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Common causes of B12 deficiency include: vegan or vegetarian diet, age 50+, acid reflux medication (PPIs), digestive disorders, birth control use, heavy alcohol intake, and celiac disease
Compounding pharmacies, regulated by the FDA and state boards, create personalized formulations under stringent quality controls, ensuring purity, accurate dosing, and sterilityreducing risks of contamination or substandard products.[41][42][43] These are tailored for human use under medical supervision, often with third-party testing
Many stack both
This is the most common research configuration
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