Hey ...I have been popping them since last February and I have just popped my last rifampicin. That's it. No more rifampicin. No more religiously waiting for 2 hours after food or an hour before. No more extremely dark urine. Finished.I shall still continue to take my other antibiotics ... until they too run out. I haven't done a count up but I guess that will be in the middle of the first quartile of next year. In the meantime, I think I need to get plenty of milk thistle down my gullet and give my liver a winter break.G.