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 answer • 6 doctors weighed in

Dr. Mark Reynoldsanswered
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.
5.7k viewsReviewed >2 years ago
Similar questions
A 47-year-old member asked:
How long does it take to begin feeling the effects of prozac (fluoxetine)?
2 doctor answers • 4 doctors weighed in

Dr. Barbara A Majeronianswered
Specializes in Family Medicine
About 6 weeks: Many antidepressants require 4 to 6 weeks to build up to a therapeutic level in the body.
6.4k viewsAnswered >2 years ago
A 36-year-old member asked:
How long approximately does it take for Prozac (fluoxetine) to get out of your system totally?
1 doctor answer • 2 doctors weighed in

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.
5.7k viewsReviewed >2 years ago
CA
A 37-year-old member asked:
How long will it take for Prozac (fluoxetine) to leave my system?
1 doctor answer • 1 doctor weighed in

Dr. Donald Hazlettanswered
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.
6.3k viewsAnswered >2 years ago
Last updated Oct 8, 2018
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