The drugs are normally prescribed to treat attention deficit hyperactivity disorder (ADHD), but healthy students use them to get a leg up in school, by improving focus, concentration and memory.
Adrenaline, or epinephrine, is a hormone that dilates an individual's air passages and increases his heart rate when he is faced with a stressful situation. The hormone is secreted from the adrenal glands to help ensure survival under dangerous situations.
Adrenaline is a hormoneHormone - a chemical made by a gland that travels in the bloodstream and tells organs what to do. that affects such bodily functions as heart rate, blood pressure, breathing, digestion, sweating, urination, and sexual arousal.