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Some population groups such as older people, vegetarians, pregnant women, and patients with renal or intestinal diseases are at more risk of having vitamin B12 deficiency

Most occur early and improve with proper dosing and guidance

The case presented a rare complication that was severe and potentially lethal, with critical progression and difficult management, but, ultimately, a satisfactory outcome

Market Impact Considerations The potential addition of Pfizer's drug to the Canadian market comes at a time when Eli Lilly has already reduced prices for tirzepatide-based medications by 20% or more, effective December 29, 2025