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.

Coffee and tea contain other compounds beyond caffeine that may benefit the brain as well.

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

Moderate caffeine consumption does not appear to raise long-term blood pressure risk and may even lower the risk of cardiovascular disease, which shares many risk factors with dementia.

From Science Daily • May 13, 2026

I was caffeine jittery and surly and perfectly capable of wasting his money.

From "Kindred" by Octavia Butler