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Clenbuterol: Dosages and Effects

Clenbuterol is a sympathomimetic amine generally used by people suffering from breathing problems as decongestant. It is a thermogenic drug which increases the aerobic capacity and stimulates the central nervous system with its long lasting and strong stimulating effects. It is a therapeutic drug used as a bronchodilator by asthma patients in some countries as it has muscle relaxing properties and helps in easy breathing.

Clenbuterol Side Effects

Perhaps it is one of the strongest and most effective drugs for reduction in weight and is quite popular among athletes and body builders but still there are lot of concerns and reports on the side effects of this drug. Even though many people using it believe it’s the strongest drug with almost no side effects but still many physicians believe that there are noticeable side effects of this drug irrespective of the amount taken by the individual.

Short Term Effects of Clen:

Clenbuterol generally known as Clen; works by raising the blood flow and metabolism of the individual. This drug burns off the excessive fats or lipids and helps the athletes in maintaining the physique but there are certain short term effects which indicate the consumption of drug like:

  • Sweating
  • Insomnia
  • Headaches
  • Breathing difficulties
  • Anxiety
  • Tremors
  • Dry mouth
  • Muscle cramps
  • Palpitations
  • Hypertension

It is a point to note that these short term effects vanish if the person stops using the drug after a cycle or two or after a short span of time.

Long term Clenbuterol Side Effects:

A lot of research has been done on the cause and effects of this drug and it has been found that collagen production increases by the use of this drug which reduces the effectiveness of heart in pumping the blood which could lead to Arrithymias (irregular heart beat). Also, its long term use affects the structure of the heart and makes the bone structure fragile. Overdose of this drug can cause severe effects like Hypokalaemia, Hypophosphatemia, and depletion of taurine etc. Another thing observed by some of the users was that they start gaining weight rapidly if they use it for 3-4 weeks and then stop for some time but still thousands of people have been able to enjoy the better effects of this drug and that too safely. So, it’s beneficial to have proper guidance before using the drug.

Clenbuterol Cycle

There are many ways to plan a Clenbuterol cycle but generally preferred cycles are:

Bursting Clenbuterol Cycle:

In this cycle the idea is to blast for 2 days with a high dosage of the drug and then avoid it for the next 2 days and then repeat the cycle. It is considered as most ineffective and strenuous way of using the drug.

Common Clenbuterol Cycle

This a 2 week on and 2 week off cycle and is quite popular among the performance enhancers. In this type of cycle the person starts from a low dosage of 20mcg-40mcg and then goes on increasing till the dose reaches the range of maximum desired limit that is 100-120 mcg and then avoid of usage after 2 weeks. It is most popular and effective because the body gets the time to adapt to change in metabolism within 2 week off and hence maintain a positive metabolic output.


With over 15 years of experience as a personal trainer, and a vast amount of knowledge on bodybuilding and anabolic steroids. My aim is to provide quality and helpful information.

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