Inmates may not receive anything like protein shakes or protein powder from the outside. They are only allowed to buy items off of the commissary list. If protein powder is found in the possession of an inmate, it will be an immediate trip to the SHU and possible loss of good time, loss of commissary, phone and visitation privileges and likely a transfer to a one-level higher facility.
https://www.inmateaid.com/ask-the-inmate/how-does-an-inmate-get-protein-shakes-sent-to-them#answer
Accepted Answer Date Created: February 29,2016