Rifampin
"CURRENTLY on rifampin therapy along with ethambutol, zithromax, IV amikacin and prilosec for the MAC. experiencing numerous side effects to include diarrhea, nausea, intermittent episodes of severe vomiting, extreme fatigue,  headaches (almost all the time), dizziness, double vision, generalized body aches, and severe cramps in my extremities. It is hard to tell which drug is the culprit.  I have experienced two incidences of elevated liver enzymes, which have returned back to within normal limits so far. At this point in my therapy, there has been no documented improvement, but I am told to expect it to take up to two years of therapy for a cure.  I will update my experience as time progresses."