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For a 2.5mg (2,500mcg) dose: 2,500 / 5,000 x 100 = 50 units
Over-the-counter supplements typically contain 102,000 micrograms per dosefar exceeding physiological requirements
Discard any remaining solution after that, even if the vial still has liquid in it
High homocysteine is toxic to blood vessels and brain cells, increasing your risk of heart disease, cognitive decline, and mood disorders
Bibcode:1977Sci...196.1410E
That means treating a deficiency as soon as possible is crucial. If you are experiencing any symptoms that may lead you to think you are deficient in vitamin B12 talk to your primary care physician and ask them to take a blood test, says Gans
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