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2 Materials and methods 2.1 Protocol and registration This systematic review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement (Supplementary Table S1
Given their non-invasive nature and similar clinical performance, these routes may represent suitable alternatives to intramuscular therapy, particularly in settings requiring long-term management
Extra nutrients that work well with vitamin B12
Post-Gastrointestinal Surgery Patients: If youve undergone surgeries such as gastrectomy or weight loss surgery, we can help monitor and address any potential nutrient deficiencies, including B12
Taking certain medicines can interfere with how your body absorbs vitamin B12
