What are the adverse effects of caffeine?

* blurred vision * dizziness * dry mouth * cold sweats * flushing of skin * pallor of skin * increased heart rate * trouble breathing * fruit-smelling breath * diarrhea * drowsiness * change in appetite * thirst * anxiety * mental confusion * irritability * insomnia * hyperglycemia (high blood sugar) * muscular tremors * nausea * stomachache * increased urination * ketones in urine (an acidic compound)