AOD-9604 is generally regarded as well-tolerated
Even considering all of these factors you need to understand that checking vitamin B12 levels in the serum still isnt the best way to evaluate for B12 deficiency
You can basically look up a lot of different things that you use, and then they rate every single ingredient in it, and then they give it a toxicity score of 1 to 10, I think, or 1 to 8
Biomarker discovery of diseases An increasing number of lactylated proteins and sites have been identified, revealing their potential as biomarkers for the early diagnosis and monitoring of diseases
(AIs are established when there is insufficient information to determine EARs and RDAs.) For children ages 113 years, the RDA increases with age from 0.9 to 1.8 g/day
Dexter DT, Sian J, Rose S, Hindmarsh JG, Mann VM, Cooper JM et al