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How Long Does Prozac Stay In The Body System?

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Posted on Thu, 16 Nov 2017
Question: how long does Prozac stay in ones system?
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Answered by Dr. Prof. Kunal Saha (2 hours later)
Brief Answer:
Metabolites can be in your system for about 3 months.

Detailed Answer:
Thanks for asking on HealthcareMagic.

I have gone carefully through your query and understand your concerns. The elimination half-life of Prozac (fluoxetine) ranges from 2 to 7 days. Complete systemic clearance of fluoxetine is therefore likely to take anywhere from 11 to 38.5 days after stopping. However, just because the fluoxetine will have likely been cleared from your body in under 39 days does not mean that its metabolites like norfluoxetine will have also been excreted. They will take 22 and 82.5 days to clear out. In other words, it’s likely to take between 1 and 3 months to have fully excreted Prozac and its metabolites following your final dose.

Let me know if I could help further.

Regards
Note: For more detailed guidance, please consult an Internal Medicine Specialist, with your latest reports. Click here..

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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Answered by
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Dr. Prof. Kunal Saha

General & Family Physician

Practicing since :1954

Answered : 4467 Questions

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How Long Does Prozac Stay In The Body System?

Brief Answer: Metabolites can be in your system for about 3 months. Detailed Answer: Thanks for asking on HealthcareMagic. I have gone carefully through your query and understand your concerns. The elimination half-life of Prozac (fluoxetine) ranges from 2 to 7 days. Complete systemic clearance of fluoxetine is therefore likely to take anywhere from 11 to 38.5 days after stopping. However, just because the fluoxetine will have likely been cleared from your body in under 39 days does not mean that its metabolites like norfluoxetine will have also been excreted. They will take 22 and 82.5 days to clear out. In other words, it’s likely to take between 1 and 3 months to have fully excreted Prozac and its metabolites following your final dose. Let me know if I could help further. Regards