Most cases of the flu can be managed at home with rest, fluids, and over-the-counter medications. Healthy adults typically recover within five to seven days, though fatigue and a lingering cough can stretch into a second week. The key is starting the right steps early, both to feel better faster and to avoid complications.
Start Antiviral Treatment Within 48 Hours
Prescription antiviral medications work best when started within two days of your first symptoms. The earlier you begin, the more effectively they shorten fever and overall illness. If you’re in a higher-risk group (adults 65 and older, pregnant women, young children, or anyone with a chronic condition like asthma, diabetes, or heart disease), call your doctor at the first sign of flu symptoms rather than waiting to see if things improve on their own.
For influenza B specifically, one newer antiviral option can cut symptom duration by more than a full day compared to older treatments. Your doctor can determine which medication fits your situation. Even if you’re otherwise healthy, early treatment is worth pursuing if you can get it within that 48-hour window.
Managing Fever and Body Aches
Acetaminophen and ibuprofen are your two main options for bringing down fever and easing the full-body soreness the flu is known for. Acetaminophen works in the brain to reduce pain and fever. Ibuprofen does the same but also reduces inflammation throughout the body, which can help with sore throat swelling and sinus pressure. Both are effective, and you can alternate them if one alone isn’t enough.
Acetaminophen can be taken every four to six hours, with no more than five doses in 24 hours. Ibuprofen is taken every six hours, with a maximum of four doses per day. If you alternate the two, space doses six hours apart and don’t exceed four total doses of either in a day. Check the packaging for the right amount based on your weight, and keep in mind that many combination cold-and-flu products already contain acetaminophen, so read labels carefully to avoid doubling up.
Stay Hydrated, Especially With a Fever
Fever increases how much fluid your body loses through sweat and faster breathing. Vomiting and diarrhea, common with some flu strains, accelerate that loss further. Dehydration makes fatigue, headaches, and dizziness worse, and it’s one of the most preventable complications of the flu.
Water is fine, but drinks with electrolytes do a better job of replacing the minerals you’re losing. Clear broth is especially useful because it provides both electrolytes and a small amount of calories when eating feels impossible. Warm liquids also help loosen congestion and soothe a raw throat. Avoid alcohol and heavy caffeine, both of which pull fluid out of your system. A good rule of thumb: if your urine is dark yellow or you’re going to the bathroom much less than usual, you need to drink more.
Zinc Can Significantly Shorten Your Illness
Zinc supplements have strong evidence behind them for reducing how long cold and flu symptoms last. A meta-analysis published in BMJ Global Health found that zinc supplementation shortened symptom duration by roughly 47% on average. In one trial, people taking zinc recovered in about 2.5 days compared to 7.6 days in the placebo group. Another study saw half of participants become symptom-free in 2.7 days versus 7.5 days without zinc.
The catch is timing: zinc appears most effective when started within the first 24 hours of symptoms. Zinc lozenges or tablets taken every few hours during waking hours are the most commonly studied form. Some people experience nausea from zinc on an empty stomach, so taking it with a small amount of food can help.
Vitamin C has a more modest effect. The same review found it shortened symptom duration by about 9%, which translates to roughly half a day less of feeling sick. It’s not a game-changer on its own, but it’s unlikely to hurt and may offer a small benefit alongside other measures.
Soothing a Persistent Cough
Flu coughs can be relentless, especially at night. Honey performs about as well as common over-the-counter cough suppressants in clinical studies, and it may help you sleep better. A half teaspoon to one teaspoon taken straight or stirred into warm tea is enough. Never give honey to a child under one year old due to the risk of infant botulism.
For congestion that feeds the cough, a saline nasal rinse (using a neti pot or squeeze bottle with distilled or previously boiled water) can flush out mucus and reduce postnasal drip. Keeping the air in your room humidified also helps prevent your airways from drying out overnight, which tends to trigger coughing fits.
How Long You’re Contagious
You can spread the flu to others starting about a day before your symptoms appear and for roughly seven days after symptoms begin. The general guideline for returning to work or school is to wait at least 24 hours after your fever breaks on its own, meaning without the help of fever-reducing medication. If you take ibuprofen in the morning and feel fine, that doesn’t count. Your temperature needs to stay normal for a full day without any medication before you’re in the clear.
While you’re sick, cover coughs and sneezes, wash your hands frequently, and try to stay in a separate room from household members when possible. The flu spreads primarily through respiratory droplets, so even brief close contact can pass it along.
What Recovery Actually Looks Like
The worst of the flu, including high fever, severe body aches, and exhaustion, usually peaks around days two through four. Most people turn a corner by day five and feel substantially better within a week. But “better” doesn’t mean “back to normal.” It’s common to feel run down, easily tired, and mentally foggy for another one to two weeks as your immune system and respiratory tract finish healing.
Pushing yourself back to full activity too soon can prolong that recovery period. Ease back into exercise and demanding work gradually. If your cough, fatigue, or shortness of breath is still worsening after the first week rather than slowly improving, that’s worth a call to your doctor.
Warning Signs That Need Immediate Attention
Most flu cases resolve on their own, but certain symptoms signal that something more serious is happening. In adults, get emergency care if you experience difficulty breathing, persistent chest or abdominal pain, confusion or dizziness that won’t go away, inability to urinate, severe weakness, or seizures. A fever or cough that improves and then suddenly returns or gets worse is also a red flag, as it can indicate a secondary infection like pneumonia.
In children, watch for fast or labored breathing, ribs pulling in visibly with each breath, bluish lips or face, refusal to walk due to muscle pain, or signs of dehydration like no urine for eight hours, a dry mouth, or no tears when crying. A fever above 104°F that doesn’t respond to medication needs prompt medical evaluation. For babies under 12 weeks, any fever at all warrants a call to the doctor.