What to Feed Baby After a Stomach Bug
The short answer
After a stomach bug, resume your baby's normal diet as tolerated rather than restricting to bland foods. Breast milk and formula are ideal for recovery. The old BRAT diet (bananas, rice, applesauce, toast) is no longer specifically recommended because it is too restrictive in nutrition. Offer whatever your baby will eat, in small frequent amounts, focusing on hydration first.
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By Age
What to expect by age
Continue breastfeeding or formula feeding as the primary recovery diet. Breast milk is ideal because it contains immune factors that help fight the infection. If your baby is vomiting, offer smaller, more frequent feeds. Oral rehydration solution can supplement if dehydration is a concern, but should not replace milk feeds.
Resume normal breast milk or formula as soon as vomiting subsides. There is no need to dilute formula during recovery. If your baby had just started solids, you can pause them temporarily until the acute illness resolves and then reintroduce. Focus on maintaining milk feeds for hydration and nutrition.
Once vomiting stops, offer breast milk or formula first, then reintroduce regular solid foods as tolerated. Starchy foods (bananas, rice cereal, potatoes), protein (chicken, yogurt), and easily digested fruits are good choices. Avoid high-sugar foods and juice. Small, frequent meals are better than large ones.
Offer whatever your toddler will eat from their normal diet. Good recovery foods include crackers, toast, rice, bananas, applesauce, chicken soup, and yogurt. Avoid fatty, fried, or heavily sweetened foods initially. Full appetite typically returns within 3 to 5 days of recovery. Temporary dairy avoidance may help if diarrhea persists.
What Should You Do?
When to take action
- Decreased appetite for 2 to 5 days after a stomach bug that gradually improves
- Preference for bland or simple foods during recovery
- Small amounts eaten at first, building back to normal portions over days
- Your baby refuses to eat for more than 3 days after vomiting has stopped
- You are unsure how to safely reintroduce foods after a prolonged illness
- Diarrhea persists more than a week after the illness despite dietary modifications
- Your baby cannot tolerate any oral intake and shows signs of dehydration
- Weight loss during or after the illness is significant
- Vomiting returns when food is reintroduced, especially if it is bilious
Sources
Related Resources
Trust your instincts. If something feels wrong, reach out to your pediatrician.
Worrying about your baby means you care. That is a good thing.
Related Digestive Concerns
Stomach Bug Timeline in Baby
A typical stomach virus (gastroenteritis) in babies lasts 1 to 3 days for vomiting and 5 to 7 days for diarrhea, though some viruses can cause diarrhea lasting up to 2 weeks. The most important thing is to maintain hydration during this time. Your baby is usually most contagious in the first few days of symptoms.
Repeated Vomiting and Dehydration Risk in Baby
Repeated vomiting puts babies at risk of dehydration more quickly than older children because of their smaller fluid reserves. The key is offering small, frequent sips of fluid (breast milk, formula, or oral rehydration solution) rather than large feeds. Signs of dehydration include fewer wet diapers, dry mouth, sunken fontanelle, and lethargy.
Temporary Lactose Intolerance After Illness
Temporary (secondary) lactose intolerance can occur after a stomach virus because the infection damages the intestinal lining where lactase enzyme is produced. This typically causes watery diarrhea, gas, and bloating when consuming milk or lactose-containing formula. It usually resolves within 2 to 6 weeks as the gut heals. Most babies do not need to permanently avoid lactose.
My Baby's Belly Looks Swollen
A rounded, slightly protruding belly is completely normal in babies and toddlers due to immature abdominal muscles and their proportionally larger organs. However, if the belly becomes suddenly swollen, feels hard and tight, or is accompanied by pain, vomiting, or changes in bowel movements, it needs medical evaluation as it could signal gas buildup, constipation, or rarely, something more serious.
My Baby Has an Anal Fissure (Blood When Pooping)
A small streak of bright red blood on the surface of your baby's stool or on the diaper is most commonly caused by an anal fissure, which is a tiny tear in the skin around the anus from passing hard stool. Anal fissures are very common in babies and toddlers and usually heal on their own with simple measures like keeping stools soft. While this is rarely serious, any blood in your baby's stool should be mentioned to your pediatrician.
Tummy Massage for Baby Gas
Gentle abdominal massage can help relieve gas and discomfort in babies by encouraging gas to move through the intestines. The technique involves gentle clockwise circular motions on the belly (following the direction of the digestive tract), the "I Love U" stroke pattern, and gentle knee-to-tummy movements. Massage also provides comforting touch that can soothe a fussy baby.