Just days after a revealing report from ESPN’s Outside the Lines, the Nevada State Athletic Commission (NSAC) agreed unanimously to pass a motion that will immediately ban therapeutic-use exemptions (TUE) for testosterone-replacement therapy (TRT).

Going forward, fighters will no longer be able to apply for TUEs, let alone receive them. Former UFC heavyweight champion Frank Mir, former UFC light heavyweight champion Forrest Griffin, MMA legend Dan Henderson, UFC Tonight co-host Chael Sonnen, and former UFC light heavyweight champion Vitor Belfort all have applied and received exemptions for this therapy in the past. Recently, Belfort made headlines around the MMA world with his use of the therapy, which came under fire because of a failed drug test in 2006, after which the NSAC fined and suspended Belfort.

UFC President Dana White issued a statement regarding the decision, thus reaffirming the company’s firm stance on the issue:

 “The Ultimate Fighting Championship fully supports the decision made today by the Nevada State Athletic Commission regarding the immediate termination of therapeutic-use exemptions (TUE) for testosterone-replacement therapy (TRT). We believe our athletes should compete based on their natural abilities and on an even playing field. We also intend to honor this ruling in international markets where, due to a lack of governing bodies, the UFC oversees regulatory efforts for our live events. We encourage all athletic commissions to adopt this ruling.”

Even with the UFC decision to honor the decision, it appears that Henderson will receive an exemption for his UFC Fight Night 38 headliner with Mauricio “Shogun” Rua on March 23.

It remains unknown, however, what the ban means in regards to Belfort’s bid for the UFC middleweight championship. The Brazilian is expected to face current champion Chris Weidman at UFC 173 in Las Vegas this May. As of now, the fight is expected to go on as planned.