What’s in an ECA stack?
EPHEDRINE, CAFFEINE & ASPRIN
Ephedrine is derived from the Ephedra plant. It’s been used in traditional Chinese medicine for centuries and is also referred to as “ma huang.”
This extract stimulates the central nervous system (CNS) through release of a compound called norepinephrine. Norepinephrine is used to get the body ready for action and activity. This makes it an important part of the fight-or-flight response during times of high stress.
Ephedra also raises heart rate and can also cause constriction of blood vessels, leading to high blood pressure.
Caffeine is also a stimulant of both the CNS and the cardiovascular system. It’s commonly found in coffee, tea, and soft drinks. Caffeine consumption can increase feelings of alertness, effectively reducing fatigue.
But when taken in large doses, caffeine can also cause:
-increased heart rate
-elevated blood pressure
Aspirin is a pain reliever. When taken as part of an ECA stack, aspirin prevents norepinephrine levels from -decreasing. In other words, its helps maintain the stimulation effects that the caffeine and ephedrine help provide.
Long-term use of aspirin, even in small doses, has been associated with an increased risk of bleeding in the gastrointestinal tract.