How much caffeine is in an average cup of coffee, and how many cups can one drink before feeling its effects? - Quora
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![In a placebo-controlled double-blind study caffeine improved attention best at 200 mg. The higher doses didn't lead to any additional improvements. More Caffein… In a placebo-controlled double-blind study caffeine improved attention best at 200 mg. The higher doses didn't lead to any additional improvements. More Caffein…](https://i.pinimg.com/1200x/38/6d/34/386d34a72d44cf54a51856433630ef09.jpg)
In a placebo-controlled double-blind study caffeine improved attention best at 200 mg. The higher doses didn't lead to any additional improvements. More Caffein…
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![SOLVED: A cup of coffee contains 87.2 milligrams of caffeine. How many grams is this? 8.72 mg STARTING AMOUNT 8.72 mg x 8.72 mg = 0.001 g X = 0.0872 g 8.72 SOLVED: A cup of coffee contains 87.2 milligrams of caffeine. How many grams is this? 8.72 mg STARTING AMOUNT 8.72 mg x 8.72 mg = 0.001 g X = 0.0872 g 8.72](https://cdn.numerade.com/ask_images/584d85da0f5a4a4e95deb1ab20ca7787.jpg)