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Vitamin B12

What the body does with Vitamin B12, from the dose to the exit, as its Wikipedia drug infobox records it.

Quoted from the Wikipedia infobox, not yet written up by hand. The order is the usual order of events, not a measured schedule.

Vitamin B12takenExitKidney

The clock, on a log scale

Each bar runs from the dose to about five half-lives, roughly when 97% of that molecule has been converted or cleared. The scale is logarithmic so minutes and days fit on one line.

  1. doseabsorbed

    Bioavailability

    Readily absorbed in the distal half of the ileum. 1

  2. hoursbreakdown

    Metabolism

    Liver 1

  3. half-lifehalf gone

    Elimination half-life

    Approximately 6 days; (400 days in the liver). 1

  4. exitleaves the body

    Excretion

    Kidney 1

Source

  1. Wikipedia, Vitamin B12, drug infobox (revision 1376408665), CC BY-SA 4.0. Values quoted as they appear, with wiki markup removed.

Half-lives vary between people, doses and routes. This page explains what the body does with a drug. It is not dosing advice.