Yes it is an Advocare product, and no you don't have to sign up you can buy it retail from a distributor...
Catalyst is pretty much amino acids(buidling blocks of protein) It protects your muscle so that your body does not use it for energy, instead it uses fat.
This product was formulated at the request of the coach, for the 1996 US Olympic wrestling team. The idea was to make sure they were the strongest in their weight class, instead of being the weaker wrestler in the next weight class. It quickly gained popularity once the secret was out
Product details and ingredients can be found here -
https://www.advocare.com/Microsite/I...bels/T2010.pdf