The "world's strongest coffee" is so strong, it will drive you over the daily caffeine limit and give you heart palpitations. They recommendmost healthy adults can't consume more than 400 mg a day. Black Insomnia Coffee is officially the strongest coffee in the world - strong enough to be unsafe, according to CNN.
The coffee hails from South Africa, and calls Cape Town the coffee capital of the world on its website.
It has 58.5 milligrams of caffeine per ounce, nearly three times as much as Starbucks' dark roast. The race to produce the world's strongest coffee has reached a coffeever pitch, with Black Insomnia at the top. "The most serious effect would be an irregular heartbeat".
At least that's the claim of the not-so-subtly-named Black Insomnia, which contends it has scientific proof its brew packs multiple times the punch of a normal cup of Joe. Caiden Tuller, who works at customer service at the New York-based company, said, "We're the leader in the strong coffee category and are not letting up anytime soon". This week, the company made its global debut by expanding distribution of its heavily caffeinated product through Amazon. But for items like coffee beans, the FDA counts caffeine, not as a nutrient, but rather a natural chemical.
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