The best guidance I got was from a clinical pharmacist, whose advice was very clear. If you've gota Medicare supplement, anannual med review may be covered.
What I learned was to avoid the antacids, dairy, etc within2-4 hours of the antibiotics. It was all given to me on writing. Why are you avoiding the dairy?

I have not started the antibiotics and I did also go on line to research.
I believe, if I can believe what I read in my internet research....it often mentioned not to take calcium, magnesium and antacid at the time you take the antibiotics.
I will avoid taking anything but healthy food at the time I take the antibiotics.
I will take supplement probiotics and healthy yogurt, kefir etc., dairy, three to four hours after the antibiotics. That's what I will be comfortable with.
Some professionals continue to educate themselves and others not so much...I woud imagine it all depends upon human nature, ego, the time element in their lives...plus personality.
As I have learned, for me, listen to others for input, do research, listen to your doctor, and then listen to what your 'gut' is telling you and do what you think is best for who you know so well, yourself.... and hope it is the right decision you made for yourself. For me I'd rather make the mistake than have someone else make the mistake, that goes for me in many things in life. That's me, and I hope I make the right choices.
Barbara