One of the most common ingredients in sports supplements is caffeine. In moderate amounts, caffeine can boost performance in some sports, depending on the individual athlete. But too much caffeine can ...

(Reuters) - The amount of caffeine in diet supplements varies widely, and product labels are often inaccurate or have no caffeine information at all, according to a U.S. study. The caffeine doses ...

With the fitness market expanding, more people are getting in on gym life and investing in things to kick their sessions up a notch. Enter pre-workout, a supplement mix that promises to boost energy, ...

About half of adults in the United States report consuming dietary supplements regularly. What they may not know is that some of these supplements contain caffeine, even if it's not listed on the ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Ever feel like you’ve had one cup too many? Of coffee, that is. Or, honestly, the first cup might already ...

Just days before his high school graduation, 18-year-old Logan Stiner was found dead in his home, CBS News Correspondent Don Dahler reports. The coroner ruled the cause of death to be a lethal dosage ...

Nothing fits with cycling so much as the post-ride java stop, and that’s probably half the reason many of us get out on group rides to begin with. Caffeine is probably the most common ergogenic aid in ...

Raspberry ketones, sold as weight loss tablets, are chemicals found in red raspberries responsible for that distinct raspberry flavor and smell. You can also make raspberry ketones in a lab. A study ...

Cold and flu medications provide relief when you’re sick, but mixing them with caffeine can increase potential side effects.