bpc 157 pros cons BPC-157 Benefits, Dosage & Before/After Results Peptide Therapy for Pain Management
Description
Metformin recipients also had significantly higher levels of homocysteine and methylmalonic acid (markers of B12 deficiency) and significantly worse scores on standardised clinical assessments of the severity of neuropathy

Given the rise in autoimmunity, side effects of multiple medications affecting this pathway and crashing levels of soil cobalt due to glyphosate this why this pathway is wrecked in so many people and why injection are needed by so many and often at high frequency.
You are over the age of 50 (when stomach acid naturally declines)

The injection site can affect absorption rate slightly but does not significantly impact overall effectiveness

[DOI] [PubMed] [Google Scholar] 11.Sikiric: P., Udovicic M., Barisic I., Balenovic D., Zivanovic Posilovic G., Strinic D., Uzun S., Sikiric S., Krezic I., Zizek H., et al

Blood (2014) 124:2126
