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can i inject myself with b12 How to Give Injections at Home to Yourself · PA Relief can i buy b12 to
Description
They work differently, so "better" depends on what you're trying to address

A deficiency in B12 can slow down this process, resulting in thinner, lacklustre hair
Clinical context separates them

Several drugs, including colchicine, have been reported to reduce the absorption of methylcobalamin, vitamin B12

[28] [29] Consequently, an altered gene expression can possibly mediate impaired foetal growth and the programming of non-communicable diseases
FDA in 2014