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For beginners, start with 150 mcg daily for the first week to assess tolerance
Think of it as a two-part journey: a powerful initial push, followed by a steady, long-term cruise
Jul 1, 2026 For Licensed Providers
This intensive initial treatment rapidly replenishes depleted B12 stores and addresses acute symptoms
The causes vary from iron or vitamin B12 deficiency to inherited conditions like thalassemia and sickle cell disease
Drug interactions Vitamin C can interact with some other medications
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