American International Pictures released this film to many drive-in theaters as the bottom half of a double feature with I Was a Teenage Frankenstein (1957) with the tagline: "Warning! Can You Take It? Fiendish! Frenzied! Frightening! It Will Haunt You For Days Afterwards[sic]!"
This is the first English-language vampire film to show a vampire with visible fangs.
This film's theatrical release poster motif is based on a Chester Collum illustration from "Adam" magazine Vol. 1 No.10 (1957). It reappears further altered on the cover of "Tales of Voodoo" (May 1974).
This is the third in American International Pictures' teenage monster movies after the big success of both Les griffes du loup-garou (1957) and I Was a Teenage Frankenstein (1957). This one shamelessly borrows from the classic monster Dracula (in name only) and features a female monster, with special effects and production values as bargain basement as could be had for a 1950s exploitation series that was already starting to run out of gas. As a last bit of homage, AIP followed this film in 1958 with How to Make a Monster (1958), which allowed them to conveniently use bits and pieces from the first two of the previous three films. Many more teen-oriented films were made by AIP, but not capitalizing on the Universal Classic Monsters pantheon.
Despite its title and the reference in it to the Carpathian Mountains in Romania, this film has absolutely nothing to do with either Dracula or his blood. A better title for it would have been "I Was A Teenage Vampire," since that was what it was really all about.