I decided to take a Paxil 2 days ago for the first time the day i took it i was prescribed oxycodone for pain i read online if it was safe to take both and it said no it could cause serotonin syndrome so now I am scared to take my oxycodone but I am in so much pain I need it so i was wondering how long does it take for that one 20 mg Paxil to get out of my system and when is it safe enough to take my oxycodone?