Specifically, eligible studies included participants (P) with a confirmed diagnosis of vitamin B12 deficiency, interventions (I) involving oral or sublingual vitamin B12 administration, comparators (C) using intramuscular supplementation, and outcomes (O) reporting changes in serum vitamin B12 or homocysteine levels
However, it is advisable to consult a healthcare professional before initiating any supplementation or treatment regimen
Storage: Lyophilized: freeze at 20 C (4 F)
Typically, 1 ampoule 2-3 times weekly for therapeutic use, or once weekly/monthly for maintenance, administered intramuscularly or intravenously
However, allergic reactions are possible, although rare
We only have vitamins with a hypoallergenic and safe preservative called Benzyl Alcohol, which is found in naturally-occurring plant products