The Gold's I go to, besides sells various things like energy drinks and gallons of water and Musclemilk, also has both Spike Shooter and the regular sized Spike.
some 7-11s carry Spike
to answer your question, my gym doesn't sell any supplements
My 7-11 sells Spike, my gym sells Spike (the 7-11 just got shotguns, the gym hasn't and I don't think they will).
My gym also sells HOT-ROX, maybe 1 other that I can't remember.