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But the right form, dose, and route depend entirely on why youre deficient and some causes (like pernicious anemia or malabsorption) wont respond to oral supplements at standard doses no matter how many you take
Also I'm not taking B12 injections anymore
That level of transparency doesn't exist in supplement marketing, and it's why researchers increasingly trust community-aggregated data over vendor claims
Whether that translates to the dramatic benefits some users report requires the clinical trials that have not yet been conducted
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