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It should be used regularly at evenly spaced time intervals as prescribed by your doctor
Its not routinely tested and even when tested the lower end of the reference range is inadequate for defining deficiency status
Lyophilized: Hold the dry vial frozen at 20 C (4 F) until mixing
Schijns W, Homan J, van der Meer L et al (2018) efficacy of oral compared with intramuscular vitamin B-12 supplementation after Roux-en-Y gastric bypass: a randomized controlled trial
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Common reports include injection-site stinging, nausea, headache, flushing, and short-term fatigue
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