Since most healthy adults appear capable of handling 400 milligrams of caffeine per day, which is about four 6-ounce cups of brewed coffee, those who would want to try Black Insomnia should get just one 6-ounce cup of the coffee as this amount would get close to the recommended maximum caffeine intake per day. But good news for people who associate the strongest coffee with the best coffee: The most potent stuff in the whole world no longer requires a trip overseas.
The South African newcomer boasts it has achieved "dangerously high levels of caffeine" by harvesting only Robusta beans, rather than the tamer Arabica variety.
The company was launched in Cape Town, South Africa, in 2016 by Sean Kristafor, who had a vision of "rebooting" the coffee industry. Other brands also make similar claim so the makers of Black Insomnia sent samples to a Swiss-based laboratory to scientifically support their claim.More news: Merkel ally sees 'tail wind' from German state election
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If your morning cup of Pike Place Roast isn't getting the job done, Black Insomnia coffee could be your key to an energized day. "Effects can range from mild to severe, for example, jitteriness, nervousness, restlessness and trouble sleeping".
"Caffeine overdose is risky and can kill you", according to the FDA.
"We are very aware of the limits and there are clear warnings on the labels", said Kristafor of Black Insomnia.
Caffeine Informer's editor Ted Kallmyer places Black Insomnia on its list of the most unsafe caffeinated products.