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In two trials employing 1000 g/day oral vitamin B 12 , there was no clinically relevant difference in vitamin B 12 levels when compared with IM vitamin B 12
Causes of Vitamin B12 deficiency The most common cause of B12 deficiency is a condition called pernicious anaemia
Scientific References Journal of Pharmaceutical Sciences Analysis of the antimicrobial efficacy and stability of benzyl alcohol in aqueous solutions
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