|
Caffeine: Caffeine is a mentholated xanthine.
Caffeine is a very effective central nervous system
stimulant, overcoming fatigue and sleepiness as well as increasing alertness.
Prolonged use can lead to chronic insomnia and overdose will cause insomnia,
agitation and tremours. Caffeine also increases
the heart rate and raises metabolism as well as raising blood pressure. Caffeine
is sometimes effective against migraines.
Caffeine is habit forming and in addicts withdrawal can cause severe headaches. |