What Is Clenbuterol And What Are its Side Effects?

clenbuterol info about dosage usage and side effects

General information about Clenbuterol

You’ve probably already heard about Clenbuterol. It is a drug that belongs to a category known as beta2-agonists. These drugs are known to cause dilation of bronchial muscles. The products that belong to the beta2-agonists category are known to help with asthma treatment.

Clenbuterol isn’t only used for the treatment of illnesses, it has become a go-to supplement for people that want to lose weight. This happens because of its incredible effects on fat reduction and general muscle growth.

If you want to find out more about the side effects, safety, and usage of this drug, then continue reading this article.

Clenbuterol usage

Tread lightly with this medication, because it isn’t approved for human usage just yet. Clenbuterol has only been approved by the FDA for airway obstruction treatment in horses, and only in liquid form.

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Clenbuterol is available by prescription, but only for asthma treatment and only outside of the United States. It is rarely prescribed for the treatment of chronic obstructive pulmonary disease, or COPD.

Although people refer to clenbuterol as an anabolic steroid, you should know that this drug isn’t really a steroid, it just has properties similar to steroids, like promoting weight loss and muscle mass growth. This is why it has been used to increase the amount of lean muscle in livestock.

The drug can still be found in the meat of livestock after it has been butchered, and this has led to illness in Europe and Asia. Because of this, the United States and Europe monitor tissue samples from livestock in order to detect the presence of clenbuterol.

Clenbuterol is also a precursor substance in some street drugs like heroin.

Weight loss, muscle gain, and performance enhancement

People that have used clenbuterol have observed both an increase in muscle mass and a reduction of their body fat. This substance will continue to give effects to the body for up to six days after consumption and it will remain detectable in blood and urine for even longer. All of these attributes make it a great supplement for almost instant weight loss and athletic performance improvement.

At some point, after using it for weight loss or athletic performance, people will go to anabolic steroids for even faster results. This, of course, isn’t something we recommend.

There have been studies made to show the efficacy of clenbuterol for physical performance and weight loss in humans, but these are still very limited. Studies in animals and livestock on the other hand are enough and show some common results:

  • A reputable study in horses found that clenbuterol can change the metabolism and the expression of genes related to muscle components and fats if used for enough time.
  • Muscle growth will occur at the expense of fats, as shown in studies in livestock. This process is commonly referred to as repartitioning.
  • In mice and rats, clenbuterol has managed to stimulate muscle growth while also repairing damaged muscle tissue.

Clenbuterol is listed on the World Anti-Doping Agency’s (WADA) Prohibited List, despite there being very few studies and minimal evidence to indicate that it has connections to physical performance enhancement.

Clenbuterol has noticeable side effects

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When poorly used or overused, clenbuterol can have negative side effects on your body. Among these are:

  • electrolyte imbalance
  • anxiety
  • tremors
  • chest pain
  • heart palpitations
  • rapid breathing
  • increased heart rate

Two poison control centers have created studies showing that 11 of the 13 cases of adverse reactions to clenbuterol were due to the usage of this drug in bodybuilding or weight loss.

Dosage and administration

If you plan to take the drug to control your asthma symptoms, then the recommended dosage is 0.02 to 0.03 mg/day. You will find this medication in inhaler form or tablet form in most pharmacies, as an asthma treatment. Use this asthma treatment as many times as needed rather than keeping an eye on the recommended dosage, if prescribed by your doctor. This means that you should use it as any other bronchodilator.

People that use clenbuterol for performance enhancement and weight loss, will usually acquire it in tablet, liquid, or injection form. They will usually take anywhere from 0.06 to 0.12 mg/day, up to 4 times more than the recommended dosage. This is the primary reason why the side effects will occur.


Remember that you can’t acquire clenbuterol legally in the United States, because it isn’t approved by the FDA for human usage. If you live outside the US, you can get the drug to treat your COPD or asthma. The medication is commonly used for athletic performance enhancement or weight loss.

Clenbuterol is on the World Anti-Doping Agency’s (WADA) Prohibited List. If you test positive for the usage of this drug you can be disqualified from participating in professional competitive sports.

YOu can experience negative side effects if you overuse or misuse clenbuterol.

It is very important to strictly follow the dosage guidelines and only use clenbuterol as prescribed by your physician.

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