ibromyalgia
"I started a store brand guaifenisin three months ago 600mg extended release 2x a day for the fibromyalgia.  Within two weeks, the extreme muscle cramps in my legs, feet and torso had decreased by 95%.  Now that I have been taking this for three months, my IBS symptoms have decreased.  I follow the salicylate protocol meaning no aspirin or related products and have changed my toothpaste and facial products to eliminate those that might negate the guaifenisin.  Have also eliminated any herbal supplements to give this a try."