The 'White Album' Classic The Beatles Recorded 'Completely Out of Their Heads'
It wasn’t any state secret that The Beatles used drugs. Looking back at Rubber Soul, George Harrison spoke of the effect the band’s use of marijuana consumption had on that record. And Paul McCartney said he wrote Revolver’s “Got to Get You Into My Life” about weed.
Of course, John Lennon’s 1968 arrest for possession of hash removed any lingering doubts. But most of that was going on outside of the studio. Apart from the occasional forays — as John and Paul had during the Abbey Road sessions — most Beatles recordings feature the band sober enough to walk straight.
George Martin, the band’s father-figure producer (and head of Parlophone Records), certainly ran a clean studio during his early years working with the band. However, by 1968, the rules had changed a bit.
Source: cheatsheet.com