When you’re sick with a cold, flu, or stomach bug, a handful of straightforward strategies make the biggest difference: staying hydrated, sleeping as much as possible, eating simple foods, and using the right over-the-counter medications to manage your symptoms. None of these will cure a virus, but they support your immune system and help you feel less miserable while your body does the hard work of fighting off the infection.
Sleep Is Your Immune System’s Best Tool
Rest isn’t just about feeling less tired. Sleep directly powers the immune response your body needs to clear an infection. During deep sleep, your body shifts its immune activity toward a pattern that favors fighting viruses and bacteria. Immune cells move out of your bloodstream and into your lymph nodes, where they’re more likely to encounter the pathogen and mount a defense. At the same time, sleep lowers cortisol (a hormone that dampens immune activity) and raises other hormones that support the production of virus-fighting cells.
Sleep deprivation does the opposite. It blunts your body’s ability to produce the specific immune cells needed to fight infection and shifts your immune profile away from the aggressive, pathogen-clearing mode. Animal studies have shown that sleep-deprived subjects literally fail to control infections that well-rested subjects recover from. The takeaway is simple: cancel your plans, stay in bed, and let yourself sleep as much as your body wants. This is the single most productive thing you can do.
Staying Hydrated
You lose more fluid than usual when you’re sick, especially if you have a fever, are sweating, vomiting, or dealing with diarrhea. Replacing that fluid keeps your mucus thinner and easier to clear, prevents headaches, and supports normal organ function while your body is under stress. Water, broth, herbal tea, and diluted juice all count. If you’re vomiting or have diarrhea, drinks with electrolytes (like oral rehydration solutions or sports drinks) help replace the sodium and potassium you’re losing.
Interestingly, the common advice to “push fluids” beyond what you’d normally drink doesn’t have strong clinical evidence behind it. A Cochrane review found no randomized controlled trials supporting or opposing the recommendation to drink extra fluids during respiratory infections. The practical goal is to avoid dehydration rather than to flood your system. Drink enough that your urine stays a pale yellow, and sip steadily throughout the day rather than forcing large amounts at once.
Over-the-Counter Pain and Fever Relief
For fever, body aches, sore throat, and headache, two medications cover most of what you need: acetaminophen (Tylenol) and ibuprofen (Advil, Motrin). Both reduce fever and relieve pain, but they work through different mechanisms, which means you can alternate them for more consistent relief. A common approach is to take one, then the other about four hours later, cycling back and forth while staying within each medication’s daily limit.
For acetaminophen, the maximum is 3,000 to 4,000 milligrams per day for adults, with many experts recommending the lower end to protect your liver. Extra-strength tablets are 500 mg each, so that’s a maximum of six pills per day. Ibuprofen reduces both pain and inflammation, which can be especially helpful for sore throats and sinus pressure. Follow the dosing instructions on the label for both, and be careful not to double up on acetaminophen if you’re also taking a combination cold medicine that already contains it.
Foods That Actually Help
Chicken soup isn’t just comfort food. Lab research has shown that chicken soup inhibits the movement of white blood cells called neutrophils, which drive much of the inflammation responsible for cold symptoms like congestion, sore throat, and that general “sick” feeling. Both the chicken and the vegetables in the soup showed this anti-inflammatory effect individually, and the complete soup worked without damaging cells. The warm broth also helps with hydration and loosens nasal congestion. Commercial soups vary widely in effectiveness, so homemade versions with real vegetables and chicken are a better bet.
If you’re dealing with nausea, vomiting, or diarrhea, the old BRAT diet (bananas, rice, applesauce, toast) is fine for the first day or two while your stomach settles. But you don’t need to limit yourself to just those four foods for long. Once you can keep food down, adding nutrient-dense options like cooked squash, sweet potatoes, avocado, skinless chicken, fish, and eggs gives your body the protein and vitamins it needs to recover. These foods are all bland and easy to digest but far more nutritious than plain toast.
Honey and Zinc for Coughs and Colds
If a cough is keeping you up at night, honey is one of the more effective options available. A clinical trial published in JAMA found that a single dose of buckwheat honey before bed was more effective than dextromethorphan (the active ingredient in most over-the-counter cough syrups) for reducing nighttime cough and improving sleep quality in children with upper respiratory infections. A spoonful of honey in warm water or tea works well for adults too. One important note: honey should never be given to children under one year old.
Zinc lozenges, started within the first 24 hours of cold symptoms, can meaningfully shorten how long you’re sick. A meta-analysis found that zinc acetate lozenges reduced cold duration by about 40%. That could mean shaving three or four days off a typical cold. The key is timing: zinc seems to work by interfering with the virus’s ability to replicate in your throat and nasal passages, so starting early matters. Look for lozenges that list zinc acetate or zinc gluconate as the active ingredient.
Keeping Your Environment Comfortable
Dry indoor air makes congestion worse by thickening your mucus and irritating already-inflamed airways. A humidifier in your bedroom can help. Research shows that your airways clear mucus more efficiently when indoor humidity reaches at least 30%, with 45% being closer to ideal for respiratory comfort. Water mist from a humidifier reduces mucus thickness, making it easier to breathe and blow your nose. This is especially relevant during winter months when heated indoor air can drop well below 30% humidity.
Beyond humidity, keep your room cool enough to sleep comfortably, especially if you have a fever. A warm blanket is fine, but an overheated room can make fever-related discomfort worse. Hot showers or sitting in a steamy bathroom can also temporarily relieve sinus congestion.
Warning Signs That Need Medical Attention
Most colds and flu resolve on their own within a week or two, but certain symptoms signal something more serious. For adults, a fever of 103°F (39.4°C) or higher warrants a call to your doctor. So does any fever that lasts longer than three days without improving. Seek immediate medical attention if you develop a severe headache with a stiff neck, a rash, confusion, difficulty breathing, chest pain, persistent vomiting, or pain when urinating. These can indicate complications like bacterial infection, meningitis, or pneumonia that require treatment beyond what home care can provide.
For young children, the thresholds are lower. Any baby under three months with a temperature of 100.4°F (38°C) or higher needs prompt medical evaluation. Children between three and six months should be seen for temperatures above 102°F (38.9°C) or if they seem unusually sluggish or irritable even with a lower fever.