bpc 157 transdermal gel The Human Lab Rats Injecting Themselves with Peptides | Office for Science and Society What is BPC-157? | Everything
Description
Thats because vitamin B12 is bound to protein and can only be released by digestive substances in the stomach (hydrochloric acid and gastric protease) to be absorbed

The B12 delivery methods require several days to weeks to produce noticeable effects because of their absorption speeds

Additionally, because injections bypass the digestive system, they are not subject to the exact breakdown and loss of potency that can occur during digestion

J Neurosci 41:13711392
