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By restoring your B12 levels, injections may lead to noticeable improvements in mental clarity, focus, and mood
Also, peptides in oral supplements are digested just like your food, so they don't enter your bloodstream intact
Animal research used weight-based dosing roughly in the range of 10 mcg per kg, which for a 80 kg human would be approximately 800 mcg per day, though extrapolation from rodent to human dose is not straightforward and this is not a clinical recommendation
& DiMarchi, R
It exists in a regulatory grey area as a research chemical
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