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Home » Clenbuterol Reviews: Side Effects, Results & Better Alternative

Clenbuterol Reviews: Side Effects, Results & Better Alternative

Clenbuterol Review

Clenbuterol comes under the category of Beta-2 agonist, a drug used to treat breathing disorders. It has also gained popularity among athletes and fitness enthusiasts due to its anabolic effects.

Clenbuterol claims to help you preserve lean muscle mass and reduce subcutaneous fat. Its ability to boost stamina and increase metabolism has made it appealing to people seeking weight loss goals.

However, Clenbuterol may cause some severe side effects. Thus, this review will talk about the potential health complications and legal status associated with Clenbuterol consumption.

We have also mentioned a safer and legal alternative to Clenbuterol and if it helps you achieve your desired gains without impacting your overall health.

What Is Clenbuterol?

Clenbuterol replicates the properties of anabolic steroids, potentially increasing muscle mass and improving physical performance.

Classified as a beta-2 agonist, Clenbuterol could boost adrenaline and noradrenaline production in the body, leading to accelerated fat burning and heightened energy levels.

Clenbuterol is used for various purposes, like promoting fat loss and maintaining lean muscle mass. It may help boost your basal metabolic rate and overall output to reduce accumulated fat stores.

Clenbuterol is a powerful drug often misused by athletes, fitness enthusiasts, and bodybuilders. Reports of its harmful side effects are found in various medical cases. Athletes who tried Clenbuterol showed harmful effects when they took it by mouth in doses from 20 µg to 30 mg per day.

Major side effects include erratic heartbeat, low blood pressure, chest pain, heart inflammation, heart attack, liver enlargement, high blood sugar, and, in severe cases, death.

There is no solid proof that Clenbuterol could improve physical performance, and it has raised doubts about its use by athletes and bodybuilders.

After consumption, only 70-80% of Clenbuterol gets absorbed, and the remaining half stays for at least 25- 39 hours in the body. Thus, prolonged usage has adverse effects on cardiovascular and neurological health.

It is illegal to distribute Clenbuterol in the U.S., and the FDA does not approve it for human use. Athletes and bodybuilders should be aware of unintentional Clenbuterol doping and ingestion as it has anabolic and lipolytic effects, which makes it listed on the prohibited list by WADA.

Clenbuterol Review

How Does Clenbuterol Work?

Clenbuterol is a decongestant and bronchodilator used to treat respiratory disorders. It could help narrow blood vessels to decrease congestion while relaxing airway muscles to open them up.

Clenbuterol may promote thermogenesis, which results in elevated body temperature and an accelerated metabolic rate. This metabolic enhancement could stimulate efficient fat burning and serve as a barrier against further weight accumulation.

As a beta-2 agonist, Clenbuterol may help convert your fat stores into energy to boost your weight loss efforts. It could also enhance your athletic performance to promote better lean muscle mass.

Despite its popularity, Clenbuterol lacks FDA approval for general consumption, which necessitates caution. Extended use of anabolic steroids like Clenbuterol might lead to adverse health consequences like insomnia and rapid heart rate.

Clenbuterol Benefits

  1. Lose Body Fat

    Clenbuterol has thermogenic properties, which could assist in the process of losing body fat by increasing the body’s core temperature. This rise in temperature may stimulate the metabolism, leading to increased calorie burn even while resting. Clenbuterol users may experience a reduction in their overall body fat percentage over time when combined with a suitable diet and exercise routine.

    Clenbuterol’s ability to act as a beta2-adrenergic agonist could promote lipolysis, the breakdown of stored fats into fatty acids for energy utilization. It could enable the body to use these fats as a primary energy source, thereby helping in weight loss efforts by promoting the release of fatty acids from adipose tissue.

  2. Increase Strength & Endurance

    Clenbuterol’s impact on increasing strength and endurance is a significant aspect often sought after by users aiming to enhance their physical performance capabilities. It may lead to improved oxygen transportation, ultimately boosting endurance levels during workouts. Clenbuterol could promote thermogenesis, which can assist in enhancing muscle strength and power output by increasing adrenaline production in the adrenal gland.

    Athletes and bodybuilders often turn to Clenbuterol to push their limits during training sessions, as the drug’s performance-enhancing effects might result in increased workout intensity and prolonged exercise duration. The improved breathing capacity and oxygen utilization stimulated by Clenbuterol may contribute to better endurance levels, allowing users to sustain physical exertion for longer periods.

    Moreover, Clenbuterol’s potential to prevent muscle wasting could support strength gains by preserving lean muscle mass.

Customer Responses To Clenbuterol

Adverse Effects Reported Symptoms
Increased Heart Rate Palpitations
Trembling Shaking, Muscle Tremors
Anxiety Nervousness, Restlessness

Customer responses to Clenbuterol have been negative, highlighting the necessity of caution during consumption.

Some users who have included Clenbuterol in their routine for weight loss efforts have reported a loss of appetite and nausea after its consumption. They shared an uneasy feeling, which has made them skip their workout sessions for about a week.

Gym enthusiasts have noticed rapid heartbeats and decreased energy as they consumed Clenbuterol before their training sessions, affecting their overall performance and workout potential.

Shortness of breath and mild chest pain are also observed in some users taking Clenbuterol. They have shared that lifting even a small weight has become difficult after they started using Clenbuterol.

Although Clenbuterol is known for supporting lean muscle mass, users have witnessed uneven body composition with no effect on their subcutaneous fat even after using Clenbuterol for two months.

Many Clenbuterol consumers have seen increased anxiety and persistent headaches, making it difficult for them to keep themselves motivated and focused on their performance.

Clenbuterol Alternative

Choosing a safer and legal alternative like Clenbutrol could help you maximize your workout potential without posing any health risks associated with steroid intake.

Manufactured by Brutal Force, Clenbutrol could help you burn excessive calories and surplus body fat through its powerful thermogenesis effect.

Clenbutrol may improve blood flow and oxygen delivery in the body, assuring that your muscles receive vital nutrients required for growth and maintenance.

The makers believe that Clenbutrol might enhance your cardiovascular health, providing an energy boost to keep you motivated throughout the session. Having elevated energy levels could empower you to push harder through your training sessions.

According to the creators, Clenbutrol may boost your metabolic rate, a speed at which the body burns fat. With the help of increased metabolism, Clenbutrol could improve your body’s natural ability to burn fat effectively even while resting.

Clenbutrol is a pre-workout formula to help you optimize your training sessions to achieve more lean and sculpted physiques. The makers affirm that Clenbutrol could decrease energy crashes and fatigue after or during intense workout sessions, helping you lift heavy weights without any discomfort.

Ingredients like guarana extract and garcinia Cambogia in Clenbutrol might help decrease fat accumulation and curb appetite. They could help you control your portion size and eliminate unhealthy eating habits by suppressing hunger and cravings.

The manufacturer of Clenbutrol provides a generous 60-day refund policy, providing enough time to try and analyze its effectiveness.

As per its official website, Clenbutrol is made in a GMP-approved facility with carefully selected components. The ingredients used in Clenbutrol are lab-tested for their efficacy and potency as a natural muscle enhancement formula.

Side Effects Of Clenbuterol

  1. Heart Palpitations

    Heart palpitations, characterized by a fluttering or rapid heartbeat sensation, are a common side effect associated with the use of Clenbuterol. Clenbuterol may activate beta-2 adrenergic receptors in the body, leading to a rise in heart rate as a result of its stimulant effects. Some users could experience mild chest pain along with increased heartbeat, causing them a feeling of uneasiness.

  2. Chest Pain

    While Clenbuterol is precisely known for its weight loss and performance-enhancing effects, it might also lead to adverse reactions such as chest pain due to its stimulant properties.

    You may experience a heavy feeling in the chest due to increased heart rate and blood pressure, which puts an extra burden on the heart. This cardiac workload could manifest as chest aches or discomfort while breathing.

  3. Tremors

    Tremors, involuntary shaking movements, can be a notable side effect associated with the use of Clenbuterol. Clenbuterol could stimulate the central nervous system and can lead to increased excitability and energy levels, which may manifest as tremors or shaking in some users.

    The shaking induced by Clenbuterol usage might vary in intensity from mild to intense and could be accompanied by symptoms such as increased heart rate, anxiety, and sweating.

  4. Anxiety

    Side Effects Description
    Anxiety The feeling of unease or fear
    Tremors Involuntary muscle shaking
    Increased Heart Rate Acceleration of heartbeats
    Insomnia Difficulty falling asleep

    Anxiety can manifest as a feeling of unease, worry, or fear. Some users might notice a churning feeling in their stomach, accompanied by restlessness and hot flushes after taking Clenbuterol.

    Irregular heartbeat, excessive sweating, and body aches are common in consumers experiencing anxiety. Consuming Clenbuterol could lead to these symptoms by affecting your nervous system and overall cognitive health.

  5. Electrolyte Imbalance

    Clenbuterol consumption could disrupt the body’s normal functioning and lead to various complications like muscle weakness, cramps, irregular heartbeat, and even cardiac arrest. It happens due to an imbalance in potassium levels in the blood caused by Clenbuterol.

    Electrolyte imbalance caused by Clenbuterol might also contribute to water retention in the body, causing swelling, particularly in the extremities, and putting extra strain on the heart and kidneys.

  6. Rapid Breathing

    Clenbuterol’s ability to stimulate the beta-2-adrenergic receptors in the body could lead to bronchodilation and an increase in oxygen intake. While rapid breathing can be a natural response to physical exertion or stress, the use of Clenbuterol might worsen this effect, causing users to breathe at a faster rate, even during periods of rest.

    Rapid breathing caused by Clenbuterol can be concerning, especially for consumers with pre-existing respiratory concerns such as asthma or chronic obstructive pulmonary disease. In such cases, the increased respiratory rate may worsen underlying breathing difficulties and lead to discomfort or shortness of breath.

  7. Heightened Nervousness

    Clenbuterol has been reported to increase feelings of nervousness and restlessness in users, potentially leading to difficulty in daily tasks. Some consumers may experience trouble focusing on their workouts and regular activities due to the adverse impact of Clenbuterol on their minds. Clenbuterol could make you feel irritated and frustrated, causing little to no motivation for your weight loss efforts.

  8. Sleep Disturbances

    Some Clenbuterol users might find it challenging to sleep at night, potentially affecting their mental and emotional health. They may notice racing thoughts after consuming Clenbuterol, which could disrupt their sleep pattern and ability to stay asleep. Not getting enough may make it hard to remember things and stay focused on tasks that require attention.

  9. Headaches

    Users using Clenbuterol may experience headaches as a potential side effect of the drug’s physiological impact. Headaches can be bothersome and affect your daily activities. It is essential to monitor the intensity and frequency of headaches while using Clenbuterol to ensure they do not become severe or persistent.

    Some consumers may feel constant pain and aches on either one side or both sides of their head, making it difficult to lay down or take rest. Having headaches could impact your ability to engage in daily tasks, leading to unproductivity.

  10. Cardiac arrest

    Clenbuterol could increase the possibility of cardiac arrest by causing rapid heartbeat and dilation. The harmful effect of Clenbuterol on heart health makes it unsuitable for users with fluctuating blood pressure levels and heart problems. Cardiac arrest may manifest as a sudden loss of responsiveness and consciousness with prolonged intake of Clenbuterol.

  11. Muscle Cramps

    Some consumers might experience muscle discomfort and cramps after including Clenbuterol in their routine. These cramps could affect their ability to perform better during physical tasks by restricting their body’s flexibility and movement. Clenbuterol could also cause unbearable pain in the muscles, causing fatigue and increased recovery time.

  12. Thyrotoxicosis

    Clenbuterol could cause heat intolerance in some consumers, making them feel too warm even at room temperature. Thyrotoxicosis is a severe concern related to Clenbuterol intake, which may manifest as irregular menstrual cycles, fatigue, and muscle weakness. Some users could also notice a sudden weight reduction after using Clenbuterol, making them appear weak.

  13. Gastric Irritation

    Clenbuterol prolonged usage or inappropriate consumption may cause digestive issues in some users, including vomiting and loss of appetite. Some consumers might experience aches in their stomachs, causing them indigestion and severe hiccups. Poor digestive health caused by Clenbuterol could result in irregular and poor bowel movements.

Usage Of Clenbuterol

Food and Drug Administration does not approve Clenbuterol for human use in the United States. However, the FDA has authorized the liquid form of Clenbuterol for the treatment of airway obstruction among horses.

While the FDA has not approved the use of Clenbuterol for human usage, it is available by prescription outside the U.S. for managing asthma and chronic obstructive pulmonary disease (COPD).

Apart from Clenbuterol’s veterinary use, it has been found to be an adulterant in illicit drugs like heroin, highlighting its presence as an abused substance.

Clenbuterol’s ability to enhance muscle growth and reduce body fat has resulted in its misuse in bodybuilding and athletic performance enhancement.

Also See: CCUT Review: Is It A Safer Alternative To Clenbuterol By BrutalForce Or Scam?

Clenbuterol for Bodybuilding

Athletes and bodybuilders misuse Clenbuterol for its fat-burning properties to enhance muscle mass and cut weight. Here are some points regarding the use of Clenbuterol for bodybuilding:

  • Thermogenesis Effect: Clenbuterol may help elevate body temperature through thermogenesis, enhancing metabolism and enabling the body to burn more calories stored as fat.
  • Bronchodilation: Acting as a bronchodilator, Clenbuterol could widen the airways, providing increased airflow that may boost stamina and performance during physical activities.
  • Steroid Alternative: Despite being illegal in the U.S., Clenbuterol is favored by some athletes as a non-steroidal option for muscle building and weight loss, mimicking the effects of anabolic steroids without the same classification.

Misuses of Clenbuterol

Even when Clenbuterol lacks FDA approval for human consumption in the U.S., people still misuse Clenbuterol for their muscle enhancement and weight loss benefits.

This unapproved use has led to significant health risks and adverse effects associated with clenbuterol consumption. Some of the dangers and consequences of misusing Clenbuterol include:

  • Toxicity at Low Doses: Clenbuterol could cause toxicity even at low doses, leading to severe symptoms like tremors, seizures, and, in extreme cases, cardiac arrest.
  • Hazardous Side Effects: The misuse of Clenbuterol might lead to dangerous side effects such as rapid heart rate, tremors, and hypokalemia, which can have serious implications on overall health.
  • Immediate Medical Attention: Poisoning from Clenbuterol requires immediate medical attention due to the potentially life-threatening consequences associated with its toxic effects.

Frequently Asked Questions

  • Is Clenbuterol Legal for Human Use in Any Country?
    Clenbuterol is banned for human use by the FDA. It is available in liquid form for relaxing the airway passages in horses. Outside the US, Clenbuterol could be prescribed for Ashtma conditions.
  • What Are the Long-Term Effects of Clenbuterol on the Body?
    Long-term effects of Clenbuterol on the body may include heart complications, such as increased heart rate, palpitations, and potential cardiac hypertrophy. Moreover, there could be risks of developing anxiety, tremors, and electrolyte imbalances.
  • Can Clenbuterol Interact With Other Medicines or Supplements?
    You are not advised to take Clenbuterol with drugs that could cause loop diuretics and corticosteroids as it may increase the risk of cardiac arrhythmias. Thus, it is better to avoid taking Clenbuterol as it comes with severe side effects like headaches, increased heart rate, and anxiety.
  • How Does Clenbuterol Impact Hormone Levels in the Body?
    Clenbuterol may impact hormone levels by stimulating the beta-2 adrenergic receptors, leading to increased release of hormones like adrenaline and noradrenaline. It could influence metabolism, muscle growth, and fat breakdown in the body.
  • Are There Any Other Natural Alternatives to Clenbuterol for Weight Reduction?
    Some natural options for weight loss may include green tea extract, caffeine, conjugated linoleic acid (CLA), and protein supplements. These could help increase your metabolism, promote fat loss, and support your weight management goals.


Clenbuterol strives to promote muscle gain, better respiratory health, and improved athletic performance. However, its negative user experiences, prohibition by WADA, and disapproval by the FDA indicate a flawed safety profile.

Clenbutrol could be a legal and safer alternative to Clenbuterol, providing thoroughly researched ingredients to support effective fat reduction and muscle preservation.

Staying mindful of how many calories you consume and making sure you get enough protein may help you stay at a healthy weight because it could make you feel full for extended periods.

Doing intense workouts could also help you get a toned and fit body by working all your muscles.

Drinking enough water, getting good sleep, and avoiding stress can make you feel better and improve your health, potentially enhancing your muscle growth results.

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This project was supported in part by NSF Grant IIS-03-25867 (ITR: An Electronic Field Guide: Plant Exploration and Discovery in the 21st Century) and by the Washington Biologists' Field Club.
Any opinions, findings, conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the official views, opinions, or policy of the National Science Foundation (NSF).