No, because retinoids act through different receptors and have a strong track record for photoaging and acne, while copper peptides work through different signals and targets
Since the replacement of Gly with basic d-Arg in position 6 caused the local anaphylactoid reaction, new analogs with neutral d-ureidoalkyl amino acids, such as d-citruline at position 6were synthesized by our group 20
and APC 6002 (361 HCT/P Skin Substitute Products)
These would be considered approved B12 forms for thyroid patients: Methylcobalamin Hydroxycobalamin (5) Adenosylcobalamin (6) What types of B12 should you avoid
Additional sources: NCBI, supplier data on purity 99%, lyophilized form, research-only status.
BPC-157 also directly counteracts inflammatory mediatorsit lowers pro-inflammatory cytokines and increases anti-inflammatory factors at injury sites [5]