I do not understand your question, but both medications are used for different treatments and also belong to different drug classes.
1.-Guaifenesin is used in the treatment of cough; fibromyalgia; bronchitis; bronchiectasis and belongs to the drug class expectorants. Risk cannot be ruled out during pregnancy.
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2.-Guanfacine is used in the treatment of adhd; high blood pressure and belongs to the drug class antiadrenergic agents, centrally acting. There is no proven risk in humans during pregnancy.
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