vaccine information sheet for cyanocobalamin b12 injectable Statements (VISs) Overview Cyanocobalamin (Vitamin B12) Med Sheet
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As to the aches and pains, breathlessness etc, this could be due to B12 needing potassium to build RBC, so I would check out low potassium symptoms and eat a banana or maybe two until you have fathomed it out
Vitamin B12 Blood Test FAQs What does a high vitamin B12 indicate
However, the Reference Daily Intake suggests a slightly higher amount of 2.4 micrograms, with increased requirements for pregnant or nursing individuals

People experiencing heart palpitations, confusion, dementia, weakness, and appetite loss should also get the vitamin b12 test done
