What Is An ECA Stack?

ECA stands for 'E' for ephedra, 'C' for caffeine, and 'A' for aspirin which are the three ingredients for the so called ECA Stack. Combining these three ingredients, is said to increase your body’s ability to burn fat at a greater rate than with just using ephedra alone. Moreover, the ECA Stack is said to have anti-catabolic properties, which means it will minimize muscle loss while dieting. 

Ephedra: increases the bodies thermogenesis to burn fat 

Caffeine: the second key ingredient to the ECA Stack. Caffeine is generally derived from Kola Nut and green tea extract. Caffeine works by increasing adreneline levels along with fatty acid concentrations which improves mental alertness. 

Aspirin: the final ingredient in the ECA Stack is a popular name for acetysalicylic acid. Aspirin will increase the body's heat tolerance, thereby allowing the effects of the ephedra and caffeine to persist for a much longer time. 

Many popular dietary supplements which contain ephedra, also contain caffeine and aspirin. While the ratio between the three ingredients vary, a generally accepted ratio for an ECA Stack is 25mg of ephedrine, 250mg of caffeine and 80-300mg of aspirin. Many people buy the three stack components separately and adjust the ratio of ingredients to their liking or preferences.