Taking caffeine before exercise could improve performance during a broad range of exercise tasks, according to a new review of past research.

Today, the U.S. Food and Drug Administration took an important step to better protect consumers from the dangers of highly concentrated and pure caffeine products. These products present a significant public health threat because of the high risk that they will be erroneously used at excessive, potentially dangerous doses. Highly concentrated and pure caffeine, often sold in bulk packages, have been linked to at least two deaths in otherwise healthy individuals.

The U.S. Food and Drug Administration on Tuesday issued warning letters to five distributors of pure powdered caffeine, as the federal agency stepped up efforts to curtail ingestion of the stimulant in its pure form. The drug regulator had in 2014 issued a consumer advisory warning of the risk to taking pure powdered form of […]