Caffeine is an alkaloid of the methylxanthine family known for its psychoactive properties. It acts particularly on the central nervous system where it has a stimulating effect. Caffeine reduces the feeling of fatigue, promotes wakefulness and increases alertness, stimulates concentration and memory, and also facilitates ideation (formation and linking of ideas). It is also known to have anti-migraine properties.
Caffeine is also active in the cardiovascular system, increasing the rhythm and contraction of the heart and promoting oxygenation. In addition, this molecule has a vasodilator activity and a mild diuretic effect. Caffeine also aids digestion.
However, in order to benefit from caffeine and not be subject to side effects, it is recommended not to exceed doses of 300mg of caffeine per day.