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.

Studies show that doses as low as 40mg-60mg may improve mood and alertness in middle-aged adults who normally consume little or no caffeine.

From Science Daily • May 13, 2026

The amount of caffeine can vary widely depending on how coffee is prepared.

From Science Daily • May 13, 2026

Even relatively small amounts of caffeine can have noticeable effects.

From Science Daily • May 13, 2026

Freshly brewed coffee made from whole beans may contain very different caffeine levels compared to instant coffee, and preparation methods can also affect cholesterol levels.

From Science Daily • May 13, 2026

It’s 5:48 in the morning, I’m thinking of making an outfit for my clock radio, and I’m so full of caffeine that my scalp itches.

From "Me Talk Pretty One Day" by David Sedaris