Bpc 157 has been working

So for about 3 weeks now I’ve been taking bpc 157 nasal spray version and I originally got it because I’ve had a torn rotator cuff for like 2 years now. And I wanted to experiment with the nasal spray first before I started injections because I’m scared. But I’m here to vouch I actually have notice benefits so far, not so much with my shoulder yet but I train jiu jitsu and when doing live rounds my cardio and endurance has just significantly improved just within a few weeks like it’s actually so cool is bpc157 supposed to help with endurance? But speaking of my shoulder I am able to do more reps on shoulder press than before but it’s definitely not healed and I still get a sharp pain