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Much of what is sold online is labeled research only, and the purity of those products is highly variable, with independent testing repeatedly finding under-dosed, degraded, or mislabeled peptides across the unregulated market

Dosing information Usual Adult Dose for Pernicious Anemia: Initial dose: 100 mcg intramuscularly or deep subcutaneous once a day for 6 to 7 days If clinical improvement and reticulocyte response is seen from the above dosing: 100 mcg every other day for 7 doses, then: 100 mcg every 3 to 4 days for 2 to 3 weeks, then: Maintenance dose: 100 to 1000 mcg monthly Duration of therapy: Life Comments: Administer concomitant folic acid if needed

Amounts of Vitamin B12 that are recommended by the Food and Nutrition Board, National Academy of Science-National Research Council for pregnant women (4 mcg daily) should be consumed during pregnancy

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