What to Take for a Cold: A Plain Guide to OTC Options

Which OTC ingredient helps which cold symptom?

Stuffy nose / nasal congestion: Decongestants such as pseudoephedrine and phenylephrine narrow blood vessels in the nasal lining and reduce swelling. Pseudoephedrine is generally considered more effective; it is kept behind the pharmacy counter but available without a prescription. Nasal decongestant sprays (oxymetazoline) work quickly but should not be used for more than two to three consecutive days — longer use can cause rebound congestion worse than the original stuffiness.

Runny nose / sneezing: First-generation antihistamines (diphenhydramine, chlorpheniramine) can reduce a cold-related runny nose, though they cause drowsiness. Non-drowsy antihistamines (loratadine, cetirizine) are primarily for allergies and are less effective for cold-specific runny nose.

Dry, tickling cough: A cough suppressant containing dextromethorphan may provide some relief.

Productive cough with thick mucus: An expectorant (guaifenesin) thins mucus to make it easier to clear. Staying well hydrated also helps.

Sore throat: Salt-water gargling has reasonable supporting evidence. OTC throat sprays and lozenges with benzocaine or phenol can briefly ease discomfort.

Fever and body aches: Acetaminophen 1Ref 1MedlinePlus / U.S. National Library of Medicine (2024).Acetaminophen: MedlinePlus Drug Information.Acetaminophen use for fever and aches; daily dosing limits and liver caution; use in pregnancy as generally considered safer OTC option for fever or ibuprofen 2Ref 2MedlinePlus / U.S. National Library of Medicine (2024).Ibuprofen: MedlinePlus Drug Information.Ibuprofen as an effective OTC option for fever and body aches; note that aspirin should not be given to children with viral illness are the standard choices — both are effective for fever and aching. Ibuprofen also has anti-inflammatory properties. Aspirin should not be given to children or teenagers with a viral illness because of the risk of Reye syndrome.

Why combination cold medicines can cause problems

Many popular cold products combine several active ingredients into one tablet or liquid. This can be convenient, but it also means taking ingredients you may not need — and potentially doubling up without realizing it.

For example, many combination cold formulas contain acetaminophen. If you separately take a pain reliever or another product that also contains acetaminophen, you may exceed the daily limit, which poses a liver risk 1Ref 1MedlinePlus / U.S. National Library of Medicine (2024).Acetaminophen: MedlinePlus Drug Information.Acetaminophen use for fever and aches; daily dosing limits and liver caution; use in pregnancy as generally considered safer OTC option for fever. Read every label. Know every active ingredient. A pharmacist can walk through the label with you in a few minutes and help you avoid these overlaps — this is one of the most genuinely useful things a pharmacist can do.

What probably does not help a cold

Antibiotics are the most common thing people seek for a cold and the one thing that genuinely does not work. Colds are caused by viruses, and antibiotics only treat bacteria 3Ref 3Alemi F, Vang J, Wojtusiak J, et al. (2022).Differential diagnosis of COVID-19 and influenza.Distinguishing a common cold from influenza or COVID-19; importance of testing when symptoms are unusually severe, sudden-onset, or accompanied by significant body aches and fever. Taking them for a cold provides no benefit and contributes to antibiotic resistance.

Zinc lozenges and vitamin C have mixed and modest evidence as cold-shorteners — they may help some people slightly, but the effects are not dramatic. Echinacea evidence is similarly inconsistent.

Honey has reasonable evidence for easing cough, especially in children over one year of age. Steam, saline rinses, and neti pots do not cure a cold but can provide meaningful symptom relief and are safe.

Special situations where OTC medicine needs extra thought

Children under 4 to 6 years: OTC cough and cold medicines are not recommended because of safety concerns and lack of proven benefit in young children. Use plain acetaminophen or ibuprofen (weight-appropriate doses) for fever and aches, and consult a pediatrician for anything else.

Pregnancy: Many common cold ingredients — including pseudoephedrine, most cough suppressants, and some antihistamines — are not well-studied or are flagged for caution in pregnancy. Saline rinse, rest, and acetaminophen are generally considered the safest starting point, but confirm with your OB or midwife 1Ref 1MedlinePlus / U.S. National Library of Medicine (2024).Acetaminophen: MedlinePlus Drug Information.Acetaminophen use for fever and aches; daily dosing limits and liver caution; use in pregnancy as generally considered safer OTC option for fever.

High blood pressure: Oral decongestants (pseudoephedrine, phenylephrine) can raise blood pressure and are generally not recommended for uncontrolled hypertension. Ask your pharmacist for a decongestant-free alternative.

Liver or kidney disease: Acetaminophen is processed by the liver — if you have liver disease, ask about safe dosing 1Ref 1MedlinePlus / U.S. National Library of Medicine (2024).Acetaminophen: MedlinePlus Drug Information.Acetaminophen use for fever and aches; daily dosing limits and liver caution; use in pregnancy as generally considered safer OTC option for fever. Some cold medicines are cleared by the kidneys; dose adjustments may be needed.

Other medications: Check for interactions, especially with blood pressure medication, MAOIs, and sleep aids. A pharmacist is a free resource for this.

When a cold is probably not a cold

If a cold seems unusually severe, came on very suddenly, or comes with significant body aches and fever, it is worth considering influenza or COVID-19 — both have specific treatments that work best when started early 3Ref 3Alemi F, Vang J, Wojtusiak J, et al. (2022).Differential diagnosis of COVID-19 and influenza.Distinguishing a common cold from influenza or COVID-19; importance of testing when symptoms are unusually severe, sudden-onset, or accompanied by significant body aches and fever. If a sore throat is the main symptom and you have no runny nose or cough, strep throat (a bacterial infection that does need antibiotics) may be the cause rather than a virus. A rapid test at an urgent care or your clinician's office can confirm either within minutes.