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Mucus Dm (guaifenesin/dextromethorphan HBr)

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Last reviewed · Source: First Databank (FDB) drug data

Overview

Dextromethorphan, a derivative of levorphanol, is an antitussive agent.

Guaifenesin is an expectorant.

Dextromethorphan is used for the temporary relief of coughs caused by minor throat and bronchial irritation such as may occur with common colds or with inhaled irritants. Dextromethorphan is most effective in the treatment of chronic, nonproductive cough. The drug is a common ingredient in commercial cough mixtures available without prescription.

Generic name: guaifenesin/dextromethorphan HBr
Pronunciation: (gweye-FEN-eh-sin/dex-trow-meth-OR-fan)

Reference product & biosimilars

No reference, biosimilar or interchangeable associated with this drug.

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Indications

The following indications are listed for Mucus Dm:

  • Cough

Dosing

Dosages of dextromethorphan hydrobromide and dextromethorphan polistirex are expressed in terms of dextromethorphan hydrobromide.

The usual dosage of dextromethorphan hydrobromide for adults and children 12 years of age or older is 10-20 mg every 4 hours or 30 mg every 6-8 hours, not to exceed 120 mg daily, or as directed by a clinician. The usual dosage for children 6 to younger than 12 years of age is 5-10 mg every 4 hours or 15 mg every 6-8 hours, not to exceed 60 mg daily, or as directed by a clinician. Children 2 to younger than 6 years of age may receive 2.5-5 mg every 4 hours or 7.5 mg every 6-8 hours, not to exceed 30 mg daily, or as directed by a clinician. Dosage in children younger than 2 years of age must be individualized. Suggested dosages for children younger than 2 years of age+ for some cough and cold preparations have been published in various references for prescribing and parenting. Using recommended dosages for adults and older children, some clinicians have extrapolated dosages for these preparations based on the weight or age of children younger than 2 years of age. However, these extrapolations were based on assumptions that pathology of the disease and pharmacology of the drugs are similar in adults and pediatric patients. There currently are no specific dosage recommendations (i.e., approved by the US Food and Drug Administration (FDA)) for cough and cold preparations for this patient population. (See Cautions: Pediatric Precautions.)

The usual dosage of dextromethorphan hydrobromide as the extended-release oral suspension containing the polistirex for adults and children 12 years of age or older is 60 mg twice daily. The usual dosage as the extended-release oral suspension for children 6 to younger than 12 years of age is 30 mg twice daily; children 2 to younger than 6 years of age may receive 15 mg twice daily.

Drug interactions

There is no enhanced messaging for this drug.

Contraindications

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Adverse reactions

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Precautions

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ICD codes

No ICD codes are available for this drug.

Formulary status

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Last reviewed · Source: First Databank (FDB) drug data