[DOI] [PubMed] [Google Scholar] 31.Sukla KK, Tiwari PK, Kumar A, Raman R
STORAGE Lyophilized -20 C 24 months Reconstituted 2-8 C, 28 days PEER-REVIEWED EVIDENCE Heffernan M, et al
Summary: Vitamin B12 injections for pernicious anaemia deliver hydroxocobalamin intramuscularly to bypass malabsorption caused by lack of intrinsic factor, rapidly correcting deficiency and preventing neurological damage
A 2021 peer-reviewed review of NNMT in obesity and type 2 diabetes states explicitly that 'clinical trials targeting NNMT have not been reported' meaning every quantitative efficacy figure available for this compound comes from mice, and there is currently zero published human efficacy data
Regular or heavy alcohol consumption can interfere with the body's ability to absorb Vitamin B12 from the gut, making the supplement less effective