Many automatically think that if you have an MTHFR defect, then you need the B12 form, methylcobalamin, but this is simply NOT true
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[19] Other than that, though, B12 injections are considered to be quite safe, so try not to worry about doing it "wrong." As long as you wash your hands, work in a sterile environment, and inject into the proper site using the correct technique, you'll do great.Thanks Tips Store vitamin B12 injection medication at room temperature, away from moisture, heat, and light
However, like many high-purity research peptides, it is sensitive to moisture exposure and prolonged light, which can accelerate degradation