Osmosis video - Psychomotor stimulants

Psychomotor stimulants are medications that stimulate the central nervous system to increase alertness, attention, and energy levels. Some psychomotor stimulants, like modafinil, methylphenidate, and cocaine work by increasing the amount of dopamine, norepinephrine, and serotonin in the synapse by preventing their reuptake. Others, like the methylxanthines, block the action of adenosine, which normally decreases neuronal activity and causes drowsiness. Common side effects include agitation; insomnia, tachycardia, hypertension, tics, and anorexia.