Most common colds resolve on their own within a week, and no medication can cure one. Treatment is entirely about managing symptoms, staying comfortable, and avoiding things that don’t actually work. Cold symptoms typically peak two to three days after infection, then gradually improve. Here’s what genuinely helps during that stretch.
What Actually Works for Congestion
If your nose is stuffed, be careful which decongestant you reach for. The FDA has determined that oral phenylephrine, the active ingredient in many popular cold tablets sold on pharmacy shelves, is not effective as a nasal decongestant. An advisory committee reviewed the data and unanimously agreed the standard oral dose doesn’t work. The FDA’s ruling applies only to the oral form, not nasal sprays containing phenylephrine, which deliver the drug directly where it’s needed.
Pseudoephedrine (sold behind the pharmacy counter in most states) remains an effective oral option. Nasal spray decongestants also work well for short-term relief, but using them for more than three consecutive days can cause rebound congestion that makes things worse.
Saline nasal irrigation is a drug-free alternative with solid evidence behind it. A trial of over 400 children found that saltwater nose drops (three drops per nostril, at least four times a day) shortened cold symptoms from an average of eight days to six. Kids in the saline group also needed fewer medications, and fewer family members caught the cold afterward: 46% of saline households reported spread compared to 61% with usual care. The mechanism is straightforward. Chloride from the salt helps cells lining the airway produce more of a natural antiseptic substance that suppresses viral replication. Adults can use saline sprays or a neti pot with the same logic.
Pain, Fever, and Body Aches
Over-the-counter pain relievers handle the headache, sore throat, and low-grade fever that come with most colds. Acetaminophen and ibuprofen both work. Combination tablets containing both are available, though you need to track your total acetaminophen intake carefully. The ceiling for acetaminophen is 4,000 milligrams in 24 hours, and exceeding that risks liver damage. If you’re taking a multi-symptom cold product, check the label because many already contain acetaminophen.
Fever during a cold is your immune system working. Treating it is a comfort decision, not a medical necessity, unless it’s very high or making you miserable.
Cough Relief: Honey Performs Surprisingly Well
A systematic review published in BMJ Evidence-Based Medicine found that honey reduced cough frequency and cough severity compared to usual care. It performed as well as dextromethorphan, the active ingredient in most OTC cough suppressants, with no statistically significant difference between the two for cough frequency, severity, or overall symptoms. Honey actually outperformed diphenhydramine (found in some nighttime cold formulas) across all three measures.
A spoonful of honey in warm water or tea before bed is a reasonable first-line approach for adults and children over one year old. Honey should never be given to infants under 12 months due to the risk of botulism.
Zinc Lozenges Can Shorten Your Cold
Zinc acetate lozenges are one of the few supplements with meaningful evidence for reducing cold duration. An individual patient data meta-analysis of three randomized trials found that colds were roughly 40% shorter in people who took zinc lozenges. The effective dose in those trials was 80 to 92 milligrams of elemental zinc per day, started early in the illness.
Timing matters. Zinc appears to work best when you begin taking it within the first 24 hours of symptoms. The lozenges need to dissolve slowly in your mouth rather than being swallowed, because the zinc needs contact with the throat and nasal passages. Side effects like nausea or a bad taste are common at these doses, and zinc nasal sprays should be avoided entirely due to reports of permanent loss of smell.
Vitamin C: Modest at Best
Large doses of vitamin C may slightly reduce how long a cold lasts, but the evidence is not strong, and the effect is small. Taking vitamin C after symptoms have already started appears to do even less than taking it regularly as a preventive measure. It won’t hurt you at reasonable doses, but it’s not a reliable treatment.
Fluids and Rest
The advice to “drink plenty of fluids” is universal, but it’s worth knowing that no randomized controlled trials have actually tested whether extra fluids speed recovery from a cold. The theoretical benefits make sense: fever and faster breathing increase fluid loss, reduced appetite means less fluid intake, and staying hydrated may help thin mucus. But the specific claim that pushing fluids beyond normal thirst cures a cold faster is unproven.
Drink enough to stay hydrated, especially if you have a fever, but there’s no need to force excessive amounts. For lower respiratory infections, overhydrating can in rare cases dilute blood sodium levels, causing headaches or confusion. Let thirst guide you, and keep water, broth, or warm tea within easy reach.
Rest is less controversial. Sleep is when your immune system does its most concentrated work. Prioritizing sleep and scaling back activity during the first few days, when symptoms peak, gives your body the best chance of a quick recovery.
Cold Medicine and Children
The rules are different for kids. The FDA recommends against giving OTC cough and cold medicines to children under 2, citing the risk of serious side effects including slowed breathing. Manufacturers have voluntarily extended that warning to children under 4. These products can be particularly dangerous if a child receives more than the recommended dose, takes them too frequently, or takes multiple products containing the same active ingredient.
Homeopathic cold products for children aren’t safer by default. The FDA has found that some contain drug ingredients at levels far exceeding what’s listed on the label. Children under 4 who took certain homeopathic cold remedies experienced seizures, allergic reactions, difficulty breathing, and dangerously low blood sugar. For young children, saline drops, honey (if over age 1), fluids, and a cool-mist humidifier are the safest options.
Signs Your Cold May Be Something Else
A typical cold wraps up within a week, though a mild cough can linger a bit longer. Symptoms that persist beyond 10 to 14 days may signal a secondary bacterial infection. A sinus infection, for instance, often follows a cold that just won’t quit.
Watch for these patterns that suggest something bacterial has taken hold: fever that gets worse a few days into the illness instead of improving, fever that’s unusually high for a cold, or new symptoms appearing after initial improvement. Ear pain and a new fever after several days of a runny nose often point to an ear infection. A persistent cough paired with stomach pain or difficulty breathing can indicate pneumonia. These situations benefit from medical evaluation because antibiotics, which do nothing for a virus, can treat bacterial complications.