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It is strictly designated for laboratory research only and is not approved for human or animal administration
Oral versions such as capsules or troches are more convenient, but absorption through the digestive tract is far less consistent, so the amount that actually reaches circulation can vary widely
PMCID: PMC5516223
Once reconstituted, material should be held at 4 degrees Celsius for short-term use or below minus 18 degrees Celsius for longer-term storage
Unlike fat-soluble vitamins, B12 doesnt accumulate to dangerous levels, though rare complications like pulmonary edema or blood clot formation have been reported with extremely high doses in susceptible individuals
Before your visit You dont need to fast or prepare in any special way
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