Here's What The Maximum Amount Of Caffeine You Should Be Drinking In A Day Looks Like

Samantha Lee/Business Insider

And you thought Red Bull was bad.

It turns out that while a can of the energy drink has 80 milligrams of caffeine (just one-fifth the maximum amount you should have each day, according to the Mayo Clinic), one small cup of Starbucks drip coffee has more than three times that amount.

Regardless of how you get your caffeine, it's important to keep in mind that it's a stimulant withsome positive and negative effects.

And the amount of caffeine that's in various drinks — or even the same drink from a different chain — can vary dramatically. Here's how much caffeine is in everything from a can of Coke to a plain coffee from McDonald's:

One and a half cups of Starbucks coffee.

One and a half cups of Starbucks coffee.
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According to the Mayo Clinic, most healthy adults can safely consume up to 400 mg of caffeineeach day. But while most 12-ounce cups of coffee contain 90 to 120 mg of caffeine, one 12-ounce "tall" or small cup of Starbucks is far stronger, with about 260 mg of caffeine per cup.

About two bottles of 5-Hour Energy.

About two bottles of 5-Hour Energy.
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These tiny bottles, or "shots," contain nearly the same amount of caffeine as a cup of Starbucks, which is closer to four cups of regular coffee. Each 2-ounce shot has about 215 mg of caffeine.

About four McDonald's coffees.

About four McDonald's coffees.
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Unlike Starbucks coffee, McDonald's drip contains roughly the same amount of caffeine as a "standard" cup of joe. Each 12-ounce cup has about 109 mg of caffeine.

Five cans of Red Bull.

Five cans of Red Bull.
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While there's lots of info out there about how bad energy drinks are for you, a single 8-ounce can of Red Bull contains 80 mg of caffeine, less than a standard cup of coffee and roughly one-third of the caffeine in a 12-ounce Starbucks coffee. It also contains other ingredients, however, like taurine, whose long-term effects have yet to be studied extensively.

About six cups of brewed black tea.

About six cups of brewed black tea.
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You might be surprised to learn that not all tea is designed to lull you into a relaxed, sleepy state. An average cup of brewed black tea contains about 67 mg of caffeine, still less than a can of Red Bull or a cup of McDonald's coffee but far from minimal.

About 12 cans of Coke.

About 12 cans of Coke.
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One 12-ounce can of Coke has 34 grams of caffeine. While that might seem pretty low, if you're like us and drink a few of these in a day, it can add up! Still, a single can is the rough equivalent of about a third of a cup of regular coffee or about a seventh of a cup of Starbucks.

About five and a half lattes.

About five and a half lattes.
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A standard shot of espresso contains about 71 mg of caffeine, meaning that a small latte(espresso plus steamed milk) or cappuccino (espresso plus milk and foam) — so long as its made with a single shot — contains the same amount.

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