A cafe in Adelaide, Australia, offers ultra-high caffeine coffee comparable to death wish.

A coffee shop in Adelaide, Australia, has launched super coffee with 5 grams of caffeine per cup, 80 times more caffeine than regular coffee and half the lethal dose. When selling this "kill you" (Asskicker) coffee, the store issued a health warning that people with a bad heart or blood pressure problems should not buy it.

A cup of espresso contains 60 milligrams of caffeine and a standard filtered coffee contains 150 milligrams. And "kill you" contains a full 5g of caffeine. Coffee shop owner Steve Benington says this is enough to maintain "continuous working hours" of 12-18 hours. The caffeine content is so high that you can't get bored. You have to drink it slowly within four hours.

Benington said he came up with the idea of "killing you" when an emergency nurse asked him if he could give her a strong drink to get her through the temporary night shift. "she drank that drink for two days and didn't sleep for three days-I lowered my energy a little bit, so I had to kill you," he recalled. The current formula is: 4 cups of espresso, 4 48 hours fresh dripping cold coffee ice cubes (brewed cold drip ice cubes), 120ml fresh dripping cold coffee for 10 days, plus 4 48 hours fresh leaking cold coffee ice cubes. "each ice cube contains twice as much caffeine as espresso," Benington explained.

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This powerful iced coffee, which stayed awake for three days, spread in Adelaide. Many years ago, people went to the store to challenge themselves. "I will talk to these young people to make sure they know what they are doing, and a lot of people think I am persuading them not to drink," the boss told reporters. "this is pure coffee, very high quality, and that's the only problem. It tastes so strong that it doesn't last long enough."

"some people fall in love with it at once, and some even prefer to eat dirt and drink it," Benington said, "killing you." But not everyone thinks it's funny. Tanya Lewis, a well-known nutritionist, called the drink "extremely risky" and warned that caffeine is a drug that needs to be taken seriously, not abused. "some people are hospitalized or even die as a result, and their caffeine intake is less than half that of the drink," Lewis said.

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There are currently no health-based guidelines for daily caffeine intake, according to a 2015 Australian and New Zealand food standards paper. But still, Benington will warn consumers with a bad heart or high blood pressure, which is "killing you" after all.