Patients with pernicious anemia must receive injections of which medication for the rest of their lives?

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The standard treatment includes initiating vitamin B₁₂ replacement therapy. Without vitamin B₁₂ administration, these individuals will die in 1 to 3 years. Treatment is 1,000 units of vitamin B₁₂ administered intramuscularly daily for weeks, then weekly for 1 month, and finally monthly for life.

Patients with Pernicious Anemia Must Receive Injections of Which Medication