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FOLR1-Related Cerebral Folate Transport Deficiency
How Vitamin B12 Injections Work in the Body Unlike tablets, injections bypass the digestive system
Boonen S, Rosen C, Bouillon R, Sommer A, McKay M, Rosen D, Adams S, Broos P, Lenaerts J, Raus J, Vanderschueren D, Geusens P
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Patient reviews show methylcobalamin produces "immediate effect" reports 23% more often than cyanocobalamin, though both achieve equivalent serum B12 elevation at 7 days
One sailed through safety trials but stumbled on efficacy
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