How to Treat Stomach Flu

Stomach flu (viral gastroenteritis) causes vomiting and diarrhea that can leave you feeling miserable. The good news is that most people recover at home within a few days. There's no specific cure, but the right care can help you feel better faster and avoid complications like dehydration.

Stay Hydrated

Replacing lost fluids is the most important part of treating stomach flu. When you're vomiting or have diarrhea, your body loses water and electrolytes quickly. Take small sips of water, clear broths, or sports drinks throughout the day. Avoid sugary drinks like soda and fruit juice—they can make diarrhea worse.

For children, use oral rehydration solutions like Pedialyte instead of plain water. These drinks replace electrolytes that kids lose more easily than adults. Continue breastfeeding or formula feeding infants as normal.

What to Eat

When your stomach settles, start with bland, easy-to-digest foods. Crackers, toast, bananas, rice, and applesauce are gentle choices. Eat small amounts and see how you feel. Avoid fatty, spicy, or dairy foods until you've fully recovered. Most experts now say you can return to your normal diet as soon as you feel ready—a restricted diet doesn't help you heal faster.

Rest and Recover

Your body needs energy to fight off the virus. Get plenty of sleep and take it easy for a few days. Stay home until at least 48 hours after your symptoms stop—you're still contagious even when you start feeling better.

Over-the-Counter Medications

Adults can take loperamide (Imodium) or bismuth subsalicylate (Pepto-Bismol) to help with diarrhea. However, don't use these if you have a fever or bloody stool—these may be signs of a bacterial infection that needs different treatment. These medications are not safe for children without a doctor's guidance.

When to See a Doctor

Most stomach flu cases don't need medical care. However, see a doctor if symptoms last more than 4 days, you have a high fever (over 102°F), you notice blood in your stool, or you show signs of dehydration like dark urine, dizziness, or extreme thirst. Infants, elderly adults, and people with weakened immune systems should seek care early.