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b12 injection palpitations Vitamin and Heart Explained Why Do I Feel Worse
Description
Therefore, before supplementation is stopped, it is possible, and even recommended, to exceed normal serum cobalamin concentrations in treated patients [46]

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The range of time that B12 injections can last will depend on factors like a persons metabolism and how often the injections occur
doi:10.1007/s10068-018-0469-z el-Sabban F, Radwan GM
