The safety of caffeine pills often depends on how much you take. High amounts of caffeine in a caffeine pill can cause symptoms like dizziness, irritability, nausea, and rapid or irregular heartbeat.

A novel placebo-controlled study has found daily caffeine consumption can significantly reduce the volume of gray matter in ...

ST KILDA star Lenny Hayes says the use of caffeine tablets and sleeping pills is a non-issue in the AFL. Hayes said he used both on rare occasions, that their use was widespread in the AFL, and he ...