can you inject vitamin b12 subcutaneous for Injection Cyanocobalamin 1,000 mcg, 25/Box (Rx) — Mountainside Medical B12 Injections at Home -

As long as 60 years ago, identification of the alternative IF-independent mechanism for vitamin B 12 absorption resulted in the discovery that if large enough doses were given, in the range of 100-100,000 g (although only 1% of the cyanocobalamin was absorbed), it was sufficient to provide the daily requirement

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Higher plants do not concentrate methylcobalamin from the soil, making them a poor source of the substance as compared with animal tissues

10.1186/s13098-019-0484-0 107 PicardF.KurtevM.ChungN.Topark-NgarmA.SenawongT.Machado De OliveiraR.et al (2004)

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de Luca C, Olefsky JM