I've started the medication! I started the first week with 500 MG. of Azithromycin and then they added on 600 MG. of Rifanpin this week. Next week they will start me on Ethambutol. I watched the videos and they said an average dose is 600 MG. My doctor prescribed a total of 1600/ 2 pills at night and 2 pills in the morning. The nurse thought it went by weight. My weight is 167. NO! I haven't lost any weight! What doses are others taking of the Ethambutol. They have to order it, so I probably won't start it until Wednesday.