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Guaifenesin

Why is it prescribed?

Guaifenesin is used to reduce chest congestion caused by the common cold, infections, allergies.

Products that have this ingredient include •Choledyl® expectorant •

See other drugs used in the treatment of •asthma •bronchitis •chronic bronchitis (COPD) •COPD •emphysema (COPD) •

Side effects may include:

  • dizziness or headache,
  • rash
  • nausea, vomiting, or stomach upset.

Guaifenesin is an expectorant, which means a medication that loosens or thins mucus making it easier to be coughed up.


Do not use in children under the age of 6 years.  Discontinue use and consult physician if cough persists longer than 7 days or if you develop a rash, fever or headache while using this medication.