Well, that depends. Some people like to take the prescribed pain meds 45 min to 1 hour prior to their PT session. They feel this allows them to tolerate completing their exercises without as much pain as they would if they had taken nothing. Others like to wait till after the PT session, almost like the proverbial carrot in front of the donkey to help motivate them through their treatment. The overall goal is for you to taper off of the medications to where you are able to tolerate the treatment sessions without any pain medications.