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Highlighting that more isn't necessarily better, Wolfram explains that megadoses (over 2,000 mcg per day) are unwise
This is a key planning detail for multi-month protocols where reagent freshness influences data quality
It's also why benzyl alcohol concentration matters a vial that has been contaminated, frozen incorrectly, or stored too long may have degraded benzyl alcohol distribution, reducing its protective effect even if the water looks clear
Adults usually get 1000 to 2500 mcg of vitamin B12 in each injection
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