It might be wise to use the antibiotics that will best address your infection.
I have MCAS and just finished 3 months of IV azithromycin, doxycycline, and rifampin, the best combo for my infections. The first 2 made me nauseous and headachy, which I managed with Benadryl, ketotifen, and fexofenadine, and my doctor also had me add Tagamet and quercetin.