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A peer-reviewed study by the National Institutes of Health shows that B12 absorption depends on the presence of intrinsic factors in the stomach
VeterinarianVeterinarianExpert AnswerPercorten should be given by intramuscular injection
PMC3359723 Pickart, L., et al
Most patients feel a noticeable energy boost within 2472 hours after receiving their B12 shot
But research suggests that inositol may have many potential health benefits
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