In West Germany and the United States, the film was released as Andy Warhol's Frankenstein and was presented in the Space-Vision 3D process in premiere engagements.

Frankenstein is dissatisfied with the inadequate reproductive urges of his current male creation and seeks a head donor with a greater libido; he also repeatedly exhibits an intense interest in the creature's "nasum" (nose) has a correctly Serbian shape.

[4] As it turns out, a suitably randy farmhand, Nicholas, leaving a local brothel along with his sexually repressed friend, brought there in an unsuccessful attempt to dissuade him from entering a monastery, are spotted and waylaid by the doctor and his henchman, Otto; mistakenly assuming that the prospective monk is also suitable for stud duty, they take his head for use on the male creature.

Not knowing these behind-the-scenes details, Nicholas survives and is summoned by Katrin to the castle, where they form an agreement that he will gratify her unsatisfied carnal appetites.

Nevertheless, Katrin is rewarded for betraying Nicholas by being granted use of the creature for erotic purposes but is killed during a bout of overly vigorous copulation.

When he attempts to have the male creature eliminate Nicholas, however, the remnants of his friend's personality rebel and the doctor is killed in a gruesome fashion.

[1] Upon its release, Nora Sayre of The New York Times wrote, "In a muddy way, the movie attempts to instruct us about the universal insensitivity, living-deadness and the inability to be turned on by anything short of the grotesque.

"[10] Craig Butler of AllMovie called the film "a ramshackle affair, with performances that are ludicrously over-the-top and direction that is even more so, and a script that is filled with horrible dialogue.

Of course, many will appreciate it just for these qualities, either to laugh at how truly outrageous it all is or to marvel at the manner in which director/writer Paul Morrissey is skewering the very countercultural sex revolutionaries that were among his biggest fans, creating what is at heart a very conservative critique of hippie culture.

"[11] Ian Jane of DVD Talk said of the film, "Flesh for Frankenstein is a morbid and grotesque comedy that won't be to everyone's taste but that does deliver some interesting humor and horror in that oddball way that Morrissey has.

"[12] Bruce G. Hallenbeck commented in his book, Comedy-Horror Films: A Chronological History, 1914-2008, that Flesh for Frankenstein is perverse and distasteful, but in a way which is deliberately parodical and even a political statement.