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ECA Stacks are a combination of different drugs, medicines, supplements, or ingredients that are combined together to essentially form one individual drug in the hope of increasing the overall potential benefits of each individual component during weight loss, and even weight training.

There are many methods that people can adopt in order to increase their potential for weight loss. Supplements and weight loss drugs are a very popular method, however, some of the supplements and drugs can carry serious health risks and adverse side effects, in some cases, they can result in death.

ECA stacks fall into the latter category and have now been banned in most countries due to the serious health risks they pose to the public.

What Is An ECA Stack?

An ECA stack is a combination of ephedrine, caffeine, and aspirin. Some variants of an ECA result in just EC as some people cannot tolerate aspirin. During the 1990s and early 2000s, ECA’s were extremely popular and marketed as a weight loss wonder drug for people overweight, and for bodybuilders.

Many dietary supplements were based on ECA’s, however, they were subsequently banned due to reports of heart attacks, strokes, and deaths.

What Does An ECA Stack Contain?

There are three separate components to an ECA stack which are as follows:

(E) Ephedrine can help to promote short term weight loss, stimulate the central nervous system, and open up the airways allowing the user to increase their breathing capacity.

(C) Caffeine also has similar effects as a stimulant on the body and can also increase blood pressure, speed up the digestive process, increases concentration, and reaction times.

(A) Aspirin, also known as acetylsalicylic acid (ASA), is a medication used to treat pain, fever, or inflammation.

How Does Ephedra Work?

The general concept behind the functionality of an ECA stack is it combines all of the individual benefits listed above in the hope of maximizing someone’s potential to burn fat and build muscle, whilst reducing some of the negative effects of exercise and weight training.

By using stimulants such as Ephedrine and Caffeine, the user is stimulating their central nervous system which can have several subsequent effects such as increased heart rate, higher blood pressure, increased metabolic rate, quicker reaction times, expanded airways, and increased levels of energy.

These are all biological changes that will ultimately lead to the user experiencing an increased level of energy being made available to them, which, in turn, will result in more fat being burnt during a workout.

The user will also experience reduced pain levels, reduced inflammation and lower body temperature which are all aspects of training that hinder the user’s progress when trying to build muscle and lose weight.

What Are The Side Effects of ECA Stacks?

Ephedrine alone has been responsible for a wide range of serious health issues, adverse side effects, and even deaths. Caffeine can have some negative side effects but are not deemed to be a serious health concern, the can be said for Aspirin, however, this is a drug usually taken for medicinal purposes only.

The most common side effects of ECA Stacks are: 

  • Nausea
  • Vomiting
  • Anxiety
  • Change in mood
  • Hyperactivity
  • Heart palpitations
  • Deaths
  • Seizures
  • Heart attacks
  • Serious psychological events, such as psychosis or severe depression

If you are pregnant and/or breast-feeding: Do not consume this product if you are pregnant or breast-feeding.

If you’re a child under the age of 18: Do not consume this product if you are under 18.

Can I Purchase ECA Stacks With A prescription?

No. This is now a banned substance on most countries.

Can I Take ECA Stacks With Other Medication? 

This is NOT recommended under any circumstance.

Can I take ECA Stacks with other supplements? 

This is NOT recommended under any circumstance.

Is It Safe To Take ECA Stacks For Weight Loss?

ECA stacks are NOT safe for weight loss and have been linked to a number of deaths. The sale of such supplements has now been banned in many countries and deemed unsafe to use. 

Do ECA Stacks Actually Work For Weight Loss?

Technically, yes. ECA stacks will see the user experiencing all of the benefits listed above, including weight loss, however, ECA Stacks can also lead to a number of serious health issues, and can also result in death.

Have There Been Any Deaths Linked To ECA Stacks?

Yes. there have now been a number of deaths linked directly to people using ECA Stacks.


ECA stacks contain three separate ingredients including Ephedrine, Caffeine, and Aspirin which are designed to provide the user with a number of advantages when it comes to building muscle and losing weight.

Some of the advantages include increased energy levels, increased metabolic rate, faster reaction times, higher energy levels, and the ability to train harder, however, ECA Stacks come with a number of potentially dangerous, even fatal in some cases, adverse side effects.

ECA Stacks can increase your blood pressure to dangerous levels, speed up your heart rate to an uncontrollable level, cause anxiety attacks, heart palpitations, respiratory problems, and even cause long-term damage to organs. Some of these temporary side effects can, and have been linked, to strokes, heart attacks and even death in a number of reported cases.

Whilst Ephedrine has now been banned in most countries due to its potential health hazards, Caffeine is still a widely used supplement used for weight loss which usually comes in the form of a pre workout formula. Aspirin is designed for medicinal use only, and should be treated as such.

ECA Stacks are not a safe method of weight loss and you should avoid combining these components to try and lose weight. Sticking to a natural course of exercise combined with a healthy, well-balanced diet will always be the safest way to lose weight and see long-lasting result without putting your health, or life at risk.

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This article has been reviewed and fact-checked by a certified nutritionist, and only uses information from credible academic sources.