 102°F
- Stomach pain that seems severe or doesn’t let up between bowel movements
A child who hasn’t urinated for six hours or who seems unusually sleepy, floppy, or unresponsive needs prompt medical evaluation. Trust your instincts. You know your child’s normal behavior, and a noticeable change in energy or alertness is worth a call to your pediatrician even if you’re not sure it qualifies as an emergency.