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Methenamine

What the body does with Methenamine, 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.

MethenaminetakenExitUrine: 70–90% unchanged within 24 hours

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. 0 → onsetdose

    Onset

    ≤30 minutes 1

  2. doseabsorbed

    Bioavailability

    High (≥70%) 1

  3. hoursbreakdown

    Metabolism

    Hydrolysis in acidic urine 1

  4. hoursmade from it

    Metabolites

    Formaldehyde; Ammonia; Formic acid 1

  5. half-lifehalf gone

    Elimination half-life

    2–6 hours 1

  6. exitleaves the body

    Excretion

    Urine: 70–90% unchanged within 24 hours 1

Source

  1. Wikipedia, Methenamine, drug infobox (revision 1334716397), 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.