(L/R) US Secretary of Health and Human Services Robert F. Kennedy Jr., and US media personality Joe Rogan look on as US President Donald Trump shakes hands with W. Bryan Hubbard, CEO of Americans for Ibogaine, during an executive order signing ceremony in the Oval Office of the White House in Washington, DC on April 18, 2026. The executive order aims to further US federal medical research and clinical trials for certain psychedelic drugs.certain psychedelic drugs. (Photo by Jim WATSON / AFP via Getty Images)

WASHINGTON, DC - APRIL 18: U.S. President Donald Trump speaks in the Oval Office before signing an Executive Order April 18, 2026 in Washington, DC. The executive order directs the Food and Drug Administration to issue new guidance on the use of psychedelic drugs intended for clinical trials for U.S. veterans suffering from Post Traumatic Stress Disorder. (Photo by Tasos Katopodis/Getty Images)

WASHINGTON, DC - APRIL 18: U.S. President Donald Trump speaks in the Oval Office before signing an Executive Order April 18, 2026 in Washington, DC. The executive order directs the Food and Drug Administration to issue new guidance on the use of psychedelic drugs intended for clinical trials for U.S. veterans suffering from Post Traumatic Stress Disorder. (Photo by Tasos Katopodis/Getty Images)

US Secretary of Health and Human Services Robert F. Kennedy Jr. (2L) speaks before US President Donald Trump an executive order in the Oval Office of the White House in Washington, DC on April 18, 2026. Also pictured are FDA Commissioner Marty Makary (L) and US media personality Joe Rogan (2R). The executive order aims to further US federal medical research and clinical trials for certain psychedelic drugs. (Photo by Jim WATSON / AFP via Getty Images)

FDA Commissioner Marty Makary (2L) speaks before US President Donald Trump signs an executive order in the Oval Office of the White House in Washington, DC on April 18, 2026. Also pictured are Health and Human Services Secretary Robert F. Kennedy Jr. (2R) and US media personality Joe Rogan (R). The executive order aims to further US federal medical research and clinical trials for certain psychedelic drugs. (Photo by Jim WATSON / AFP via Getty Images)

WASHINGTON, DC - APRIL 18: U.S. President Donald Trump speaks in the Oval Office before signing an Executive Order April 18, 2026 in Washington, DC. The executive order directs the Food and Drug Administration to issue new guidance on the use of psychedelic drugs intended for clinical trials for U.S. veterans suffering from Post Traumatic Stress Disorder. (Photo by Tasos Katopodis/Getty Images)

US President Donald Trump speaks before signing an executive order in the Oval Office of the White House in Washington, DC on April 18, 2026. The executive order aims to further US federal medical research and clinical trials for certain psychedelic drugs. (Photo by Jim WATSON / AFP via Getty Images)

US President Donald Trump speaks before signing an executive order in the Oval Office of the White House in Washington, DC on April 18, 2026. Pictured behind President Trump are Secretary of Health and Human Services Robert F. Kennedy Jr. (L) and US media personality Joe Rogan. The executive order aims to further US federal medical research and clinical trials into certain psychedelic drugs. (Photo by Jim WATSON / AFP via Getty Images)