Description and Brand Names

Drug information provided by: Merative, Micromedex®

US Brand Name

  1. Allfen
  2. Altarussin
  3. Amibid LA
  4. Antitussin
  5. Bidex 400
  6. Diabetic Siltussin DAS-Na
  7. Diabetic Tussin EX
  8. Drituss G
  9. Guaifenex G
  10. Guaifenex LA
  11. Mucinex
  12. Robitussin

Canadian Brand Name

  1. Balminil Expectorant
  2. Balminil Expectorant Sugar-Free
  3. Benylin-E
  4. Benylin E Extra Strength Chest Congestion
  5. Broncho-Grippex Expectorant
  6. Resyl
  7. Robitussin Extra Strength


Guaifenesin is used to help clear mucus or phlegm (pronounced flem) from the chest when you have congestion from a cold or flu. It works by thinning the mucus or phlegm in the lungs.

This medicine is available both over-the-counter (OTC) and with your doctor's prescription.

Do not give any over-the-counter (OTC) cough and cold medicine to a baby or child under 4 years of age. Using these medicines in very young children might cause serious or possibly life-threatening side effects .

This product is available in the following dosage forms:

  • Solution
  • Syrup
  • Liquid
  • Tablet, Extended Release
  • Tablet

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