Hi Dar. I would think it would be okay to take them at the same time, but ask your doctor to make sure. Also ask the doctor if he/she wants you to take two Zithromax at one time or one twice a day. I once assumed it was to be taken twice daily, but my doctor wanted me to take it all at once. It is better to find out for sure.
Good luck with your protocol.
Yep im from Mi I go to both Dr Z and Dr L. Im not going to the conference ive been feeling too crappy lately and dont know if ill feel up to it by then, though my Mom and husband are going!