If you have gone off all your meds and experienced relapse of symptoms it means you need to taper off the medication.

Your doctor should not be telling you to go off medication without any kind of viable plan. Period. It's not safe and you want to minimize the side effects by lowering it more slowly. You'll have greater success going off.

It says that the half life is 20-40 hours, which means it should be out of your blood within a week or two. However, you should still talk to your doctor about serotonin discontinuation syndrome so you're prepared if you happen to be an individual that experiences this from dropping antidepressants.