Most upper respiratory infections are caused by viruses, which means antibiotics won’t help. Treatment focuses on managing symptoms while your body fights off the infection, which typically takes one to two weeks. The good news: a handful of simple, evidence-backed strategies can make that stretch significantly more comfortable.
Why Antibiotics Usually Aren’t the Answer
URIs include the common cold, most sore throats, and many sinus infections. The vast majority are viral, and viruses don’t respond to antibiotics. Taking antibiotics for a viral URI won’t speed recovery and can cause side effects like diarrhea or yeast infections while contributing to antibiotic resistance.
Antibiotics are appropriate in a few specific situations: a sore throat caused by strep bacteria (confirmed by a rapid test or throat culture), a sinus infection lasting longer than 10 days without improvement, or sinus symptoms that get worse after initially getting better. If your provider prescribes antibiotics for a bacterial infection, you should notice improvement within a day or two of starting them.
For flu and COVID-19, prescription antiviral medications exist and work best when started as early as possible. These are particularly recommended if you’re at higher risk for severe illness due to age, pregnancy, or chronic health conditions.
Over-the-Counter Medications That Help
No single product cures a URI, but specific active ingredients target specific symptoms. Knowing which ingredient does what helps you pick the right product and avoid taking things you don’t need.
- Dextromethorphan is best for a dry, hacking cough that isn’t producing mucus.
- Guaifenesin loosens mucus so you can cough it up more effectively. Choose this for a wet, congested cough.
- Pseudoephedrine reduces nasal congestion and sinus pressure.
- Diphenhydramine (an antihistamine) can help with a runny nose and is particularly useful at bedtime since it causes drowsiness.
- Menthol (in cough drops, rubs, or lozenges) opens airways and provides a cooling sensation that eases coughing, with very few side effects.
One important caution: many combination products bundle decongestants, antihistamines, fever reducers, sleep aids, and pain relievers into a single dose. If you’re also taking a separate pain reliever or fever reducer, you can accidentally double up. Read labels carefully, paying close attention to the active ingredients list.
For pain and fever, standard over-the-counter pain relievers like acetaminophen or ibuprofen work well. Follow the dosing instructions on the package.
Home Remedies Worth Trying
Saline nasal irrigation, using a neti pot or squeeze bottle with a saltwater solution, helps clear congestion and can speed recovery. In children, the evidence is especially strong. One large trial found that kids who used saline nasal washes six times per day had faster resolution of nasal congestion and runny nose, used fewer medications overall, and missed less school. For adults, the evidence is more modest, but many people find real relief from the simple act of flushing out thick mucus.
Honey is one of the best-supported remedies for cough, particularly when taken before bedtime. It reduces both the frequency and severity of coughing. For children aged 2 to 5, about half a teaspoon is the right amount. Kids 6 to 11 can take a full teaspoon, and those 12 and older can take two teaspoons. Adults can use the same dose or stir it into warm tea. Never give honey to a child under 12 months old due to the risk of botulism.
Adding moisture to the air with a humidifier can soothe irritated nasal passages and ease breathing. The American Academy of Pediatrics recommends cool-mist humidifiers over warm-mist vaporizers, since vaporizers pose a burn risk if tipped over or touched by curious kids. Both add humidity equally well.
Do Zinc and Vitamin C Actually Work?
Vitamin C won’t prevent a cold, but taking it regularly may shorten one. Studies show that consistent daily supplementation (at least 200 mg per day) can trim roughly half a day off a typical cold. In children, higher doses of 1 to 2 grams per day shortened colds by about 18%. The key word is “regular.” Starting vitamin C after symptoms appear has less evidence behind it, so it works better as an ongoing habit during cold season than as a rescue measure.
Zinc has shown benefits in children, particularly in reducing fever duration and illness severity during respiratory infections. In adults, zinc lozenges taken within the first 24 hours of symptoms have shown some promise in shortening colds, though results across studies are mixed. If you try zinc lozenges, be aware they can cause nausea or leave an unpleasant taste.
A Note on Hydration
You’ve probably heard “drink plenty of fluids” as standard cold advice. The reality is more nuanced. Studies have not clearly shown that pushing extra fluids beyond your normal intake speeds recovery, and in rare cases, excessive fluid intake can actually dilute blood sodium to unhealthy levels. In children, some low-quality evidence suggests that forcing extra fluids may cause more harm than good. The practical takeaway: drink when you’re thirsty, sip warm liquids if they soothe your throat, but don’t force yourself to guzzle water beyond what feels comfortable.
What to Know About Treating Kids
Children’s URIs require a more cautious approach to medication. Over-the-counter cough and cold medicines should be avoided entirely in children under 6 years old and are not recommended for children 6 to 12 either, as they haven’t been shown to be effective in this age group. Codeine-containing products are off limits for children under 12 and for teens with asthma.
Safe options for kids include saline nasal drops or irrigation, honey (for those over age 1), a cool-mist humidifier, and age-appropriate doses of acetaminophen or ibuprofen for fever and discomfort. These simple measures cover the same ground as the medications that aren’t safe for young children.
When Symptoms Point to Something More Serious
Cold symptoms typically peak around days 2 to 3 and resolve within a week, though some linger for up to two weeks. Certain symptoms suggest the infection has progressed beyond a straightforward viral URI and may need medical evaluation: a high fever, significant throat pain with swollen tonsils, ear pain, wheezing, a productive cough with colored mucus that worsens rather than improves, or difficulty breathing.
The pattern of your symptoms matters as much as the symptoms themselves. A sinus infection that drags past 10 days without any improvement, or one that seems to get better and then suddenly worsens, is more likely to be bacterial and may benefit from antibiotics. Similarly, a sore throat with fever but no cough or runny nose raises the possibility of strep, which your provider can test for with a quick swab.