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However, excessively concentrated solutions may cause irritation that paradoxically reduces absorption by triggering protective mucus secretion
For patients with severe deficiency or conditions such as pernicious anemia, our team may recommend an initial loading phase, which often involves administering 1000 mcg of B12 intramuscularly or subcutaneously daily or every other day for one to two weeks
Injection-site reactions (redness, swelling) occur in 58% of users
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