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In the references from this same document we find this in Canadian paper Cobalamin (vitamin B12) and Folate Deficiency Canada use cyancobalamin they state Injection (IM or subcut): 1000 mcg/mL Where they state : 1 mg hydroxocobalamin administered subcutaneously once per week Many people have no choice but to buy safely and cheaply from online pharmacies in order to keep themselves well in the absence of any help from their GP
References: Seiwerth S, Milavic M, Vukojevic J, Gojkovic S, Krezic I, Vuletic LB, Pavlov KH, Petrovic A, Sikiric S, Vranes H, Prtoric A, Zizek H, Durasin T, Dobric I, Staresinic M, Strbe S, Knezevic M, Sola M, Kokot A, Sever M, Lovric E, Skrtic A, Blagaic AB, Sikiric P
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