George Harrison wrote "Savoy Truffle" in September 1968, by which point the Beatles had been working on their self-titled double album (often known as "the White Album") for over three months.
Musicologist Walter Everett suggests that "Savoy Truffle" might have been an attempt to rewrite the Byrds' "less innocent" 1968 track "Artificial Energy", which warns of the dangers of amphetamines [REF].