You mentioned that it is a drug...does one have to get it through a doctor?
Me and my doctor avoid calling each other lately. It's a kind of a stand-off. She wants me on diabetic medicines, but my numbers are so good that the clinic put me on annual call-back. I think it's the interpretation of the word 'controlled' in the phrase 'controlled diabetic'...she means controlled by medication, but I say controlled by me!
Or, is Guaifenesin a component of some food or herb?