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.

Afterward, caffeine was provided in drinking water for unrestricted consumption over a seven-day period.

From Science Daily • May 30, 2026

This targeted action meant that animals in the control group that had not experienced sleep deprivation did not show signs of excessive neural stimulation despite receiving caffeine.

From Science Daily • May 30, 2026

At the other end, robusta beans, known for their high levels of caffeine, are mass harvested by machines.

From BBC • May 28, 2026

The drink's bright emerald colour has attracted the TikTok generation, and the milder caffeine hit from its green tea powder is suited to health-conscious drinkers who want good sleep.

From BBC • May 28, 2026

Lacey says, “Is it that weird feeling you get from so much caffeine that, like, your heart isn’t beating so much as your whole body is beating?”

From "Paper Towns" by John Green