I've been taking guaifenex for two days with no negagtive side ef...

This registry is a place to share positive or negative side effects of using Guaifenex. If you directly experienced a side effect while using Guaifenex, then we encourage you to enter it here. Please note that entries here are the experiences of individual users, and in no way means that you or anyone else will experience the same side effect, since the same medication affects people in different ways. Please always contact your physician.
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