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All products and medications are manufactured and distributed by independent, third-party vendor pharmacies and are routinely inspected by both state and federal agencies for safety and efficacy
Vitamin B 12 from foods appear to have different absorption rates with better absorption from chicken and beef as compared to eggs
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Individual factors such as metabolic rate, body weight, and age may theoretically influence how B12 is distributed and utilised, though evidence for their impact on injection intervals is limited
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