There is no antiviral medication or cure for norovirus. The illness runs its course in most people within one to three days, and treatment focuses entirely on managing symptoms and preventing dehydration. That said, several over-the-counter options, prescription medications, and practical strategies can make those miserable days more bearable.
Fluids Are the Most Important Treatment
Norovirus causes vomiting and diarrhea that can drain your body of water and essential minerals surprisingly fast. Replacing those lost fluids is the single most important thing you can do. Plain water helps, but it doesn’t replace the sodium and potassium you’re losing. Oral rehydration solutions, available at most pharmacies and grocery stores, are specifically designed for this. They contain a balanced ratio of sodium and glucose that helps your gut absorb water more efficiently.
If you can’t keep fluids down, take small, frequent sips rather than drinking large amounts at once. A few tablespoons every five to ten minutes is easier on a churning stomach than gulping a full glass. Broth, diluted juice, and electrolyte drinks can also work, though purpose-made rehydration solutions are ideal. If you reach the point where you can’t keep anything down for several hours, you’re not urinating, or you feel dizzy and confused, that’s a sign of dehydration severe enough to need IV fluids at an urgent care or emergency room.
Over-the-Counter Medications That Help
Your doctor may recommend two main types of OTC medication: anti-nausea drugs and anti-diarrheal drugs.
For diarrhea, loperamide (sold as Imodium) slows gut motility and reduces the frequency of bowel movements. It also has some fluid-reducing properties in the intestine. It can be particularly useful if you need to travel or function during the illness. However, you should avoid loperamide if you have bloody diarrhea or diarrhea accompanied by a high fever, as these can signal a bacterial infection where slowing the gut down could cause harm. Loperamide is available in liquid form for children but is rarely recommended for kids under six.
Bismuth subsalicylate (Pepto-Bismol) is another option that can ease diarrhea and nausea. It comes with more restrictions, though. It contains a compound related to aspirin, so it’s off-limits if you have an aspirin allergy, kidney problems, or gout, or if you take blood thinners. It’s also not recommended for pregnant women or children under 12, and should be avoided in children and teens with viral infections due to a small risk of Reye’s syndrome.
Prescription Options for Severe Vomiting
When vomiting is so intense that you can’t keep down fluids or oral medication, a doctor can prescribe an anti-nausea medication (commonly ondansetron, known by the brand name Zofran). This is especially useful for children at risk of dehydration. In clinical trials, children who received ondansetron were significantly more likely to stop vomiting within the first hour compared to those given a placebo, and they were about half as likely to need IV rehydration. The medication comes in a dissolving tablet that goes under the tongue, which is helpful when swallowing anything feels impossible.
Ondansetron doesn’t shorten the overall illness or eliminate vomiting entirely after the first day. Its main value is buying your stomach enough calm to get fluids in and avoid a trip to the emergency room for IV hydration.
What to Eat During and After Norovirus
You may have heard of the BRAT diet (bananas, rice, applesauce, toast) as the go-to for stomach bugs. While these foods are gentle on the stomach, the CDC notes that this diet is unnecessarily restrictive and can actually leave you short on the nutrition your body needs to recover. Prolonged gut rest or sticking to only clear fluids for more than 24 hours is not recommended.
The better approach is to return to your normal diet as soon as you can tolerate it. Early refeeding has been shown to decrease illness duration and improve nutritional outcomes. Start with whatever sounds manageable, whether that’s crackers, plain chicken, or soup, and work your way back to regular meals. If something triggers nausea, back off and try again in a few hours. Avoid greasy, very spicy, or heavily sweetened foods until your stomach settles, but don’t force yourself to eat only bland starches if you feel ready for more.
Do Probiotics Help?
Probiotics are frequently marketed for gut recovery, but the evidence for norovirus specifically is weak. Two large clinical trials testing products containing Lactobacillus rhamnosus (one of the most studied probiotic strains) found no benefit for children with acute gastroenteritis. The American Gastroenterological Association concluded there was no value to be gained from those specific products. Other strains or formulations might behave differently, but there’s currently no strong evidence supporting probiotics as a treatment for norovirus.
Preventing Spread While You Recover
Norovirus is extraordinarily contagious, and standard alcohol-based hand sanitizer does not work well against it. Handwashing with soap and water is the only reliable way to remove the virus from your hands. If you’re caring for someone who’s sick, or recovering yourself, wash your hands thoroughly and often.
For contaminated surfaces like bathroom counters, toilet handles, and doorknobs, regular household cleaners aren’t enough. You need a chlorine bleach solution at a concentration of 1,000 to 5,000 parts per million, which works out to roughly 5 to 25 tablespoons of standard household bleach per gallon of water. EPA-registered disinfectants specifically labeled as effective against norovirus also work. Clean any surfaces that may have been exposed to vomit or diarrhea promptly, as the virus can survive on surfaces for days and it takes very few viral particles to infect the next person.
Signs of Dehydration to Watch For
Most healthy adults recover from norovirus without complications, but dehydration is the real danger, particularly for young children, older adults, and people with weakened immune systems. In adults, warning signs include not urinating for many hours, rapid heartbeat, rapid breathing, confusion, or feeling faint. In infants and young children, look for a dry mouth and tongue, crying without tears, no wet diapers for three or more hours, sunken-looking eyes, and unusual sleepiness or irritability. Any of these signs warrant prompt medical attention, as IV fluids may be necessary to catch up on what the body has lost.