I am really struggling to figure something out and am really feeling like **** in the meantime. I have been stacking pure ephedrine with mucinex. I have been taking about 150 of mucinex with ephedrine. Now that I cut the mucinex dose to about 75 I feel constant low blood sugar. I didnt feel low blood sugar when the guaifenesin was a higher dose. I had been taking vasapro for 9 years and just ran out a few weeks ago. It was expired but I never experienced low blood sugar this intense. Do you have low blood sugar without the guaifenesin or is it something that passes the longer you use it? I also didnt get low blood sugar with primatene and bronkaid. Any advice that helps will be appreciated!