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You might notice mild redness or soreness at the injection site
Riboflavin - Vitamin B2 (Fact Sheet)
PubMed 11713214 Stier H
When a significant B12 deficiency is corrected, your bone marrow suddenly starts making large numbers of new red blood cells, and that process pulls potassium out of the blood
[1] The consequences of untreated deficiency far outweigh the inconvenience of mild, manageable gastrointestinal symptoms
Always consult your healthcare provider before starting any new treatment
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