The resulting elevated concentrations of homocysteine and MMA are often found in patients with low serum vitamin B 12 and can usually be lowered with successful vitamin B 12 replacement therapy
These injections are typically administered intramuscularlymeaning they go directly into your muscle for fast absorption
NCBI Bookshelf Best practices for injection (asepsis, preparation, and administration) Related research, protocols, and guides Explore the available research context, protocol variants or comparisons, and practical guides
S2CID 120110443
When to Consider Vitamin B12 Injections If You Have a Deficiency : People who have been diagnosed with a vitamin B12 deficiency, especially those with underlying health conditions that affect absorption, may benefit from the rapid absorption and higher bioavailability offered by injections
When not taken too late in the day, Vitamin B12 can help promote deeper, healthier sleep