Patrick Henley (born May 4, 1959), known professionally as Henriette Valium, was a comic book artist and painter from Montreal, Quebec.

His comics are known for their hallucinogenic style and crazy stories. Henriette Valium started  utilizing this approach in the early 80’s, and he never abandoned it.

With a career spanning over three decades, Valium’s creations are widely dispersed through numerous anthologies, fanzines, self-published comics, and various mixed-media collaborations, which makes it difficult to establish a detailed chronology of his work.

Henriettevalium.com