Although it is eliminated relatively slowly, it should definitely be out of your system by now.
It takes approximately 5 and a HALF "half lives" of a drug for it to be eliminated from your system.
Fluoxetine has a half life of 4 to 6 days (after long term or multiple dosing).
It's active metabolite norfluoxetine has a longer half life of 9.3 days (after multiple dosing).
So fluoxetine would be out of your system in about 33 days (about a month), and norfluoxetine is out by approximately 51.1 days or about 2 months.
But Prozac leaving the system also depends on your weight and size and how much you were on. But 7 months, you are assured that it is out of your system. Was there a replacement for this pill? Did your doctor take you off of it? If not you should touch basis with him/her.
I wish you the best
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