How long does Amoxapine stay in your system?
Last updated September 8, 2026.
**It depends: amoxapine has an approximate 8 hour half-life while its main active metabolite has about a 30 hour half-life.** Most of the parent drug declines quickly and is largely gone within about 1 to 2 days, but the 8-hydroxy metabolite can take several days to clear, often up to about 6 days based on five half-lives. Clearance varies with age, liver or kidney function, dose, and interacting medicines, which can lengthen how long drug effects or side effects last. Talk with your clinician before stopping or changing your dose. citeturn0search14turn0search0
What to do
- **Review label:** Check the official prescribing information for exact pharmacology and dosing.
- **Talk to your clinician:** Ask before stopping or changing dose to avoid withdrawal or relapse.
- **Report side effects:** Seek care right away for severe symptoms like fainting or fast heartbeat.
- **Know interactions:** Tell your clinician about other medicines, supplements, and alcohol.
- **Monitor if older:** If you are older or have liver or kidney disease, expect slower clearance.
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