I tore my labrum last spring and got surgery in the summer. I'm clear to lift now and I'm back hitting the gym. I will be a senior in high school next year and will start strongside linebacker, but I need to get a hell of a lot stronger. The only problem is my parents are convinced that if I return to the supplement pattern I was on, I'll mess my kidneys up. They said I can keep taking my pak, but no powder substances. Are pills better for your kidneys? Should I just try and find all the supplements (Creatine, protein, nitro) in pill form? or just lift without them?