bpc-157 + kpv benefits peptide vs bpc 157 Dosage Chart by Route TB-500 Peptide: Benefits, Dosage & – FDA's Review Of Peptides Signals

Yes, its essential for red blood cell formation

For example, in 2023 the FDA warned Warrior Labz (a SARMs and peptide site) that products like injectable BPC-157 are considered unapproved new drugs being sold illegally illustrating how doctors were obtaining it before the bust.)

Relative telomere length and mitochondrial DNA copy number variation with age: association with plasma folate and vitamin B12. Mitochondrion 51 (2020): 79-87.

This is despite some pretty compelling theoretical evidence like B12s role in hemoglobin formation, nucleic acid synthesis, and the methylation cycle that produces growth-supporting methionine