During my life I've probably taken every sports supplement under the sun, and the two things from an athletic perspective I can say definitely have given me consisten results is creatine and whey protein. I regulary interchange other things and take them out of habbit and for the lolz I guess, but I can't say I've noticed positive effects from anything else.

The last 6 months I've routinely taken vitamin D because I had read the literature and have noticed that all the illness that swpet through my family this year seemed mild as well. Might be that I've also been more diligent with hand sanitizer as well though. But yeah, creatine is amazing.