Big cans of Arizona Green Tea are a staple of convenience stores all over. How much of an energy boost will you get per can ...

Even for those at the lower end of the half-life scale, caffeine will last in your body for many hours after ingestion. This ...

Caffeine is safe in moderate amounts, but excessive intake, especially from supplements or in children, can pose serious ...

But tea isn’t just herbs and water. It contains caffeine, a stimulant that affects kids differently than adults. While adults can handle small doses, caffeine in tea can harm a child’s ...

There’s evidence the effects of caffeine in a cup of tea are enhanced by an amino acid it contains, called L-theanine, if it is drunk regularly. The research finds “L-theanine may interact ...

A new large-scale study published in the June 2007 issue ... examined the relationship between coffee, tea, caffeine intake, and uric acid levels and found that coffee consumption is associated ...

It's grown and prepared in a way that makes it different from regular green tea, with a higher caffeine content. "In the few weeks leading up to harvest, tea plants are covered to avoid direct ...