FAQ What is the normal dose of B12 injection for adults
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Strictly Research Use Only (RUO)
Research suggests methylcobalamin stays in the body longer while cyanocobalamin may be more easily absorbed, but other studies have found little difference in the two in absorption and retention
Call your health care provider immediately if you are experiencing any signs of an allergic reaction: skin rash, itching or hives, swelling of the face, lips, or tongue, blue tint to skin, chest tightness, pain, difficulty breathing, wheezing, dizziness, red, swollen painful area on the leg
PMID 16585128