The underlying driver is chronic inflammationspecifically, dysregulated immune signaling involving TNF-, interleukins (IL-17, IL-23), and NF-B pathways
BPC-157 offers relief by: Protecting endothelial lining inside joints Reducing cytokine-driven inflammation in joint capsules Stimulating synovial membrane healing Applications : Shoulder impingement Meniscus irritation Cartilage thinning or wear Generalized wear-and-tear joint pain Intra-articular BPC-157 showed protective effects against cartilage degeneration and promoted joint capsule healing in models of induced arthritis. Sikiric et al., Medical Hypotheses 4
As to the aches and pains, breathlessness etc, this could be due to B12 needing potassium to build RBC, so I would check out low potassium symptoms and eat a banana or maybe two until you have fathomed it out
Its impact on neurotransmitters directly influences satiety and hunger signals in the brain
What you can clearly see is that the muscle heals dramatically faster with BPC-157 treatment