bpc 157 acetate vs arginate oral bioavailability Most peptides aren’t orally bioavailable and they get broken down in the stomach. BPC-157 is a notable exception, especially the salt, which is the superior form when it comes to BPC-157: What the Evidence Actually
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10.1523/JNEUROSCI.22-15-06401.2002 [DOI] [PMC free article] [PubMed] [Google Scholar] Xie, R

In some cases of severe deficiency, a healthcare provider may suggest taking B12 supplements or getting B12 injections
Macrophage polarization in wound healing: A review of the M1/M2 axis

The Science Behind Vitamin B12 Injections Vitamin B12 plays a vital role in your body's overall functioning

Vitamin B12 shots are only available by prescription following a clinical diagnosis of low levels

BioDrugs 22 , 85100 (2008)
