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monoamine reuptake inhibitor

Tesofensine half-life & how long it lasts

By Melvin Morina · Updated 2026-07-27 · investigational

Tesofensine has a half-life of about 9.2 days (220 hours), reaches peak concentration around 5 hours after a dose, and is practically cleared from the body about 45.8 days (1100 hours) after the last dose. Not a peptide. Its very long half-life of roughly 9 days means levels keep accumulating for weeks.

The numbers

Half-life9.2 days (220 hours)
Time to peak5 hours
Routeoral
Typical cadenceonce daily in trial protocols
Practically cleared45.8 days (1100 hours) after the last dose (five half-lives, ~97% eliminated)
Steady stateafter roughly 45.8 days (1100 hours) of continuous once daily in trial protocols dosing
Evidencelimited human data — directional only

What that means day to day

Sources

Track it instead of estimating it

Bo models this curve from your own logged doses, so you can see what is still in your system right now instead of doing the arithmetic. It also handles reconstitution math, dose reminders and injection-site rotation.

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Educational information only. Bo is a tracking app, not a medical device, and nothing here is medical advice, a dosing recommendation, or a substitute for your prescriber. Half-lives are population averages from the sources cited on each row; individual clearance varies with body weight, kidney and liver function, and other medication.