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Safety and Compliance This product is strictly for laboratory research by qualified professionals

"Serum vitamin B12 concentrations and atrophic gastritis in older New Zealanders"

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[1] Other rare side effects noted (mostly in older literature or high-dose use) include: polycythemia vera and peripheral vascular thrombosis in patients receiving repeated injections (though these associations are not well understood, they were listed in prior product literature as possible adverse events)

The average diet supplies about 5 to 15 mcg/day of vitamin B 12in a protein-bound form that is available for absorption after normal digestion

Paolella, L