Protein, BCAA, Vit D 4000 IU,, good creatine. Not sure past there.
I saw a list of what is not allow once and was like WTF?? These guys cant take the majority of products like Test booster, AI's etc.
There are a decent amount of PH's that will clear your system during the off season so I am not sure if thats a road you want to go down due to failing a drug test.
I went to the same High school as the QB did when was in school and hung out with lots of players all year, from what i remember only 10% of the team was tested at random.
Lots of guys ran test right when i season ended for a short period of time.