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A member asked:
How long will it take mucinex (guaifenesin) to expire?
A doctor has provided 1 answer
Varies: The expiration on any drug varies by the manufacturer and the drug being produced. Some drugs expire quickly, in weeks to months. Most will expire in about a year after you purchase them. Pharmacies constantly update their inventory to give you the best length of time before expiration. It is not good to use expired medications.
Answered 6/5/2018
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