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[55] Vitamin B 12 serum levels are used to detect its deficiency, but do not distinguish its causes
(Unless you already have your levels on fleek, in which case kudos !) Okay, so B12 prob wont cause headaches if youre getting the right dose
LAB-TESTED & USA MADE: Every bottle is produced by Neurogan in a GMP-certified San Diego facility and verified through third-party testing for purity and consistency
Determining your personal response requires trial, ideally with some attempt at blinding to reduce bias
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