Science related (Medical) Shark Tank’s Kevin O’Leary Thinks Psychedelics Could Exceed Marijuana Investment Potential by Sophia Vida May 12, 2021 According to Kevin O'Leary, one of the hosts of Shark Tank, psychedelic drugs, such as medicinal mushrooms, could "far exceed" cannabis investment potential. O'Leary says that the size and scale of the market for treatment of m...