Vitor Belfort uses testosterone replacement therapy. Vitor is not cleared by ANY U.S. commissions to fight on TRT Vitor is the ONLY fighter on TRT to have previously failed a steroid test. Vitor is only fighting in Brazil because it’s the only commission to clear him Vitor’s performances took a noticeable turn, at the same time his physique took a noticeable turn, at the same time he got on TRT.