Mefenorex

What the body turns Mefenorex into, as its Wikipedia article records it.

Quoted from Wikipedia, not yet written up by hand. Its infobox gives no timings, so this shows only what the article text says it turns into.

hoursfrom the article text
What else it turns into
“Mefenorex is a prodrug of amphetamine; upon ingestion, the compound will begin to metabolize into, as well as promote the production of, the active metabolites levoamphetamine and dextroamphetamine.” ¹

Source

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