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A 46-year-old member asked:

How long does prozac (fluoxetine) stay in your system?

1 doctor answer3 doctors weighed in
Dr. Marc Zimmermann
Psychiatry 23 years experience
More than 2 weeks: The half life of this medication is as long as three days. It will be out of your system in 15 days depending on individual factors related to the patient. Ask your prescriber.

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Similar questions

Saranac Lake, NY
A 54-year-old female asked:

How long does Prozac (fluoxetine) have to be in your system before it starts to work?

1 doctor answer6 doctors weighed in
Dr. Pamela Pappas
Psychiatry 43 years experience
Prozac (fluoxetine): Like other antidepressants, Prozac (fluoxetine) generally requires at least 4-6 weeks' consistent dosing for therapeutic effectiveness. You may experience some benefit before this, however.
A 37-year-old member asked:

How long before 3 doses of Prozac (fluoxetine) outvof system?

2 doctor answers5 doctors weighed in
Dr. AUSTINA CHO
Psychiatry 27 years experience
2 wks: I am not sure if you mean the 3 doses of Prozac were taking at the same time or different days. It usually takes 2 wks to wash Prozac out of the system b/c of the long half life of the active metabolite of prozac, norfluoxetine.
CA
A 37-year-old member asked:

How long will it take for Prozac (fluoxetine) to leave my system?

1 doctor answer1 doctor weighed in
Dr. Donald Hazlett
Psychiatry 55 years experience
Quite a while: Prozac (fluoxetine) taken over a period of three or more months, then stopped, can show the presence of fluoxetine for five or more weeks. Prozac has both a right and left isomer (like looking at yourself in the mirror and raising your hand and watching your raised r hand appear to be your l hand). Breakdown of fluoxetine yields nor-fluoxetine which lasts 2 x as long in the body as fluoxetine.
A 57-year-old male asked:

How long Prozac (fluoxetine) could be taken?

6 doctor answers11 doctors weighed in
Dr. Eric Farbman
Neurology 27 years experience
Possibly forever: People have been on Prozac (fluoxetine) for 20+ years. There does not appear to be any maximum time or any reason to discontinue it if is working.
Last updated Nov 27, 2017
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