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The amount of caffeine in one caffeine pill is equivalent to two cups of coffee. Caffeine pills may be beneficial to students who wish to stay awake for studying purposes. Caffeine pills may be beneficial to people who want to have more energy for exercising in order to lose weight. Caffeine can be ingested in pill form. People who take caffeine pills may have a hard time getting to sleep at night.
They tout that they are as safe as coffee, but maybe not. They have a lot more caffeine than an 8-ounce cup of coffee.. That 8-ounce cup of coffee has about 100 milligrams of caffeine, although coffees and teas vary widely in their caffeine content depending on how they are brewed. For example, CR finds that 8 ounces of Starbucks coffee has 165 milligrams of caffeine. CR says safe limits of caffeine are up to 400 milligrams per day for healthy adults, 200 milligrams a day for pregnant women, and up to 45-85 milligrams per day for children, depending on weight.