Quick question ---Azasite or Azyter?

[Ariel]

Azasite is Azithromycin at 1%
with BAC
available in the US

Azyter is Azithromycin at 1.5%
without BAC
available in Europe

I can get either one but I began using "Azyter" a few days ago and I'm finding it itches and burns quite a bit. I've been told "Azasite" doesn't do it as much but since I need be using it for long periods I'm concerned about it having BAC. I'd like to know if there is something else that sets them apart.

[Ariel]

I'm thinking about using Zithromax 100mg one tablet per day for a whole month. Zithromax has the same active ingredient.