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The body's capacity to absorb B12 from food is naturally limited by intrinsic factor, a protein produced in the stomach that binds to B12 and facilitates its absorption in the small intestine

Ideal candidates typically include adults interested in proactive aging interventions who have realistic expectations about current evidence limitations

The poor blood supply to tendons creates a healing bottleneck

The following situations are particularly risky: - Long-term use of very high-dose preparations (from 1,000 g daily for months/years) without medical supervision

Thanks If my memory serves me well I believe you would need about 10mls of air direct into a vein to cause an air embolism so I wouldnt worry about a tiny amount re subcutaneous and IM