What are thé symptoms of to much Caffeine?

Jittery? Caffeine is first of all a CNS (central nervous system) stimulant and its effect can vary from simply keeping you awake to palpitations , anxiety. jittery feelings...... Second of all its a Diuretic (make you urinate) Hope this helps! Proves MODERATION is BEST in ALL THINGS Dr Z.
Caffeine. The caffeine in regular coffee is a stimulant, and too much in a short amount of time can cause palpitations, anxiety, jitteriness, sleeplessness and irritability.