"Just one large (20 ounce) cup of Major Dickason's Blend Dark Roast purchased from Peet's retail locations contained a whopping 468 milligrams of caffeine. That is 15% more than the daily recommended maximum by itself. Peet's wasn't the only offender in this case, a grande Starbucks Pike Place coffee also narrowly surpassed 400 milligrams by itself, but Peet's dark roast had 50% more caffeine than other fast food coffee chains like Dunkin' and McDonald's."
"Regularly consuming too much can lead to side effects including high blood pressure, insomnia, anxiety, and nausea. That's why the maximum amount of caffeine you should consume each day is less than 400 milligrams, which is usually about two to three cups of brewed coffee, depending on the brand."
"Caffeine levels vary not just from brand to brand, but even between takeout versions and store-bought coffee beans and grounds. That makes it really hard to track your caffeine intake. Peet's and Starbucks store-bought coffee actually have much more reasonable caffeine levels than what you would get from a shop, even when it was the same roast."
Consumer Reports tested caffeine levels across major coffee brands and found significant variations in caffeine content. A large Peet's Major Dickason's Blend Dark Roast contains 468 milligrams of caffeine, 15% above the daily recommended maximum of 400 milligrams. A grande Starbucks Pike Place coffee also exceeds 400 milligrams. Peet's dark roast contains 50% more caffeine than Dunkin' and McDonald's offerings. Caffeine levels vary considerably between brands and between takeout versions and store-bought grounds of the same roast, making it difficult for consumers to track their daily caffeine intake and avoid side effects like high blood pressure, insomnia, anxiety, and nausea.
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