why do people need vitamin b12 injections Injection Dosage Vitamin B12 injections vs tablets:

There is no established upper limit for B12 intake due to its low risk of toxicity

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This can manifest as redness, swelling, and sometimes pain

Based on this update, we estimate that total payments to OPPS providers (including beneficiary cost sharing and estimated changes in enrollment, utilization, and case mix) for calendar year (CY) 2026 will be approximately $101.0 billion, an increase of approximately $8.0 billion compared to estimated CY 2025 OPPS payments

According to the manufacturer, Rx B12 is best given with food or around a meal

For weight management, the target is 2.4 mg weekly via injection