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A 37-year-old member asked:

How long does 10mg of prozac (fluoxetine) take to get into your blood system to feel effects?

1 doctor answer6 doctors weighed in
Dr. Mark Reynolds
Psychiatry 34 years experience
Prozac (fluoxetine): The time to onset of action of an antidepressant, including prozac, (fluoxetine) depends upon a number of factors including the condition being treated. That being said, you can generally expect one to two weeks to start to notice the clinical effect and 4-6 weeks to safely evaluate the full effect of any particular dose in the treatment of depression. Side effects, if present, can be experienced sooner.

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Similar questions

A 47-year-old member asked:

How long does it take to begin feeling the effects of prozac (fluoxetine)?

2 doctor answers4 doctors weighed in
Dr. Barbara A Majeroni
Specializes in Family Medicine
About 6 weeks: Many antidepressants require 4 to 6 weeks to build up to a therapeutic level in the body.
A 36-year-old member asked:

How long approximately does it take for Prozac (fluoxetine) to get out of your system totally?

1 doctor answer2 doctors weighed in
Dr. Alan Ali
Dr. Alan Alianswered
Psychiatry 33 years experience
Prozac (fluoxetine): Has half-life of up to 72 hours, so that multiplied by 5 means that it can stay in your system for up to 2 weeks or so.
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.
Last updated Oct 8, 2018


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