American horror movie The Outwater reportedly making audiences vomit

A new American horror movie is reportedly so terrifying, audiences are leaving the cinema to vomit.

The Outwaters is supposedly making people vomit.

A new horror film has terrified people so much that viewers are claiming that they have been left with nightmares and had to walk out of the theatre to vomit.

One theatregoer even claimed his Apple watch alerted him about his heart rate — twice.

The Outwaters was released on February 9 and has since received mixed reviews from both critics and distraught fans, reported New York Post.

The indie found-footage film follows a group of friends in their 30s who adventure to the Mojave Desert to shoot a music video — until all hell breaks loose.

The film takes a “creepy” turn to become “a mind-bending trip through terror” as the campers begin “to experience unexplained sounds, vibrations and unnatural animal behaviour,” the synopsis explains.

The movie is written and directed by Robbie Banfitch, who also stars in the Blair Witch-style film.

“I’m still processing #TheOutwaters. I am not sure if it worked for me,” viewer Leandro Calado tweeted. “The [sound[ made me so uncomfortably dizzy that I had to leave the theatre to vomit. This [has] never happened to me before. It’s more disturbing than scary if that makes any sense.”

Eeeew.

“#TheOutwaters is one of the most deranged nightmares I’ve chosen to sit through in a while. I quite literally was trembling in multiple parts. The sound is absolutely HELLISH,” an audience member named Joseph tweeted.

He also claimed that the movie set off his Apple Watch’s “high heart rate” alert twice during the film and led to him having nightmares.

“Just finished #TheOutwaters and it was very effective. Definitely wish I’d seen it in the theatre,” Brandy Sims admitted on social media. “It was disorienting, disturbing, extremely anxiety-inducing, and an absolute journey into hell. Two thumbs up!”

“HOLY HELL that was a ride. I’m still trying to process what I saw and how I feel about it. I have so many questions!” D Rock tweeted.

“The last half of #TheOutwaters felt like a panic attack. I think I’m sleeping with the lights on. Truly terrifying movie,” Bethany tweeted.

The horror film has earned critics rating of 71 per cent critics rating and an audience rating of 60 per cent for being “frustratingly withholding” while remaining “ambitious — and overall effective,” according to Rotten Tomatoes.

The Outwaters does not have an Australian distributor.

The Outwaters isn’t the first movie to prove that making your audience physically ill may not be as bad as it sounds.

Audience members were sickened by horrific scenes in Crimes of the Future and reportedly walked out of the premiere at the Cannes Film Festival in May. The majority of the exits reportedly occurred within the first five minutes of the film but a specifically grotesque scene of actor Lea Seydoux licking an open wound sent others out the door further along in the film.

Despite being too much for some, the movie directed by David Cronenberg received a seven-minute standing ovation from the remaining audience members at the end.

In October, another film similarly scared people sick. Viewers said Damien Leone’s slasher flick Terrifier 2 was so graphic that they vomited and passed out in their seats.

This article originally appeared on New York Post and was republished with permission