When you’re stuck at home with a cold, flu, or other viral illness, the basics matter most: rest as much as possible, stay hydrated, and manage your symptoms so you can sleep comfortably. Most viral infections resolve on their own within 7 to 10 days, and what you do during that window can meaningfully affect how quickly you bounce back.
Sleep Is Your Best Medicine
Your body ramps up its immune activity during deep sleep. During the deepest phase of sleep, your body releases a surge of immune-signaling proteins called cytokines, increases the activity of infection-fighting T cells, and dials down the anti-inflammatory hormones that would normally keep those responses in check. This is essentially your immune system going on the offensive, and it only happens effectively when you’re asleep.
That heavy, drowsy feeling you get when you’re sick isn’t just misery. It’s driven by the same inflammatory signals your immune system produces to fight the infection, and it’s your body’s way of pushing you toward the sleep it needs to clear the pathogen. Don’t fight it. Aim for as much sleep as your body wants, even if that means 10 or 12 hours. Nap during the day without guilt. Keep your room cool, dark, and quiet to help you stay in deeper sleep stages longer.
How to Stay Hydrated When You Feel Awful
Fever, sweating, and mouth breathing all pull water out of your body faster than usual. Plain water works fine for most adults with a typical cold or flu. Sip steadily throughout the day rather than trying to gulp large amounts at once, especially if your stomach is uneasy.
If you’re dealing with vomiting or diarrhea, plain water alone may not be enough. You lose sodium and potassium along with the fluid, and replacing just the water without those electrolytes can actually make things worse. Oral rehydration solutions, which you can find at any pharmacy, are specifically designed with the right balance of sugar and sodium to help your gut absorb water efficiently. The WHO-approved low-osmolarity version has been shown to reduce episodes of vomiting and diarrhea and decrease the need for IV fluids.
Skip the common substitutes. Apple juice, cola, and sports drinks are all much higher in sugar and lower in sodium than a proper rehydration solution. Their high sugar content can actually pull more water into your intestines and worsen diarrhea.
Managing Your Fever
A fever of 100°F (37.8°C) or higher is your immune system deliberately raising your body temperature to create a less hospitable environment for viruses. Fevers below 104°F (40°C) from common viral infections like the flu are generally not harmful and may actually help your body fight the illness more effectively.
That said, fevers make you feel terrible, and if yours is keeping you from sleeping or eating, it’s reasonable to bring it down. Over-the-counter pain relievers that reduce fever are safe for most adults when used as directed. The key safety rule: don’t exceed 4,000 milligrams of acetaminophen in a 24-hour period, and be aware that many combination cold medicines already contain acetaminophen, so check every label to avoid doubling up.
Contact your doctor if your temperature reaches 103°F (39.4°C) or higher, or if a lower fever persists for more than three days.
Soothing a Cough and Sore Throat
Honey is one of the most effective home remedies for a nighttime cough. In a clinical trial published in JAMA Pediatrics, parents rated honey as significantly better than no treatment for cough frequency and sleep quality, while the standard cough suppressant ingredient found in most over-the-counter cough syrups (dextromethorphan) was not statistically better than doing nothing at all. A spoonful of honey before bed, stirred into warm tea or taken straight, coats the throat and calms the cough reflex. Don’t give honey to children under one year old.
Keeping your indoor humidity between 30% and 50% also helps. Dry air irritates inflamed nasal passages and throat tissue, making coughs worse and sleep harder. A cool-mist humidifier in your bedroom can ease that irritation. Clean it daily to prevent mold and bacteria from building up in the water reservoir.
Zinc Lozenges Can Shorten Your Cold
If you catch it early, zinc lozenges are one of the few supplements with solid evidence behind them. A systematic review of randomized controlled trials found that zinc lozenges reduced cold duration by an average of 2.25 days compared to placebo. One study found an even more dramatic difference: 3.9 days for the zinc group versus 10.8 days for the placebo group.
The dosing pattern across successful studies was consistent: one lozenge every two to three hours while awake, typically containing between 9 and 23 milligrams of zinc per lozenge, up to about 6 to 8 lozenges per day. Start within the first 24 hours of symptoms for the best effect. Zinc lozenges can cause nausea on an empty stomach and leave a metallic taste, so take them after eating if your stomach is sensitive.
What to Eat When Nothing Sounds Good
You don’t need to force large meals. Your appetite drops during illness partly because your body is redirecting energy toward immune function. Focus on small, easy-to-digest foods: broth-based soups, toast, bananas, rice, applesauce. Warm liquids like broth and tea do double duty by keeping you hydrated while soothing your throat and loosening nasal congestion.
If you’re vomiting, wait until you can keep clear liquids down for an hour or two before trying solid food. Start with bland, small portions and work your way up.
Keep Your Space Clean
Wipe down frequently touched surfaces like doorknobs, light switches, countertops, and phone screens regularly. This protects anyone you live with and also prevents you from reinfecting yourself with virus particles you’ve deposited around the house. Wash your hands after blowing your nose or coughing, and keep used tissues in a lined trash can you can empty without touching the contents.
If you share a home, try to limit your time in common areas and use a separate bathroom if one is available. Keeping a window cracked or running a fan to improve ventilation helps reduce the concentration of viral particles in the air.
Warning Signs That Need Medical Attention
Most colds and flus are miserable but manageable at home. However, certain symptoms signal that something more serious is happening:
- Difficulty breathing or shortness of breath that goes beyond normal nasal congestion
- Persistent dizziness, confusion, or difficulty staying awake
- Fever of 103°F (39.4°C) or higher, or any fever that keeps returning after seeming to break
- Bluish color to the lips or face, which indicates low oxygen levels
- Symptoms that improve and then suddenly worsen, which can indicate a secondary bacterial infection
In children, watch especially for fast breathing, trouble breathing, refusal to drink fluids, and not being alert or interactive when awake. These all warrant prompt medical evaluation.