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what happens if you inject b12 wrong Feeling worse after Injection: Answering concerns Side Effects of Vitamin B12
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Biochem Biophys Res Commun 467:491496

This study must be considered as a preliminary study that provides data on cardiovascular effects of oral water
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In a trial involving 74 patients comparing vitamin B12 supplementation with 500 g/day versus 1500 g/day after 3 months of treatment, 8% of those on the lower dose had deficient levels versus none on the higher dose (17)
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