Dextromethorphan/Guaifenesin

DEA Class; Rx

Common Brand Names; Mucinex DM, Robitussin Peak Cold Cough+Chest Congestion DM, Delsym Cough + Chest Congestion, Children’s Delsym Cough + Chest Congestion, Robitussin Peak Cold Maximum Strength Cough+Chest Congestion DM, Vicks 44E, Coricidin HBP Chest Congestion & Cough, Diabetic Tussin DM, Diabetic Tussin DM Maximum Strength, Duratuss DM, Genatuss DM, Guaicon DM, Guaifenex DM, Guiatuss DM, Mucinex Fast-Max DM Max, Phanatuss DM, Q-Tussin DM, Robafen DM, Safetussin DM, Siltussin DM, St. Joseph Chest Congestion & Cough, Touro DM, Vicks Pediatric Formula 44E

  • Antitussives, Non-narcotic Combos

Oral non-opioid antitussive (dextromethorphan) and expectorant (guaifenesin) combination
Used to quiet cough and induce expectoration
Products mostly marketed for cough due to common cold

Indicated for the temporary relief of cough, especially non-productive cough, due to minor throat and bronchial irritation such as may occur with the common cold.

Indicated for temporary control of cough due to minor throat and bronchial irritation

Documented hypersensitivity to either drug or components

Within 14 days of taking MAO inhibitor

  • Dizziness
  • Drowsiness
  • Headache
  • Nausea
  • Vomiting

Dextromethorphan

  • Do not take for persistent or chronic cough associated with smoking, asthma, or emphysema, or if it is accompanied by excessive phlegm unless directed by a healthcare provider; may slow respiration rate

  • Hallucinations, confusion, agitation, hyper-reflexia, shivering, myoclonus, and tachycardia may occur

  • Caution in children younger than 6 years

  • Not for OTC use in children <4 years

  • Use caution in patients who are sedated, debilitated or confined to supine position

Guaifenesin

  • Guaifenesin is not for administration in persistent cough associated with chronic bronchitis, smoking, asthma, or accompanied with excessive secretions

  • If cough is accompanied by excessive phlegm, consult healthcare provider prior to use

  • Consult healthcare provider if symptoms are accompanied by fever, rash, or persistent headache

Pregnacy Category: C

Lactation: excretion in milk unknown; use with caution

Pregnant or breastfeeding patients should seek advice of health professional before using OTC drugs

Do not exceed recommended dosage limits for the specific product prescribed. In general, maximum dosing is established based on the dextromethorphan component of the product selected. The following are general guidelines.

Adults

Dextromethorphan 120 mg/day PO; guaifenesin 2.4 grams/day PO.

Geriatric

Dextromethorphan 120 mg/day PO; guaifenesin 2.4 grams/day PO.

Adolescents

Dextromethorphan 120 mg/day PO; guaifenesin 2.4 grams/day PO.

Children

12 years: Dextromethorphan 120 mg/day PO; guaifenesin 2.4 grams/day PO.
6 to 11 years: Dextromethorphan 60 mg/day PO. Do not use extended-release dosage forms.
2 to 5 years: Dextromethorphan 30 mg/day PO. Do not use extended-release dosage forms.
Less than 2 years: Safety and efficacy have not been established.

Infants

Safety and efficacy have not been established.

Dextromethorphan/guaifenesin

capsule

  • 10mg/200mg

granules

  • (5mg/100mg)/packet

liquid

  • (5mg/100mg)/5mL
  • (10mg/100mg)/5mL
  • (10mg/150mg)/5mL
  • (10mg/200mg)/5mL
  • (15mg/100mg)/5mL
  • (15mg/200mg)/5mL
  • (20mg/200mg)/5mL
  • (20mg/300mg)/5mL

liquid oral drops

  • (5mg/100mg)/2.5mL

caplet

  • 15mg/400mg
  • 20mg/400mg

tablet

  • 60mg/1000mg
  • 60mg/1200mg

tablet, extended-release

  • 30mg/600mg
  • 60mg/1200mg

tablet, timed release

  • 60mg/1200mg

tablet, sustained-release

  • 60mg/1200mg

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