Cindy Crawford and Rande Gerber's son, Presley Gerber, is opening up about his mental health medication routine in an act of transparency. "Here's some clarity for ya - the truth will set you free (hopefully) haha," Presley, 26, captioned an Instagram video on Monday, December 1, shedding light on his personal struggles. "I feel like honesty is the best policy," Presley began, before breaking down what medications he's currently taking, including one milligram of Buprenorphine two times a day. (Buprenorphine is meant to treat opioid use disorder and pain.