self injection b12 Nearly Painless Self-Injection Process B12 METHYLCOBALAMIN SELF INJECTION KIT
Description
Cognitive issues like memory loss, difficulty concentrating, or mood swings may also indicate a deficiency

Quickstart Highlights 5-Amino-1MQ dosage protocols center on this selective, cell-permeable NNMT (Nicotinamide N-methyltransferase) inhibitor studied for its potential to support fat metabolism, preserve lean muscle mass, and elevate intracellular NAD+ levels

Does genetic testing predict MIC-B12 response

So best bet would be to continue with that while also looking for another cause
