Energy Drinks and Caffeine Intake

Caffeine is probably the most common “drug” in the modern world.

It’s found naturally in coffee, tea, and cacao plants—and synthetically in sodas, supplements, and energy drinks.

And while moderate caffeine intake is generally considered safe for most adults (up to 400 mg per day, according to the FDA), the rise of energy drinks in the past decade or so has potential for concern.

Energy drinks are often marketed for performance, alertness, or focus, but they typically combine high doses of caffeine with sugar, taurine, B vitamins, and herbal extracts like guarana or ginseng.

So the problem isn’t necessarily caffeine itself—it’s how much, how fast, and what it’s paired with.

Research shows that many energy drinks contain anywhere from 100 mg to over 300 mg of caffeine per can, sometimes consumed rapidly.

In contrast to coffee, which is often consumed slowly over an hour or more, energy drinks are often downed rather quickly, increasing the risk of acute caffeine overdose (yes, that’s a thing) symptoms like insomnia, jitteriness, elevated heart rate, and anxiety.

There’s also evidence linking excessive energy drink consumption to heart rhythm disturbances, high blood pressure, and, in rare cases, cardiac arrest—especially in people with underlying heart conditions.

Youth and adolescents are at greater risk.

The American Academy of Pediatrics recommends that children and teens avoid energy drinks altogether, citing concerns over, among other things, potential negative effects on the cardiovascular system.

So while caffeine itself can be consumed safely, energy drinks could pose added risks due to their more concentrated doses, rapid consumption, and additional stimulants.

If you rely on them for energy, it might be worth considering some more sustainable habits—like getting enough sleep, staying hydrated, and maintaining a consistent diet and exercise routine.

Your heart (and nervous system) will thank you.