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For those with a high out-of-pocket burden, we discuss dosing frequency adjustments to balance budget with effectiveness

If left untreated, a vitamin B12 deficiency can cause weakness, exhaustion, anemia, and even nerve issues
Identity and Lot Documentation Identity verification and lot-specific documentation are provided to maintain material traceability within controlled research environments

You have undergone gastrointestinal or weight loss surgery

Foods that contain high levels of B-12 include eggs, milk, cheese and other dairy products, poultry, fish and shellfish