Clenbuterol Side effects

Clenbuterol is a powerful fat burner that can help melt away body fat. While some of Clenbuterol’s benefits include fat loss, appetite suppression, increase in energy, etc. It does have a lot of side effects because of which it has not been approved by the FDA for human consumption.

Some of the most common Clenbuterol side effects could include increased heart rate, insomnia, palpitations, tremors, nervousness, anxiety, etc.

Clenbuterol side effects

This article takes you through some of the most common Clen side effects.

Clenbuterol Side Effects

Let’s have a look at some of the side effects of Clenbuterol:

Increased Heart Rate (Palpitations)

One of the most concerning side effects of Clenbuterol is that it can increase your heart rate to alarmingly high levels.

According to anecdotal evidence, Clenbuterol users may experience a heart rate of up to 180 beats per minute (more than twice the normal rate of 72 beats per minute).

Not just this, it can also lead to irregular heartbeat in some cases but that usually results from continued Clenbuterol use over a period of time.

This implies that it can be extremely dangerous for people who already have high blood pressure or other cardiac issues.


Clenbuterol works by stimulating your central nervous system and it tends to shift your body into fight or flight mode.

This is one of the main reasons for it increasing anxiety. It is worth noting that excessive arousal of the central nervous system makes a person perceive normal day-to-day situations as threats, which tends to take a toll on their mental health.

Not just this, an abnormally elevated heart rate along with palpitations may also increase anxiety since the user may think he/she is having a heart attack.

One of the ways to reduce anxiety and calm your nervous system is with the help of a sedative. However, this may prove counterproductive since it tends to lower the thermogenic effect of Clenbuterol.

Thus, having a sedative while on the Clenbuterol cycle can negatively affect fat loss because of less adrenaline and heat production in your body.

Moreover, excessive stimulation of the central nervous system or CNS is also linked to depression.

Anything that goes up must come down and this is what happens with clenbuterol too. Initially, Clenbuterol tends to increase dopamine levels in your body which drop later as you build tolerance to the drug or when you stop taking Clen (check study here).

Shaking or tremors are also common side effects of taking clenbuterol because of an excessive increase in adrenaline output. More often than not, this is a side effect that is limited to the hands of the user.


As stated above, Clenbuterol works by stimulating your central nervous system. Insomnia is one of the fallouts of a hyperactive CNS.

Some bodybuilders suggest having Clen earlier in the day so that they can better sleep at night. However, this protocol seems to be ineffective since Clenbuterol comes with a very long half-life of 35 hours.

So, even if you take it in the morning you will have Clenbuterol still peaking in your bloodstream by the time you try to hit the bed at night.

Lack of sleep can further make matters worse by increasing stress and the hormone Cortisol in your body, which is further likely to increase blood pressure and inhibit fat-burning as well.

Legal Clenbuterol Alternative in the UK

Burn by Capsiplex (for Men)

Clenbuterol side effects

Burn is a 100% natural formula that can help you get amazing fat-burning results. It is formulated especially for men and contains ingredients that can help stimulate testosterone production as well.

It not only burns fat but also helps supercharge your energy levels so as to help you get better results from your workouts.

It can also help improve your mood so that you do not feel tired or worn out when taking a calorie-restricted diet.

Capsiplex Burn has no negative side effects and has been getting awesome user reviews. Click here to read my detailed Capsiplex Burn review.

Capsiplex Trim (for Women)

Capsiplex Trim

Trim by Capsiplex is yet another excellent fat burner. It is only for women and can help you get outstanding fat-burning results. You can use it for both fat loss/weight loss or a cutting cycle.

Trim can help boost your metabolism so that your body is better able to burn fat. It can also help suppress your appetite so that you eat less and consume fewer calories.

On top of it, Trim can also help increase your energy levels and elevate your mood.

Trim does not have any side effects and has been getting incredibly positive user reviews.

Click here to check out my unbiased Capsiplex Trim review.


Clenbuterol, no doubt is an excellent fat burner. However, it can have a lot of negative side effects such as those mentioned above. One of the best ways to get rid of excess body fat is with the help of a natural fat burner such as Burn or Trim from Capsiplex.

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