Iifting weights gym

Hello, i am about to start 20mg daily and maybe reducing to 10mg in the future. After reading about accutane, i am abit scared of lifting in the gym (4x per week ). Is it realy "bad" to go heavy even on a low dose like 20-10mg ? By bad i mean elevated creatin kinase levels in the blood. I dont want to give up again after making decent progress now lol