Caffeine has been used as a medicinal and recreational drug since before recorded history.
Caffeine has many effects in the body. The three most commonly documented effects are
- adenosine receptor antagonism - causes high blood pressure, tremor, agitation, constriction of blood vessels, speeding of heart pacemaker cells
- phosphodiesterase inhibition - causes activation of the central nervous system (CNS) and production of adrenaline and dopamine
- enhanced intracellular calcium levels - causes increased intracellular calcium levels
- increased intestinal secretions - causes diahorrea and abdominal cramps
page revision: 1, last edited: 07 Aug 2012 09:29