Hi, theres quite a few supplements out there, but the few ive found to actually work are:
Creatine: strength, endurance, recovery, bulk (from creatine deposits in the muscles)
L-Glutamine: Raw strength & power, bulk (from development of new muscle tissue)
Along with a good food regime these supplements and protein shakes can make huge differences, from my experience. If youre not actively weight training you wouldnt really need a shake as a protein supp, just try to get all your protein from sensible eating. Hope this helps.
I wouldnt advise anyone to take supplements as we dont really know whats in them! Many people who sell them use false scientific information as a selling gimic just to get rich.
Steroids many years ago were deemed safe and undamaging to the body and after 2-3 decades later, well we all know how dangerous and illegal they are now. Perhaps in another 2-3 decades the same problems will occur with these new supplements.
Train hard and eat a healthy diet and you wont need any supplements.:-D