Overview
Dextromethorphan is a cough suppressant used in tablet form to temporarily relieve cough caused by minor throat and bronchial irritation, such as that associated with the common cold. It is intended for use in adults and children 12 years and older.
What is it used for?
This medication is used to temporarily relieve coughs due to minor throat or bronchial irritation. It is suitable for adults and children aged 12 years and older. It is not intended for use in children under 12 years of age.
Active ingredients
Dextromethorphan Hbr
How it works
Dextromethorphan acts on the brain to suppress the cough reflex, reducing the urge to cough caused by irritation in the throat and airways.
Dosage and administration
Adults and children 12 years and over
Take 1 tablet every 6 to 8 hours as needed. Do not exceed 4 tablets in any 24-hour period.
Children under 12 years
Do not use.
Contraindications
- Use is contraindicated in patients currently taking monoamine oxidase inhibitors (MAOIs) or within 2 weeks of stopping MAOI therapy.
Warnings and precautions
- Do not use if you are currently taking a prescription monoamine oxidase inhibitor (MAOI), or within 2 weeks of stopping such medication. If unsure whether your medication contains an MAOI, consult a doctor or pharmacist before use.
- Ask a doctor before use if you have a cough accompanied by excessive mucus or phlegm, or a persistent or chronic cough caused by smoking, asthma, or emphysema.
- Stop use and seek medical advice if cough persists for more than 1 week, recurs, or is accompanied by fever, rash, or persistent headache, as these may be signs of a serious condition.
- If pregnant or breastfeeding, consult a healthcare professional before use.
- Keep out of reach of children.
- Do not use if the safety seal under the child-resistant cap is broken or missing.
- In case of overdose, get medical help or contact a Poison Control Center immediately.
Drug interactions
Should not be used with prescription MAOIs due to risk of serious interactions.
Pregnancy and breastfeeding
If pregnant or breastfeeding, ask a health professional before use.
Overdose information
In case of overdose, seek medical attention immediately or contact Poison Control at 1-800-222-1222.
Storage
Store at 20-25°C (68-77°F).
Manufacturer(s)
Medical references
- U.S. National Library of Medicine – DailyMed
- Official prescribing information
- Other authoritative medical references, where applicable
References are used to support the medical information presented on this page.
Medical information disclaimer
The information on WikiDrug is provided for educational and informational purposes only. It is not intended to replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional before making decisions about medication use.
Last updated November 6, 2026