Burger King claims it’s new “Nightmare King” burger will keep you up at night.

The fast food chain says the Halloween themed sandwich is “clinically proven to induce nightmares."

The burger features a beef and chicken patty, American cheese, bacon, mayonnaise and onions on a salivating green bun.

The clinically proven study was conducted with the help of Paramount Trials and Florida Sleep & Neuro Diagnostic Services, according to a news release.

Burger King conducted “a scientific study over 10 nights with 100 participants who ate the Nightmare King before they went to bed.”

“According to previous studies, 4 percent of the population experiences nightmares in any given night,” said Dr. Jose Gabriel Medina, the study’s lead doctor, in a statement. “But, after eating the Nightmare King, the data obtained from the study indicated that the incidence of nightmares increased by 3.5 times.”

WKYC’s Randy White joined me to put the burger to test. While we waited for the results, we went to a sleep expert to find out if this is just a marketing ploy or the real thing?

"It's really just something fun,” said Dr. Carolyn Ievers Landis, a clinical psychologist at University Hospitals. “We don’t have any data to prove that a certain type of food would cause nightmares."

She says their “clinically proven study” was flawed. She said because the burger giant had no control group for comparison.

"They might have had vivid dreams because they were expecting to have a bad dream," she said. “Things that make bad dreams our exposure to aggressive or violent things. that's what make bad dreams not eating a hamburger."

For Randy and yours truly--as you might’ve guessed by now--no we did not have a nightmare--though their stomachs may think otherwise.

So, we can verify, Burger King's “Nightmare King” burger does not give you nightmares.