Best over-the-counter options for Cough
Over-the-counter only — nothing here needs a prescription. Want the prescription options too? Every Cough option we rate, prescription included →
Match the medicine to the cough. For a dry, hacking cough, dextromethorphan (DM) is the standard OTC suppressant; for a wet, productive ("chesty") cough, guaifenesin thins mucus so it clears more easily; honey soothes cough in anyone older than 1 year. Be honest about the evidence, though: Cochrane and AAFP reviews find OTC suppressants and expectorants work modestly and inconsistently in adults — often no better than placebo. Honey actually has the better data, mostly in children. Most acute coughs come from viral colds and resolve on their own within about three weeks. Never give OTC cough and cold products to a child under 4 (FDA). See a doctor for a cough that lingers, or with any warning sign below.
Your OTC options, honestly rated
Dextromethorphan (DM) — for dry cough
Limited evidenceA cough suppressant (antitussive) that acts on the brain's cough center to reduce the urge to cough. Best suited to a dry, hacking, non-productive cough that disrupts sleep. Sold alone (e.g. Robitussin Cough, Delsym) and in many combination cold products.
MedlinePlus: dextromethorphan "is used to temporarily relieve cough caused by the common cold, the flu, or other conditions." But it's honestly modest: Cochrane's review of OTC cough medicines found no good evidence that suppressants are more effective than placebo in adults, and AAFP echoes that antitussives offer limited benefit. Follow the label ceiling — MedlinePlus advises you "stop taking dextromethorphan and call your doctor if your cough does not get better within 7 days."
Caution: Do not use in children under 4 years (FDA). Do not combine with an MAOI antidepressant or other serotonergic drugs — risk of serotonin syndrome. High doses are abused for their dissociative effect. Avoid stacking multiple cold products that each contain DM. A cough bringing up mucus usually shouldn't be suppressed.
Guaifenesin — for a chesty, productive cough
Limited evidenceAn expectorant (e.g. Mucinex, Robitussin Chest Congestion). It's meant to thin and loosen mucus in the airways so a wet cough clears congestion more effectively — not to stop the cough itself.
MedlinePlus: guaifenesin "is used to relieve chest congestion" and "works by thinning and loosening mucus in the airways, clearing congestion, and making breathing easier." Evidence for real symptom improvement is weak and inconsistent — AAFP notes expectorants have not been shown to reliably relieve cough. Staying well hydrated does much of the same job. MedlinePlus advises calling a doctor if symptoms do not improve within 7 days or come with a high fever, a rash, or a headache that does not go away.
Caution: Do not use in children under 4 years (FDA). Drink plenty of fluids, which helps guaifenesin work. It doesn't treat the underlying infection. If phlegm is green/rust-colored with fever and breathlessness, that points to possible pneumonia — see a clinician rather than self-treating.
Honey — soothing, age over 1 only
Relieves symptomsA demulcent that coats and soothes an irritated throat, easing the tickle that drives coughing. Taken by the spoonful or stirred into warm water with lemon. The one home remedy with reasonable trial data, mainly in children with nighttime cough.
A Cochrane review found honey probably reduces cough symptoms in children more than no treatment, and performed at least as well as diphenhydramine and comparably to dextromethorphan. The NHS lists hot honey and lemon among self-care measures for a cough. It's cheap, low-risk (over age 1), and a sensible first try for a nagging cold-related cough.
Caution: Never give honey to a baby under 1 year old — risk of infant botulism (NHS). It's a symptom soother, not a cure, and won't help a cough driven by asthma, reflux, or infection. Diabetics should count the sugar.
OTC cough & cold combination products in young children
Needs a clinicianMulti-ingredient syrups combining a suppressant, expectorant, decongestant, and/or antihistamine, marketed for pediatric colds.
The FDA advises that OTC cough and cold products should not be used in children under 4, because they haven't been shown to work in this age group and can cause serious, sometimes life-threatening side effects. For a young child's cold cough, the guidance is supportive care — fluids, humidified air, and honey if over 1 — not combination medicines.
Caution: Under 4: do not use — FDA. Ages 4–6: use only if a clinician advises. Combination products also make accidental double-dosing of the same ingredient (e.g. acetaminophen or DM) easy. When in doubt about a child's cough, call a pediatrician.
See a clinician if…
- Coughing up blood, or phlegm that is pink, rust-colored, or frothy
- Shortness of breath, wheezing, or difficulty breathing at rest
- Chest pain when breathing or coughing
- A cough lasting more than 3 weeks, or one that keeps returning
- High or persistent fever, drenching night sweats, or unexplained weight loss
- An infant under 3 months with any cough, or a barking/whooping cough with a whoop or gasping between coughs
- Sudden choking cough after possibly inhaling food or an object
Bottom line
Pick by cough type, and keep expectations realistic. Dry, sleep-wrecking cough: try dextromethorphan. Wet, chesty cough: guaifenesin plus plenty of fluids. Over age 1, honey is the cheapest option with the best trial support. But Cochrane and AAFP agree the adult benefit of OTC suppressants and expectorants is small and inconsistent, so don't expect a cure — most viral coughs simply need about three weeks to settle. Never give OTC cough and cold products to a child under 4 (FDA); use honey (age over 1) and supportive care instead. Read labels to avoid doubling up on the same ingredient, and see a clinician for any red-flag symptom or a cough that outlasts three weeks.
Frequently asked
- What is the best over-the-counter medicine for Cough?
- Match the medicine to the cough. For a dry, hacking cough, dextromethorphan (DM) is the standard OTC suppressant; for a wet, productive ("chesty") cough, guaifenesin thins mucus so it clears more easily; honey soothes cough in anyone older than 1 year. Be honest about the evidence, though: Cochrane and AAFP reviews find OTC suppressants and expectorants work modestly and inconsistently in adults — often no better than placebo. Honey actually has the better data, mostly in children. Most acute coughs come from viral colds and resolve on their own within about three weeks. Never give OTC cough and cold products to a child under 4 (FDA). See a doctor for a cough that lingers, or with any warning sign below.
- Does Dextromethorphan — for dry cough help with Cough?
- A cough suppressant (antitussive) that acts on the brain's cough center to reduce the urge to cough. Best suited to a dry, hacking, non-productive cough that disrupts sleep. Sold alone (e.g. Robitussin Cough, Delsym) and in many combination cold products. MedlinePlus: dextromethorphan "is used to temporarily relieve cough caused by the common cold, the flu, or other conditions." But it's honestly modest: Cochrane's review of OTC cough medicines found no good evidence that suppressants are more effective than placebo in adults, and AAFP echoes that antitussives offer limited benefit. Follow the label ceiling — MedlinePlus advises you "stop taking dextromethorphan and call your doctor if your cough does not get better within 7 days."
- Does Guaifenesin — for a chesty, productive cough help with Cough?
- An expectorant (e.g. Mucinex, Robitussin Chest Congestion). It's meant to thin and loosen mucus in the airways so a wet cough clears congestion more effectively — not to stop the cough itself. MedlinePlus: guaifenesin "is used to relieve chest congestion" and "works by thinning and loosening mucus in the airways, clearing congestion, and making breathing easier." Evidence for real symptom improvement is weak and inconsistent — AAFP notes expectorants have not been shown to reliably relieve cough. Staying well hydrated does much of the same job. MedlinePlus advises calling a doctor if symptoms do not improve within 7 days or come with a high fever, a rash, or a headache that does not go away.
- Does Honey — soothing, age over 1 only help with Cough?
- A demulcent that coats and soothes an irritated throat, easing the tickle that drives coughing. Taken by the spoonful or stirred into warm water with lemon. The one home remedy with reasonable trial data, mainly in children with nighttime cough. A Cochrane review found honey probably reduces cough symptoms in children more than no treatment, and performed at least as well as diphenhydramine and comparably to dextromethorphan. The NHS lists hot honey and lemon among self-care measures for a cough. It's cheap, low-risk (over age 1), and a sensible first try for a nagging cold-related cough.
- When should I see a doctor for Cough?
- See a clinician if: Coughing up blood, or phlegm that is pink, rust-colored, or frothy; Shortness of breath, wheezing, or difficulty breathing at rest; Chest pain when breathing or coughing; A cough lasting more than 3 weeks, or one that keeps returning; High or persistent fever, drenching night sweats, or unexplained weight loss; An infant under 3 months with any cough, or a barking/whooping cough with a whoop or gasping between coughs; Sudden choking cough after possibly inhaling food or an object.
Need the prescription options too?
This page covers what you can buy over the counter. Our guide to every treatment for a cough adds the prescription options a clinician can offer, each with our FDA recall-safety rating.
OTC options for other conditions
Sources
General information, not medical advice, and not a substitute for your clinician or pharmacist. Follow the label on any OTC product, mind interactions with your other medicines, and seek care for any red-flag symptom.