Do guaifenesin 400mg have penicillin in it?

Mrs.

Hi,

Sorry for the late response but I suppose you could always

use this for future reference. I am allergic to penicillin and sulfer

and was given samples of this medicine. I have been taking the

tablets for two days now with no unpleasant side effects. Hope this

helps! You should however, still check with your doctor. Have a

delightful Autumn!

Jennifer