Guaifenesin |
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| Breonesin; Glycerol Guaiacolate; Guaiphenezine; Guiatuss; Humibid; Hytuss; My-301; Scott-Tussin; Ether, Guaiacol Glyceryl; Glyceryl Ether, Guaiacol; Guaiacolate, Glycerol; My 301; My301; Scott Tussin; ScottTussin | |
| An expectorant that also has some muscle relaxing action. It is used in many cough preparations. | |