I used both BPC-157 and TB-500 for a grade 4 SLAP tear. There are different surgeries used for SLAP tears, and I could not find a surgeon that would do the surgery I wanted (in the UK). I can't remember the exact details, but one is more risky and has a higher chance of returning to pre-surgery performance (normally athletes would take this option). The other is less risky but screws up your performance (general population usually get this option). I could only get surgeons to agree to the latter in the UK.
Anyway, I went and injected both the peptides for 15 weeks, and after over a year of having a completely messed up shoulder, it fixed it well enough that I can surf.
I was going to transfer to a US office to get the surgery done, but covid fucked up my transfer. I'll probably never compete in a powerlifting event again, but I can surf and that's good enough for me.
I injected 0.25mg of BPC-157 twice a day(near the shoulder) and 3mg of TB-500 every 3.5 days (into belly).
Disclaimer: not a doctor, just my experience. I bought them off random websites which in hindsight was insane. I was depressed and desperate. If you can get it from a real doctor/clinic, it would obviously be much better.