5 doctors weighed in:
Will taking 800 mg of guaifenesin cause side effects?
5 doctors weighed in

Dr. Cornelia Franz
Pediatrics
4 doctors agree
In brief: Depends on age
No. The usual dose is 600 mg of guaifenisn and sometimes up to 1200 as a sustained release formula for an adult.
. Anyone can be sensitive to any medication so it may cause side effects in a sensitive individual. Rashes, hives, trouble breathing are all signs of an allergic reaction. www.drugs.com has great information on any drug.

In brief: Depends on age
No. The usual dose is 600 mg of guaifenisn and sometimes up to 1200 as a sustained release formula for an adult.
. Anyone can be sensitive to any medication so it may cause side effects in a sensitive individual. Rashes, hives, trouble breathing are all signs of an allergic reaction. www.drugs.com has great information on any drug.
Dr. Cornelia Franz
Dr. Cornelia Franz
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