bpc-157 tendon-to-bone healing animal studies The Role of Peptides in Bone and Regeneration (CGRP, OGP, BPC-157) – UnderstandOrtho™ BPC-157 and Healing Peptides: Hype
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And since the nutrient is water soluble, you cant take in too much

BPC-157 Dosing Reference for Dogs (Off-Label) Based on 2-10 mcg/kg/day

The specific structure and cell types allow the lung to recover more easily after the elimination of fibrosis, although pulmonary fibrosis is prone to form large scars compared with hearts with severe diffuse fibrosis

It's just demonstrably less effective
If your symptoms are chronic, your healthcare provider will move on to the next step