how long till prozac completely leaves your system
I took 20mg of Prozac for 4 days.. 4. See 2 more doctor answers. A while: Since you took prozac / fluoxetine for only 4 days, it should leave your system in about 1 - 2 weeks completely. In general, if someone has been taking Prozac for a while (longer than two weeks), it can take up to 5 weeks to completely wash it out of ones system.