bpc-157 for tendons Peptide Therapy Pain Management and Healing BPC 157 Before and After:
Description
These juices help to protect the gut while also healing it

Why not just take the luteinizing hormone itself

Most patients begin noticing cognitive improvements within the first two to three weeks, with full benefits building over the complete 8-week active phase

(accessed 24 March 2018)

In the U.S., injectable B12 (cyanocobalamin and hydroxocobalamin) is only available with a prescription, as regulated by the FDA
The 20-30 hour half-life means the peptide still distributes systemically regardless of site, so any local-only effect is partial at best