Can I Take a Pre Workout Supplement Whist on Oratane? (photo)

Hi there, ive been on oratane for 3 months now and i am clearing up very well, but i do like to gym and with being so i also take the normal gym supplements. i have stopped ever since i started on oratane, but i would just like some advise on if can can start taking a pre work out again? i have the biogen ultra pump nos, its got creatine in it and all the added extras to get you that boost and energy. i did ask my pharmacist and he said it will put extra stress on my liver. please advise thanks