Mucinex® DM Expectorant & Cough Suppressant Extended-Release Bi-Layer Tablets Maximum Strength

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


Do not crush, chew, or break tablet

Take with a full glass of water

This product can be administered without regard for the timing of meals

Adults and children 12 years and older: 1 tablet every 12 hours; not more than 2 tablets in 24 hours

Children under 12 years of age: do not use

Other information:

  • Store at 20-25°C (68-77°F)
  • Tamper evident: Do not use if carton is open or if printed seal on blister is broken or missing



Dextromethorphan HBr 60 mg (in each extended-release-bi-layer tablet)

Guaifenesin 1200 mg (in each extended-release-bi-layer tablet)


Carbomer homopolymer type B, D&C yellow #10 aluminum lake, hypromellose USP, magnesium stearate, NF, microcrystalline cellulose, NF, sodium starch glycolate, NF


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 two 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.


Reckitt Benckiser Group PLC
Brand and manufacturer information provided by Hamacher Resource Group, Inc. with updates made on a quarterly basis. Brand and manufacturer content is intended for informational purposes only.