caffeine

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The findings may have broader implications for people who rely on caffeine at night, including shift workers, health care professionals, and military personnel.

From Science Daily • Mar. 31, 2026

Even though both sexes had similar levels of caffeine in their systems, females displayed much higher levels of impulsive behavior.

From Science Daily • Mar. 31, 2026

Kirkland Signature energy drinks mimic Celsius’s look, flavors, and 200 milligrams of caffeine, causing Celsius shares to fall.

From The Wall Street Journal • Mar. 25, 2026

It was a group powered by caffeine, Johnston said, and their coffee came in handy when they needed a liquid prop to do quick demos with the prototypes to test their absorbency.

From The Wall Street Journal • Mar. 20, 2026

For some reason sugar and caffeine always calmed down my hyperactive brain.

From "The Sea of Monsters" by Rick Riordan