Is it alright if i take advil before i go to the gym?

when i do arms my right wrist kills because i jerk it to much so would it be okay if i take advil before i go to the gym keep in mind im not doing cardio....also mega men sport dietary supplement should i take that before and/or after the gym? or like when i wake up and fall asleep thank you very much.(im 15 if that is of any benefit)