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Methylphenidate

What the body does with Methylphenidate, 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.

Methylphenidatetakenritalinic acidmetaboliteExitUrine (90%)

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

    ~20–60 minutes, depending on formulation 1

  2. doseabsorbed

    Bioavailability

    Oral: ~30% (range: 11–52%) 1

  3. hoursbreakdown

    Metabolism

    Liver (80%) mostly CES1-mediated 1

  4. hoursmade from it

    Metabolites

    α-phenyl-2-piperidine acetic acid (ritalinic acid) 1

  5. half-lifehalf gone

    Elimination half-life

    2—3 hours 1

  6. durationeffects

    Duration of action

    IR dosing: 3–4 hours; ER dosing: 8–12 hours 1

  7. exitleaves the body

    Excretion

    Urine (90%) 1

Source

  1. Wikipedia, Methylphenidate, drug infobox (revision 1378753148), 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.