He used it when it was legal in the early sixties. He visited Dr Mortimer Hartman at the Psychiatric Institute of Beverly Hills weekly for therapy because he was having a difficult time adjusting to fame. Cary Grant said that LSD cured him and helped him find his goal. Now, there is a movie out about this.
Guardian: Cary Grant: how 100 acid trips in Tinseltown 'changed my life'
