Stacking (also known as ECA) is the combination of ephedrine, caffeine and aspirin to increase fat loss and treat obesity. when taken together in the specific ratio, it creates thermogenesis.  Thermogenesis is defined as the increase in calories to create excess body heat. 

Typical Dosage

- 20-25 mg of Ephedrine hydrochloride

- 200 mg of caffeine

- 80 mg of aspirin


The above dosage is taken together twice a day for 3 to 5 days Then no dosage for two days. Many then increase the stack to three times a day for 5 days with no dosage for two days. Under no circumstances should the dosage exceed three times a day. Side effects can be headache, shakiness, nausea, racing heart.

Many find that the five day cycle works fine. But if many also stack for two days dosing and one day no dose. it is best to try and see which is better for you.

The stack is available in a pre-made form at health food or vitamin stores. You can also create your own stack by purchasing primetine (ephedrine), vivrian (caffeine) and aspirin. Many generic brands exist for ephedrine and caffeine. Check the ingredients to ensure proper mg of each.

Keep in mind that stacking aids in the use of diet and exercise. It is not a diet pill or stand alone cure. No form of medication or treatment should be done without a doctor's approval. If you try it, and you don't feel well, STOP!!!