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On top of that, B12 is a unique water soluble vitamin because your body is great at storing it
Regardless of which peptides the FDA ultimately permits for compounding, one principle remains unchanged: higher-risk therapies deserve higher standards of quality assurance
This is a commonly referenced study from 1963 claiming a half-life of 5-6 days: nature.com/articles/198200a0 Although I would not cite it as an authority, the six-day half-life has also made it onto the B12 page in Wikipedia, seemingly unchallenged
In July 2018, I was retested after beginning b12 supplements just 2-3 weeks ago
Natural animal-based foods , such as liver, sardines, and eggs that are rich in B12
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