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2004, pp
Remember, the duration of efficacy of a B12 shot is an estimate and varies from person to person
"Bulk Drug Substances Nominated for Use in Compounding Under Section 503A of the Federal Food, Drug, and Cosmetic Act, Category 2 substances." FDA Docket 2022
By 1955, British chemist Dorothy Crowfoot Hodgkin (1910-1994) of Cambridge University determined the molecular structure of cyanocobalamin using computer-assisted x-ray crystallography, work for which she received the 1964 Nobel Prize in Chemistry (139)
This evidence-based approach avoids unnecessary supplementation costs and simplifies the protocol for people who do not need additional b12
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