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They both are USP meaning they have an official monograph or documentation by the United States Pharmacopeia, both are not used for IV solutions

The vitamin is then picked up by a protein called intrinsic factor, which is produced by parietal cells in the stomach lining

[3] Similarly, some solid tumours may produce these binding proteins

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Some research has shown that epinephrine also increases the duration of lidocaine

Intake of vegetables, fruits, carotenoids and vitamins C and E and pancreatic cancer risk in The Netherlands Cohort Study