how much b12 is given with injections Benefits of for Optimal Health Vitamin B12 Injections: Unlock Energy,
Description
Sterile & single-use Prevents infection and ensures maximum hygiene

Preferred subcutaneous sites include the abdomen and the outer upper arms, providing straightforward access for individuals administering their own injections: Abdomen: Injections are given at least two inches away from the navel, allowing for a broad area of fat tissue

Blood tests can confirm deficiency, but even people with normal lab results sometimes benefit from Methyl B12 due to poor absorption or methylation
If you are going to explore peptide therapeutics, I highly, highly recommend, indeed, I implore you to do so with a board certified physician and to acquire peptides through a reliable source where the LPS has been removed, which typically means from a pharma company Or from a compounding pharmacy

Ivanovska, M
