There is no antiviral medication or cure for norovirus. Treatment focuses entirely on replacing the fluids and electrolytes your body loses through vomiting and diarrhea. The good news: most people recover fully within one to three days without medical intervention.
Hydration Is the Core Treatment
The biggest risk from norovirus isn’t the virus itself but the dehydration that comes from hours of vomiting and diarrhea. Replacing lost fluid is the single most important thing you can do. Take small, frequent sips of water or suck on ice chips, even if you can’t keep food down. Broth, popsicles, diluted fruit juice (half water, half juice), and weak decaffeinated tea all work well.
Oral rehydration solutions like Pedialyte or Oralyte are better choices than sports drinks like Gatorade, because they contain the right balance of sugar, sodium, and other minerals to actually correct dehydration rather than just replace water. Sports drinks have too much sugar and not enough sodium for someone who’s actively losing fluids through illness.
If you can’t keep fluids down at all, or if dehydration becomes severe, you may need intravenous fluids at a hospital or urgent care. Watch for these signs of dehydration:
- Urinating much less than usual
- Dry mouth and throat
- Dizziness when standing up
- In children: crying with few or no tears, or unusual sleepiness and fussiness
What to Eat During Recovery
The classic BRAT diet (bananas, rice, applesauce, toast) has been recommended for decades, though no studies have actually compared it to other approaches. These bland, low-fiber foods are easy on an irritated stomach, and it’s reasonable to follow this pattern for a day or two. But you don’t need to limit yourself to just those four foods. Brothy soups, oatmeal, boiled potatoes, crackers, and unsweetened dry cereals are equally gentle options.
Once the worst has passed and your stomach starts to settle, gradually add more nutritious foods: cooked squash, carrots, sweet potatoes without skin, avocado, skinless chicken or turkey, fish, and eggs. Your body needs calories and nutrients to recover, so broadening your diet as soon as you can tolerate it helps.
During the acute phase, avoid anything that’s likely to make symptoms worse:
- Dairy products (milk, yogurt, cheese, ice cream)
- Fried or greasy foods
- Sugary foods and desserts
- Acidic foods like citrus, tomato sauce, and vinegar-based dishes
- Spicy foods
- Alcohol and caffeinated drinks
- High-fiber foods like leafy greens, nuts, seeds, beans, and fruit skins
Medications That May Help
No prescription or over-the-counter drug treats norovirus directly. However, a few medications can manage symptoms while you ride it out.
Anti-nausea medication that blocks vomiting can be prescribed by a doctor, particularly for children who are vomiting so frequently they can’t stay hydrated. This is commonly used in emergency departments for kids with gastroenteritis to help them tolerate oral fluids and avoid an IV.
For adults, over-the-counter anti-diarrheal products containing loperamide (Imodium) or bismuth subsalicylate (Pepto-Bismol) can reduce the frequency of diarrhea. However, do not take these if you have a fever or bloody diarrhea, which could signal a bacterial infection rather than norovirus. Children should not take store-bought anti-diarrheal medications unless specifically directed by their doctor, because these drugs can make it harder for a child’s body to clear the virus.
How Long Symptoms Last
Symptoms typically begin 12 to 48 hours after exposure. The acute phase of vomiting and diarrhea lasts one to three days for most people, though it can stretch longer in young children, older adults, and anyone with a weakened immune system.
One detail that catches many people off guard: you continue to shed the virus in your stool for weeks after you feel better. In people with underlying health conditions, shedding can last months. This means you can still spread norovirus to others even when your symptoms are completely gone, which is why hand hygiene matters well into recovery.
Preventing Spread at Home
Norovirus is extraordinarily contagious, and standard cleaning won’t eliminate it. Alcohol-based hand sanitizers are not effective against norovirus. Wash your hands thoroughly with soap and water, especially after using the bathroom and before handling food.
For surfaces that may have been contaminated (bathrooms, countertops, doorknobs), use a bleach solution: 5 to 25 tablespoons of standard household bleach per gallon of water. You can also use an EPA-registered disinfectant specifically labeled as effective against norovirus. Wash any contaminated clothing or linens on the hottest appropriate setting and dry them thoroughly.
Who Faces the Highest Risk
Norovirus is unpleasant for everyone, but dehydration can become dangerous quickly in certain groups. Young children, older adults, pregnant people, and those with chronic illnesses or compromised immune systems are most vulnerable. For these groups, the threshold for seeking medical care should be lower. If someone in a high-risk group can’t keep fluids down for more than a few hours, or shows any signs of dehydration, getting medical attention early can prevent a simple illness from becoming a serious one.