The frequency depends on your needs, similar to B12 injections alone
If you're dose is higher than 1mL, avoid injecting into the upper arm
Co-enzyme B12 also interacts with the enzyme methionine synthase (5-methyltetrahydrofolate-homocysteine methyltransferase), required for the conversion of homocysteine to methionine, which is essential for folic acid metabolism and the formation of thymine, which is a component of DNA
This water-soluble vitamin is essential for maintaining the health of nerve cells, one of the immune systems key activities
Reported ranges from research/community examples, not recommendations
Insulin syringes are marked in units (IU), but peptide doses are typically expressed in micrograms (mcg) or milligrams (mg)