I got some labs back that showed low immunoglobulins. The next step is a vaccine challenge. This got me thinking so I dug out some labs from 2012 where I tested positive for Mycoplasma Pneumonia and Chlamydia along with Parvo. I know the standard ABX is Doxycycline. The last time I took it I was really nauseated on the full dose so could only took 1/2 dose. Is there another ABX that might lessen those problems or do I have to try several to see which makes me less ill? I read, I think it was on ProHealth, that someone was using a Transfer Factor instead of ABX? Does that work? On another thread here someone talked about something that made the ABX work better but did not say what it was. And lastly, what do I look for in a probiotic? I have always had problems with them constipating me. Add this to my IBS-C and I'm one miserable girl. Thanks for the advice.