Leading Meeting Professionals

Professional Convention Management Association

April 01 2016

How Much Coffee You Should Actually Drink In One Day

David McMillin

Whether you’re dealing with the on-site logistics of an annual conference or you’re shuffling between meetings in your office, your caffeine fix may be one of the key ingredients in determining the success of your day. You don’t want to overdo it, though; the Mayo Clinic recommends a maximum of 400 milligrams of caffeine for adults. After the 400-milligram threshold, you’ll see a number of not-so-positive effects including insomnia, irritability, stomach issues and muscle tremors.

So how much is 400 milligrams? Well, all caffeinated beverages are not created equal. From Red Bull to soda to a standard cup of coffee, the amount of caffeine in your body depends on what you’re drinking. A recent article from Business Insider highlights the point at which some of the most common caffeine drinks become too much. If you’re like me, you’ll want to pay attention to these levels.


They’re in hotel lobbies. They’re on every corner. For many people, Starbucks is synonymous with the morning routine. However, you may not want to make it an afternoon habit, too. Why? One tall cup of Starbucks drip coffee contains 260 milligrams of caffeine. That’s quite a bit more than the Starbucks latte. If you’re looking to keep caffeine low, you may want to opt for the Starbucks latte, which contains just 75 milligrams of caffeine.

MORE: Do Meetings Run On Coffee?

5-Hour Energy

“Have you tried 5-Hour Energy…lately?” This company’s advertising campaign is turning many people into small-bottle believers, and it turns out these two-ounce shots are relatively appropriate for the workday. Each contains approximately 215 milligrams. So, you can start with one at 8:30 AM, take another at 1:30 PM and be productive and awake through 6:30 PM.

Red Bull

While Red Bull may give you wings, the caffeine in this drink isn’t going to cause serious issues. An eight-ounce can only contains 80 milligrams of caffeine. Translation: five Red Bulls equals one and one-half tall cups of Starbucks.


If a can of Coke is your afternoon-pick-me-up, you’re keeping your caffeine levels in check. In fact, one can only contains 34 grams of caffeine. This means that you could drink up to 12 cans in one day and still maintain an acceptable amount of caffeine. Of course, your dentist and your doctor would not be happy.

Rather than relying on caffeine, you’ll be better off aiming to get more rest. Check out “These Are The Sleeping Habits Of Some Of The Most Successful Leaders In The World.

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