Judging by social media posts, it appears Braxton is an Advocare distributor: https://www.advocare.com/150370655/Mobile/Default.aspx

(there's more pics of his reppin but can't post from my mobile - but seems legit it's THE Braxton Miller)

The details about being a distributor are curious:  http://orderthe24daychallenge.com/advocare-distributor/

As far as using your fame to make sales, I'm sure the NCAA is a turd about that. Just curious about the whole Advocare sales set up and how that works - whether it be used only for discounts or to make a commission. Seems like a gray area in the NCAA athlete employment rules.