The break is not about tolerance, since neither peptide has a well described desensitization mechanism
BPC-157-treated rats showed reduced valgus instability, higher load-to-failure values, and better collagen fiber organization at 14, 30, 45, and 90 days
Tendons in particular are slow to heal, as Cleveland Clinic notes in its overview of why injured tendons recover slowly, which is part of why chronic tendinopathy is a common reason patients ask about regenerative peptides
Here are the protocols supported by current research and clinical observations
What about oral supplementation
Clinical research shows that concentrations within this range are effective for increasing collagen production, reducing wrinkles, and improving skin tone without causing irritation