Guaifenesin belongs to a group of medications called expectorants like Cocillana. It works by thinning and liquefying your phlegm so that it can be coughed out more easily. Therefore, it is most commonly used for treating wet cough.
Guaifenesin is taken orally either in conventional tablets or syrup form.
The usual adult or child (≥ 12 years) dose is 200-400 mg every 4 hours. The dose of long-acting Guaifenesin (Mucinex) is 600-1200 mg every 12 hours.
For children aged 6 to 11 years old, the usual dose is 100 mg 4 times daily (maximum dose of 400 mg).
People who are allergic to Guaifenesin or any component of the formulation.
Common dosing schedule:
You can take Guaifenesin with or without food.
This schedule is for reference only, adjustments may be made according to individual needs.
Some common medications Guaifenesin may interact with:
Please notify your doctor or pharmacist if you are taking the above medication, dosage adjustments might be needed.
In Hong Kong, Guaifenesin is an over-the-counter medicine which can be purchased without a prescription from any retail outlet in Hong Kong. This includes grocery stores, convenience stores, medicine shops, and pharmacies. It can also be obtained from doctors. To find a pharmacy near you, refer to the list of pharmacies (“Authorized Sellers of Poisons”) from the Hong Kong Department of Health.
For more information about drug names and ingredients, you can visit Hong Kong’s Drug Office at https://www.drugoffice.gov.hk
Need more information?
For detailed information about the use of Guaifenesin in children, pregnancy and breastfeeding, and for questions about drug interactions, please check with your pharmacist or doctor.
Disclaimer: our goal is to provide you with the most relevant drug information and common dosage for Hong Kong. This information does not constitute medical advice. For specific treatment recommendations and advice, always discuss with your doctor or pharmacist, and follow the instructions included with your specific medicine.
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