copd, maintenance
"Took regular for about 3 weeks.  Started severe muscle cramps, bone pain, cough, sputum production, sleeplessness,, voice change,spinning sensation,  blurred vision, respiratory infection. Stopped about 2 months.  Still having severe muscle cramps and bone pain.    How long will this last?Could it have lowered creatine  kinase , potassium, or magnesium."