What are caffeines effects?
Since it is a stimulant, caffeine increases alertness and quickness of response, and often briefly improves mood. It is a mild diuretic. In large doses, it can produce jitters, anxiety, and insomnia. As with any stimulant, the period of enhanced alertness and heightened mood is generally followed by a period of depressed mood and ability. Caffeine is also an addictive drug if taken regularly. Caffeine addiction is probably the most common drug addiction in the world, with nicotine addiction a close second.
