Yes, kinda sorta...: Check out drug-drug interaction checkers at www.Online.Epocrates.Com and www.Drugs.Com, specifically http://www.Drugs.Com/interactions-check.Php?Drug_list=719-8048, 1200-719. Then look for generic equivalents or read ingredient labels. Mucinex (guaifenesin) is a brand of Guaifenesin while Guaifenesin ac is Guaifenesin plus codeine. So yes, your combo is already sold as such. Just don't take too much together.
Answered 4/2/2016
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