Italian censorship visa # 50824 delivered on 17-2-1968.
Hammer, Bond and Carry On actress Madeleine Smith's first professional acting job was in this film according to her in a 2016 interview.
Trip hop crooner artist Jay-Jay Johanson nicked Ennio Morricone's psychedelic rock song "Dies Irae Psichedelico" off this film for his own song Moonshine.