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Taking B12 supplements with meals, adjusting doses, or switching formulations can significantly reduce stomach discomfort
Steadier energy
Some common side effects may include headache, nausea, runny nose, mild irritation in the nose, or dizziness
However, there is emerging research that suggests having too much vitamin B12 can do more harm than good
The calculator defaults to a 10 mg vial with a 10 mg/mL target concentration using bacteriostatic water, which requires 1.0 mL
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