Is Clenbuterol a Steroid?

is clenbuterol a steroid
Disclaimer: This article is for educational purposes only, we do not encourage the use of illegal steroids and the following isn't to be taken as medical advice.  

If you've ever set foot in a gym, you've almost certainly heard of clenbuterol.

So, what is it?

Clenbuterol, better known as clen, is a bronchodilator and a decongestant for patients with breathing disorders. Clen has gained popularity in the livestock industry where farmers use it as veterinary medicine. The drug is given to animals to help them gain significant amounts of fat-free mass.

Clenbuterol's ability to rapidly burn excess fat and build lean muscle in animals makes it appealing to bodybuilders and weightlifters.

So clen isn't a steroid, but some if its traits are similar to several anabolic steroids.


Clen increases your aerobic capacity by stimulating your central nervous system and increasing oxygen supply to the working muscles. Trenbolone also happens to stimulate the CNS in this way. However, clenbuterol's main effect is on your basil metabolic rate (a fancy term for metabolism) which will become turbocharged after just a few days of taking clen.

As a result, you'll burn fat and look more muscular due to increase definition and tone in the muscles.

Many steroids will spike your metabolism, although probably not to the same degree as clenbuterol.

Also clenbuterol is often associated with other steroids during cycles, being combined with;



• Testosterone

…So as you can imagine, it's quite an easy to mistake clen for being part of the anabolic steroid family.

Also like anabolic steroids, clen is illegal in most countries without a prescription (as it's not approved by the FDA).

Some people label clenbuterol as a cutting steroid because it can give similar (if not better) fat loss gains, compared to Anavar, Winstrol and Trenbolone. Clenbuterol is one powerful cutting agent, but it's not a steroid.

Clenbuterol also has some anabolic properties similar to steroids. Clen is known to quickly stimulate protein synthesis and protect a user from losing muscle during a cutting cycle. However, clenbuterol is a lot less anabolic in comparison to winstrol, anavar and trenbolone as it doesn't increase testosterone levels.

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The effects of Clen mimic adrenaline more than anabolic steroids. It works by stimulating the beta-2 receptor cells that cause thermogenic effects allowing you to burn fat whilst preserving muscle mass. Clen's anabolic effects are a lot more evident in animals though, so don't expect to gain 10lbs of muscle during a 2 week clenbuterol cycle. You'd have to consume high doses of Clenbuterol in order for it to reflect its anabolic effects. Such high doses would be hazardous to your health and simply not worth the risk.

The Difference between Clenbuterol and Anabolic Steroids

What is an anabolic steroid?

Steroids are synthetic substances that are derivatives of testosterone, which promote muscle growth and the development of male characteristics such as skeletal muscle and sexual functioning. Steroids' positive attributes have resulted in them being abused by bodybuilders, weightlifters and athletes on a worldwide scale.

The accurate definition for Clen would be a stimulant or a beta-2 agonistic drug that works on the beta-2 receptor cells. A cousin to epinephrine (adrenaline) but stronger with longer lasting effects. Clenbuterol is different from anabolic steroids as it works by stimulating the beta-2 receptor cells. These are cells in fat and muscle tissues. Stimulation of such receptors leads to the rise in your body temperature. This then increases your aerobic capacity, basal metabolic rate and acts as a muscle relaxant.

As a bodybuilder, Clenbuterol will:

• Help you take your workouts to the next level (in terms of intensity). Since clen will stimulate your central nervous system, more oxygen will be transported throughout your body, boosting your aerobic capacity  and allowing you to train for longer. For a bodybuilder this means being able to complete more reps and sets compared to usual with less rest inbetween.

• Increase your metabolic rate – helping you burn more calories.

• Help you retain your muscle mass. During a cutting cycle, clen will keep your muscles looking big whilst getting rid of the water and fat around the muscles.

Same Side Effects as a Steroid?

All drugs have side effects, and Clen is no exception. The effects of Clen may last up to 15 days with a variety of symptoms.

• Headaches

• Nausea

• Increased blood pressure

• Nervousness

• Insomnia

Ingestion of Clen in high doses is extremely dangerous. It has a long half-life and therefore if abused it can be fatal. Long term use of the drug can also cause cardiac problems and increase blood pressure levels.

Clen is frequently stacked with anabolic steroids to maximize its positive effects. These commonly used stacks are:

• Clenbuterol-Winstrol

• Clenbuterol-Anavar

These 2 stacks will help you burn more fat and build more muscle. However, users will also claim that clenbuterol still works perfectly well on its own.


The anabolic properties of Clenbuterol are very mild compared to steroids. Adverse side effects often kick in when a user gets impatient and increases their dose too early (trying to get instant results).

Research shows that clenbuterol's fat burning properties are more profound in comparison to steroids. You can get away with only using clen to get rid of unwanted fat, whereas a bodybuilder might have to take a few cutting steroids simultaneously to get the same effects.

Clenbuterol's side effects (when taken in safe doses) are fewer and less severe compared to steroids. Unlike with steroids, you don't have to worry about hair loss, gyno, low testosterone, liver damage or infertility.

Clen is capable of melting large amounts of body fat, especially when it's religiously combined with regular workouts and a proper diet. If you do all of this, you'll burn a tonne of calories, boost your cardiovascular performance and achieve an awesome lean body.


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