can you inject b12 in your thigh How to Give Yourself Intramuscular (IM) Injections | Patients & Families What Happens If You Inject

Combined with reduced intrinsic factor, makes deficiency progressively more common over 60

28 Up to 28% of patients with vitamin B12 deficiency experience neuropsychiatric abnormalities even without hematological signs

So injecting beyond a certain point may cause your cells to fight off the excess B12 so hard that it might reduce the amount of active cellular B12 - probably not to dangerous levels, but possibly sufficient to trigger some symptoms

If left untreated, the condition could increase the risk of several complications such as severe skin infections, vision loss and other neurological problems

Summary: Metformin commonly reduces vitamin B12 levels by interfering with calcium-dependent absorption in the terminal ileum, particularly with long-term use and higher doses