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Table 7 Examples of currently available over-the-counter guaifenesin formulations and recommended doses in the US and Canada

From: Role of guaifenesin in the management of chronic bronchitis and upper respiratory tract infections

Formulation Population Recommended doses Available dosage form – Product example(s)
Immediate-release Children – 2 to <6 years US: 50–100 mg up to 4-hourly; max 600 mg/day
Canada: Not recommended
Syrup – CVS Health® Children’s Mucus Relief Chest Congestion
Soft chews – Kids-EEZE® Chest Relief
Immediate-release Children – 6 to <12 years US: 100–200 mg up to 4-hourly; max 1200 mg/day
Canada: Not recommended
Syrup – CVS Health® Children’s Mucus Relief Chest Congestion
Soft chews – Kids-EEZE® Chest Relief
Immediate-release Adults and children 12 years and older US: 200–400 mg up to 4-hourly; max 2400 mg/day
Canada: 200–400 mg up to 6-hourly; max 1600 mg/day
Tablet – Bidex®
Syrup – Robitussin® Mucus & Chest Congestion; Scot-Tussin Expectorant
Soft chews – Kids-EEZE® Chest Relief
Extended-release Adults and children 12 years and older US: 600–1200 mg up to 12-hourly; max 2400 mg/day
Canada: 600 mg (1 tablet) up to 12-hourly; max 1200 mg/day (2 tablets)
Tablet – Mucinex®