US$ 29.88
injections of vitamin b12 are used successfully to treat Why Your Injection Remains Prescription-Only Vitamin B12 Injection Dosage for
Description
Protein Synthesis: B12 plays a role in protein metabolism, which is vital for muscle repair and growth

When the body doesnt produce enough of it, it can have negative repercussions

B12 injections bypass the gut

S2CID 20350330
