For patients without absorption disorders, high-dose oral B12 supplements (1,000-2,000 mcg daily) have been shown to be comparably effective to injections in correcting mild to moderate deficiency
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When Oral Supplements Are A Great Choice If your B12 deficiency is purely down to your diet, high-dose oral supplements can be an excellent and affordable alternative
This mechanism bypasses the need for intrinsic factor entirely
This is especially relevant for people with hormone optimization protocols who may be taking thyroid medications, hormone replacement therapy, or other compounds that depend on consistent absorption patterns
Use the quick-select buttons for standard protocols: 250mcg daily, 500mcg BID, or 1mg research dose