I did a lot of researching through Dr google (know I shouldn’t, but in this case…) before I started this past January. I decided to space my vitamins and my probiotics apart. I have a couple other meds I take in the am an hour before Azithromycin and ethambutol which I take with breaky. I take the liquid calcium supplement you mention at noon with my greens and collagen and take my probiotics and B12 around 3 pm with no food. Then the Rifampin at nine or ten pm before bed.
Other than new headaches and not as much nausea anymore, I seem ok and am able to get in the good stuff while taking all these drugs. It’s key to get in your old meds and vitamins. Don’t need your bones cracking or other health issues to arise so that when you are successful in this fight you are a broken mess!