The treatment of vitamin B₁₂deficiency is:

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The recommended treatment for vitamin B₁₂ deficiency is 1,000 mcg daily of oral cobalamin, which is an effective and convenient option for most patients. Option B (2 gm per day of oral cobalamin) is too high of a dosage and is unnecessary. Option C (Vitamin B₁₂ 100 mcg/day IM) may be needed for patients with severe deficiency or absorption problems, but it requires frequent injections and is more invasive. Option D (500 mcg/dose nasal cyanocobalamin 2 sprays once a week) is an alternative route of administration, but it is less effective than oral supplementation and may cause irritation or discomfort in some patients.

The Treatment of Vitamin B12 deficiency Is

The Treatment of Vitamin B₁₂deficiency Is