If you have norovirus, the most important thing you can do is stay hydrated. There is no medication that kills the virus. Most people recover fully within one to three days without treatment, but those days can be rough, with waves of vomiting and diarrhea that drain your body of fluids fast. Your job is to replace what you’re losing, eat when you can, and avoid spreading it to everyone around you.
How to Stay Hydrated During Active Symptoms
Dehydration is the main danger of norovirus, especially for young children and older adults. When you’re vomiting frequently, drinking a full glass of water feels impossible and will likely come right back up. Instead, sip small amounts of clear liquids: water, broth, sports drinks, or diluted fruit juice. Take a few sips every few minutes rather than gulping.
Oral rehydration solutions like Pedialyte work better than plain water because they replace both fluids and electrolytes (the salts your body loses through vomiting and diarrhea). These are especially important for children, older adults, and anyone with a weakened immune system. If you don’t have a commercial product on hand, you can make a basic version at home using the World Health Organization’s recipe: about 4 cups of water, half a teaspoon of salt, and 2 tablespoons of sugar. Eating saltine crackers can also help replace electrolytes between sips.
Avoid alcohol, coffee, and sugary sodas. These can make diarrhea worse and pull more water out of your system.
What to Eat and When
You don’t need to force yourself to eat while you’re actively vomiting. Once the nausea starts to ease, typically within the first 12 to 24 hours, you can begin with small amounts of bland, soft foods. Think plain rice, toast, applesauce, or bananas. Your stomach handles smaller meals better than large ones, so eat light and frequently rather than sitting down to a full plate.
As you start feeling more stable, add foods with a bit more nutritional value: scrambled eggs, skinless chicken or turkey, and cooked vegetables. Your body needs those nutrients to recover, so don’t stay on crackers and toast longer than necessary. Just take it slowly. If a food makes your stomach turn, set it aside and try again later. Greasy, spicy, or dairy-heavy foods are the most likely to cause trouble in the first day or two after symptoms ease.
The Symptom Timeline
Norovirus symptoms typically appear 12 to 48 hours after exposure. The illness hits fast: nausea, vomiting, watery diarrhea, and stomach cramps often arrive within the same few hours. Some people also get a low-grade fever, headache, or body aches. The worst of it usually lasts one to three days, with the most intense vomiting concentrated in the first 24 hours.
By day two or three, most people notice a clear improvement. Appetite returns gradually, and energy comes back over the following few days. Full recovery without any medical treatment is the norm for otherwise healthy adults and children.
Signs You Need Medical Help
Most norovirus cases resolve at home, but dehydration can become dangerous if you can’t keep any fluids down for an extended period. Watch for these warning signs in yourself or a family member:
- Dark urine or very little urine output
- Dizziness or lightheadedness when standing
- Dry mouth, dry lips, or no tears when crying (in children)
- Fewer than six wet diapers per day in infants, or no wet diapers for eight hours in toddlers
Moderate to severe dehydration sometimes requires IV fluids in a hospital or urgent care setting. Infants, elderly adults, and people with compromised immune systems are at the highest risk and should be watched more closely.
How to Avoid Spreading It
Norovirus is extraordinarily contagious, and here’s the detail most people don’t know: you can still spread the virus for two weeks or more after you feel completely better. That means the precautions shouldn’t stop when your symptoms do.
Wash your hands with soap and water thoroughly and often, especially after using the bathroom and before touching food. This is one of the rare situations where soap and water genuinely matters more than hand sanitizer. Alcohol-based sanitizers are not reliably effective against norovirus because the virus lacks the outer coating that alcohol disrupts. Soap and friction physically remove the virus from your skin in a way that sanitizer cannot.
Stay home from work, school, or food preparation for at least two days after your last episode of vomiting or diarrhea. If you work in food service, healthcare, or childcare, the stakes for returning too early are especially high.
Cleaning Contaminated Surfaces
Norovirus survives on countertops, doorknobs, and bathroom surfaces for days. Standard household cleaners and simple wiping are not enough. You need a chlorine bleach solution: mix 5 to 25 tablespoons of regular household bleach (the kind with 5% to 8% sodium hypochlorite) into one gallon of water. That creates a concentration strong enough to kill the virus. Alternatively, look for an EPA-registered disinfectant that specifically lists norovirus on its label.
Focus on bathrooms, kitchen surfaces, light switches, faucet handles, and any surface the sick person touched. If someone vomited or had diarrhea outside the toilet, clean the area with paper towels first (wearing gloves), then disinfect with the bleach solution. Wash any contaminated clothing or bedding on the hottest setting your machine allows, and dry on high heat. Norovirus particles can become airborne briefly when someone vomits, so cleaning the surrounding area, not just the direct spill, matters.
What Not to Bother With
There is no antiviral medication for norovirus. Antibiotics do nothing because this is a virus, not a bacterial infection. Anti-diarrheal medications like loperamide may reduce trips to the bathroom, but they won’t shorten the illness and are generally not recommended for children. Anti-nausea medications are sometimes helpful for adults who truly cannot keep any fluids down, but for most people, the vomiting resolves on its own within a day.
The core strategy is simple and low-tech: sip fluids constantly, rest, eat bland foods as soon as you can tolerate them, and keep your hands and surfaces clean so nobody else in your household goes through the same miserable few days.