If you have the flu, the most important things you can do are rest, stay hydrated, and manage your symptoms while your body fights off the virus. Most healthy adults recover within one to two weeks without medical treatment. But acting quickly in the first 48 hours, particularly if you’re in a high-risk group, can shorten your illness and prevent complications.
Get Antiviral Medication Within 48 Hours
Prescription antiviral medication works best when started within 48 hours of your first symptoms. Within that window, antivirals can shorten your fever and overall illness by roughly a day and reduce the risk of complications like pneumonia and ear infections. Even if you’re past the 48-hour mark, there’s some evidence that starting treatment within 72 hours still offers modest benefit, so it’s worth calling your doctor rather than assuming you’ve missed your chance.
Antivirals are especially important if you fall into a higher-risk category (more on that below). If you’re otherwise young and healthy, your doctor may suggest riding it out at home. Either way, making that call early is the single most time-sensitive decision you’ll face.
Stay Hydrated and Eat What You Can
Fever, sweating, and reduced appetite can dehydrate you fast. Women should aim for at least 9 cups of fluid per day and men about 12 cups, and you’ll likely need more than that while sick. Plain water is the best default, but broth, herbal tea, and diluted sports drinks help too. If you’re vomiting or have diarrhea, an oral rehydration solution provides the right balance of electrolytes, sodium, and sugar to help your cells actually absorb the fluid you’re taking in.
You probably won’t feel like eating much, and that’s fine for a day or two. When you can manage food, focus on things that are easy to digest and nutrient-rich. Chicken soup is a genuinely useful choice: it provides hydration, protein, and compounds that help fight inflammation and keep mucus flowing. A good version includes carrots, celery, garlic, fresh ginger, and a squeeze of lemon juice over whole-wheat noodles and shredded chicken in low-sodium broth.
Beyond soup, prioritize fruits and vegetables high in vitamin C (citrus, berries, bell peppers), foods with zinc (beef, seafood, beans, nuts), and probiotic-rich foods like yogurt or kefir that support your immune system. Even small portions help. Sweet potatoes, spinach, eggs, and bananas are all good picks that pack immune-supporting nutrients without being hard on your stomach.
Manage Fever, Pain, and Cough
Over-the-counter fever reducers and pain relievers can make you significantly more comfortable. A fever of 100.4°F (38°C) or higher is typical with the flu. Fever is your immune system’s way of fighting the virus, so treating it is about comfort, not necessity. If your temperature is making you miserable, medication will help. If you feel okay, you can let a mild fever run its course.
For a sore throat and cough, honey is surprisingly effective. Research suggests it may work better than over-the-counter cough suppressants, particularly for nighttime symptoms. Honey coats the throat, reduces irritation, and contains plant compounds with anti-inflammatory and antimicrobial properties. Stir it into warm tea or lemon water for a double-soothing effect, but avoid boiling water, which destroys some of the beneficial compounds. Never give honey to children under 1 year old due to the risk of infant botulism.
Saltwater gargles can also ease throat pain. A humid environment or a hot shower helps loosen congestion. And while it sounds basic, propping yourself up with extra pillows at night makes breathing and coughing easier than lying flat.
Rest More Than You Think You Need To
Your body is redirecting enormous energy toward fighting the virus. The flu hits harder than a common cold, and the fatigue can be profound. Cancel your plans for at least a few days. Pushing through work or exercise doesn’t just slow your recovery; it also increases the chance of complications like a secondary bacterial infection in your lungs.
Sleep as much as your body wants. This isn’t laziness. Your immune system is most active during sleep, and the more rest you get in the first few days, the faster you’ll bounce back.
Know When to Stay Home
You’re most contagious in the first three to four days of illness. At minimum, stay home until you’ve been fever-free for at least 24 hours without using fever-reducing medication. If you still have coughing or sneezing after that point, wearing a mask around others is a reasonable precaution. Wash your hands frequently, avoid sharing cups or utensils, and try to keep your distance from household members when possible.
Who Faces Higher Risk of Complications
Most people recover from the flu without serious problems. But certain groups are more vulnerable to complications like pneumonia, and they should contact a doctor at the first sign of flu symptoms rather than waiting to see how things develop. These groups include:
- Adults 65 and older
- Children under 2 (infants under 6 months face the highest hospitalization rates)
- Pregnant women, including up to two weeks after delivery
- People with chronic conditions like asthma, COPD, diabetes, heart disease, kidney or liver disorders, or sickle cell disease
- People with weakened immune systems from conditions like HIV or cancer, or from medications like chemotherapy or long-term corticosteroids
- People with a BMI of 40 or higher
- People who have had a stroke or have conditions affecting muscle function, lung function, or the ability to cough and clear their airways
- Nursing home residents
If you fall into any of these categories, early antiviral treatment within that 48-hour window is particularly important.
Emergency Warning Signs
Rarely, the flu can become a medical emergency. In adults, seek immediate care for difficulty breathing or shortness of breath, persistent pain or pressure in the chest or abdomen, persistent dizziness or confusion, or seizures. In children, watch for fast or labored breathing, ribs pulling in with each breath, bluish lips or face, chest pain, seizures, or a child who isn’t alert or interacting when awake.
These symptoms suggest the virus has progressed beyond what your body can handle on its own and require urgent evaluation, not a next-day doctor visit.