I've read that bulking up with NAC could help mitigate damage against fluoroquinolone antibiotics though it's not been properly tested. There's a book out there called "How We Can Halt the Cipro & Levaquin Catastrophe". I bought it because my T spike was initially the result of taking Cipro. The author talks about the role of magnesium and NAC in possibly counteracting the damage that those antibiotics can cause. I know that vancomycin is a different class of antibiotic, but it may be worth talking to your doctor about anything that could do the same for vancomycin that is similar to how magnesium and NAC work for fluoroquinolones.