Every couple days and was infusing it too fast so had red man’s syndrome.

Wow!! You hit it right on! Multiple IVs and eventually a mainline directly into the vein.
Most of my veins were shot and to get the mainline in took 8 tries.

Yes, vancomycin caused liver damage for me. And to top it all off my doctor accused me of being a drinker. When I told him I rarely have any alcohol, he held up his hand as if in court and asked me to swear. Very hurtful and offensive. In retrospect it makes me angry.
He told me I would be in the hospital 3-4 days for a procedure to remove pleural effusion from my collapsed lung due to pneumonia two months prior. The pneumonia was related to the biologic I was on for Polymyalgia Rheumatica.
I was hospitalized for that and almost died after going septic.
This time 3-4 days turned into 19.
I had walked into the hospital but after they got ahold of me, I had hospital pneumonia, some other mysterious infection, severe anemia and of course, the liver damage. I was even unable to walk. I checked myself out when they wanted to do surgery on my lung.
I went to Mayo Clinic and received the care I needed which was to give my body time to recover. No surgery needed.
So currently my rheumatologist wants to start immunosuppressants again. I said no. My belief is that doctors must be getting kickbacks for prescribing these drugs. Perhaps that is why they push them.
What has happened to medicine?