Clenbuterol is very popular amongst bodybuilders and fitness enthusiasts. It is mostly used during the cutting stage because it is effective at burning off fat.

You have probably heard somebody in the gym mention Clen. A lot of people may claim that it’s among the best compounds when it comes to shredding fat.

But just how effective is it? And more importantly, how secure it is?

In this article, you will learn everything you need to learn about clenbuterol.


Before we dive deeper into this article, we ought to take a look at the compound Clenbuterol. Most importantly, we have to know exactly what it is.

Clenbuterol (Clen) is a bronchodilator. Bronchodilators are used by people that have asthma because it makes breathing easier. It first appeared in the industry right back in the late 1970s.

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Additionally, it is used for veterinary purposes, mainly in horses and cows.

You should be aware that clenbuterol has not been approved for human consumption.

However, that does not stop many people from using it to boost performance.

Besides Clenbuterol’s fat-burning abilities, many top athletes also use it to its performance-enhancing consequences. It is no surprise several athletes have also been caught testing positive for the compound.

It is NOT steroid-like plenty of people make it out to be. This means that it won’t be messing with your normal hormone production.

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Most of you are probably curious about how Clenbuterol works. When it comes to burning fat, clenbuterol essentially works as a stimulant.

The effects are very similar to those of Ephedrine, which you’ll discover in the ECA stack.

Clenbuterol has an intriguing mechanism. Let’s take a look at the consequences it causes.


As we mentioned previously, Clenbuterol is used to help with Asthma. This implies it radically improves breathing capacity.

It helps widen and relax the blood vessels. By doing so, it is going to assist with using more oxygen.



Clenbuterol really shines when it comes to burning fat.

By increasing the heart rate and blood pressure Clen increases metabolic energy and overall body temperature.

This causes your body to use more energy and burn more calories. Burning more calories means you are going to be losing weight much quicker.


What makes Clenbuterol interesting for bodybuilders is that it could help to preserve muscle mass. Especially when you’re in a caloric deficit, you are at risk of losing muscle mass.

Clen has shown to help increase relative muscle power during rehabilitation.

A good deal of bodybuilders also has claimed it helped them hold onto muscle mass a lot simpler.


By working as a stimulant, you can expect Clen to help with raising energy levels. This is the reason why a lot of top athletes use it, it helps them take things to another level.

Workouts will be more intensive and you are able to go on for longer. It’s also worth mentioning that Clenbuterol functions similar to adrenaline.


There are many distinct types of Clenbuterol cycles. You will see folks run it anywhere from two to 10 weeks. Some might even run it for more than that.

It is advisable to need to be at least 15% body fat or lower before conducting such a cycle. Additionally, it is a good idea to have Taurine available since Clen depletes it.

A very common clenbuterol cycle is the 2 weeks on 2 weeks away method. This is what this type of cycle might look like:

Day 1         20mcg
Day 2         20mcg
Day 3         30mcg
Day 5         40mcg
Day 6         40mcg
Day 7         50mcg
Day 8         50mcg
Day 9         70mcg
Day 10       70mcg
Day 11        90mcg
Day 12       90mcg
Day 13       90mcg
Day 14       90mcg

This cycle is accompanied by two weeks of NO Clen in any way. After those 2 weeks are over, rinse repeat.

By doing 2 weeks on and 2 weeks off, your body won’t get used to the effects. It’s said that with this process, you’ll keep experiencing the entire potential of Clen.

However, this is just one example of several different clenbuterol cycles. You’ll come across people that run it for longer and at higher doses that will greatly increase possible side effects. Therefore, it is not advised.


Be very careful with Clenbuterol. You don’t want to be carrying more than you can handle. Regardless of what anybody tells you, it can be dangerous.

Be very cautious when researching this compound. Do not increase the dosage if you don’t feel comfortable in doing so.


Most users start out with a dosage of 20mcg daily to find out how they react to the compound. From there on, they will gradually build up the dose with measures of 20mcg.

According to my research, most users build-up to a clenbuterol dose of 100-120mcg per day. Everyone has different levels of tolerance thus don’t go off what others say.


Clenbuterol can have severe side effects. It may be dangerous if you do not understand what you’re doing.

I definitely believe it to be one of the stronger fat burning compounds out there. I want to highlight the importance of educating yourself with this compound.

Personally, I am not a major fan of clenbuterol plus I strongly suggest to search for different alternatives.

The most reported side effects are:

  • Nausea
  • Insomnia
  • Tremors
  • Sweating
  • Increased blood pressure
  • Heart palpitations
  • Headaches
  • Stress
  • Greater body temperature
  • Muscle Cramps

There have been reports of users reporting severe poisoning from using Clen.

To be able to combat muscle cramps, it’s highly suggested to supplement with taurine and potassium. Be sure to eat foods rich in potassium such as banana’s, 2 or 1 ought to be sufficient.

In terms of the taurine, anywhere from 2 to 5 grams should be sufficient.


I have used Clenbuterol after, it had been several decades back. I’d used ECA stack a few occasions and was wondering what the Clen hype was about.

I opted to start with a 2-week cycle. My very first dose was 20mcg and from there on I gradually built up the dosage to 100mcg. In 100mcg, I could not handle it anymore.

When I’d lay in bed at night I’d feel my heart beating like crazy. The main side effects I experienced were shaky hands, heart palpitations, sweating profusely and nausea.

I lowered the dose and ended up finishing the cycle. The results I obtained were good but I think my preference goes from other stimulants such as Yohimbine or Ephedrine.

Clen certainly works, undoubtedly. But mainly due to the side effects I would much rather use other alternatives.


Clen can give fantastic effects but keep in mind, it is not a magic pill. You still have to ensure that your daily diet and exercise are on stage.

I’ve seen people lose up to 7-8lbs during one cycle.


For me, two weeks of Clen enabled me to lose about 5lbs of fat. Yes, it is a great deal but you put yourself at risk.

During a bicycle, you’re likely going to be experiencing a number of those mentioned side effects. It’s just something to keep in mind whether or not the results are worthwhile.


In my opinion, Clen is not worthwhile. The negative effects are extremely severe and should not be taken lightly.

You’re in a position to get very similar effects when using alternatives like Clenbutrol together with a fantastic diet.