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Mucinex DM drug information

GUAIFENESIN AND DEXTROMETHORPHAN HYDROBROMIDE
Select Consumer Group · ORAL

Product NDC: 85237-1650

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Source label information, not individualized medical advice. This record applies to the product and labeler shown below. Compare the exact formulation, strength and country with your package and the current source label.
Generic nameGUAIFENESIN AND DEXTROMETHORPHAN HYDROBROMIDE
Labeler / manufacturerSelect Consumer Group
RouteORAL
Drug classExpectorant
Product NDC85237-1650
Label effective date2026-08-30

Official product label reference

Mucinex DM — Select Consumer Group

This page contains 16 source sections for GUAIFENESIN AND DEXTROMETHORPHAN HYDROBROMIDE, oral route. Label set 3c9c8fb0-8a00-4b0f-e063-6394a90af632, version 3.

Retrieved 2026-10-02 · openFDA dataset updated 2026-10-02 · Check the current DailyMed label

Label records can cover multiple strengths or package sizes. A label listing does not by itself establish FDA approval or current market availability. Check the source and application history for this specific product.

Uses described in the label

Uses helps loosen phlegm (mucus) and thin bronchial secretions to rid the bronchial passageways of bothersome mucus and make coughs more productive temporarily relieves: cough due to minor throat and bronchial irritation as may occur with the common cold or inhaled irritants the intensity of coughing the impulse to cough to help you get to sleep

Purpose

Active ingredients (in each extended-release tablet) Purposes Dextromethorphan HBr 30 mg Cough suppressant Guaifenesin 600 mg Expectorant Table text from source: | Active ingredients (in each extended-release tablet) | Purposes | Dextromethorphan HBr 30 mg | Cough suppressant | Guaifenesin 600 mg | Expectorant
Dosage and administration — label text
Directions do not crush, chew, or break extended-release tablet take with a full glass of water this product can be administered without regard for timing of meals adults and children 12 years and older: 1 or 2 extended-release tablets every 12 hours; not more than 4 extended-release tablets in 24 hours children under 12 years of age: do not use
Warnings
Warnings Do not use for children under 12 years of age if you are now taking a prescription monoamine oxidase inhibitor (MAOI) (certain drugs for depression, psychiatric or emotional conditions, or Parkinson's disease), or for 2 weeks after stopping the MAOI drug. If you do not know if your prescription drug contains an MAOI, ask a doctor or pharmacist before taking this product. Ask a doctor before use if you have persistent or chronic cough such as occurs with smoking, asthma, chronic bronchitis, or emphysema cough accompanied by too much phlegm (mucus) When using this product do not use more than directed Stop use and ask a doctor if cough lasts more than 7 days, comes back, or occurs with fever, rash, or persistent headache. These could be signs of a serious illness. If pregnant or breast-feeding, ask a health professional before use. Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center right away.
Unclassified section
Drug Facts Dist. by: RB Health (US) Parsippany, NJ 07054-0224 Made in England
Active ingredient
Active ingredients (in each extended-release tablet) Dextromethorphan HBr 30 mg Guaifenesin 600 mg Active ingredients (in each extended-release tablet) Purposes Dextromethorphan HBr 30 mg Cough suppressant Guaifenesin 600 mg Expectorant Table text from source: | Active ingredients (in each extended-release tablet) | Purposes | Dextromethorphan HBr 30 mg | Cough suppressant | Guaifenesin 600 mg | Expectorant
Do not use
Do not use for children under 12 years of age if you are now taking a prescription monoamine oxidase inhibitor (MAOI) (certain drugs for depression, psychiatric or emotional conditions, or Parkinson's disease), or for 2 weeks after stopping the MAOI drug. If you do not know if your prescription drug contains an MAOI, ask a doctor or pharmacist before taking this product.
Ask a doctor before use
Ask a doctor before use if you have persistent or chronic cough such as occurs with smoking, asthma, chronic bronchitis, or emphysema cough accompanied by too much phlegm (mucus)
While using this medicine
When using this product do not use more than directed
When to stop use and seek help
Stop use and ask a doctor if cough lasts more than 7 days, comes back, or occurs with fever, rash, or persistent headache. These could be signs of a serious illness.
Pregnancy or breast feeding
If pregnant or breast-feeding, ask a health professional before use.
Child safety
Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center right away.
Storage and handling
Other information store at 20-25°C (68-77°F)
Inactive ingredient
Inactive ingredients carbomer homopolymer type B; D&C yellow no. 10 aluminum lake; hypromellose, USP; magnesium stearate, NF; microcrystalline cellulose, NF; sodium starch glycolate, NF
Questions
Questions? 1-866-MUCINEX (1-866-682-4639)
Recent major changes

Official sources and product identifiers

Substances listed: GUAIFENESIN, DEXTROMETHORPHAN HYDROBROMIDE

RxNorm identifiers: 1298324

Package NDC codes

85237-1650-1, 85237-1650-3

Further research and background

These are external searches for related information. Research, encyclopedia and news articles have not been imported into this product record.

Coverage and corrections

The text is extracted from a US structured product label. Tables are represented as text where supplied; formatting and illustrations may be lost. A missing section does not mean a risk is absent. This reference has not been independently reviewed by a clinician and is not a live safety-alert service.

Source retrieved 2026-10-02. Read the source policy.