Sophocles, the author of the original Greek tragedy on which this film is based, is given no on-screen credit.
First part of Pier Paolo Pasolini's "Mythical Cycle" also including Théorème (1968), Porcherie (1969) and Médée (1969).
Franco Citti was 5 years younger than Silvana Mangano and 11 years older than Luciano Bartoli, his parents in the movie.