OTC supps, but, some of those OTC supps are a bit grey market if you ask me
. I never really used creatine though. But, I was benching 300lbs within about 11 months of training, so it was just a naturally strong lift...that and deads. Squats, not so much. Ha, ha. I've got a 6'4" wingspan though, on a 5'10" guy my arms aren't built for benching. My shoulders and chest makeup for it though (hence the problem getting fitted in suits).
Having said that, definitely don't belittle that 315 bench. That's when you're really starting to put up some big weight. 225 is like "okay, you can join the weight lifters club little guy", but 315 is like "lets buy this guy a beer", if you know what I mean
405+ is just kind of scary. I never maxed out b/c my wrists are weak and I was afraid of dropping 4+ plates on my chest and have it roll back on my neck
.