Clenbuterol
4-amino-3,5-dichloro-α-[[(1,1-dimethylethyl)amino]methyl]benzenemethanol. Beta-2 Agonist, sympathomimetic.
This page describes what Clenbuterol is and its known risks. It is not medical advice and not a guide to using it. Many of these substances are prescription-only or illegal to use without a prescription. Speak to a doctor.
- Class
- Beta-2 Agonist
- Legal status
- Not approved for human use (USA) / Veterinary use only
- Half-life
- 36-48 hours
- Liver strain
- Low
- Kidney strain
- Low
- Converts to estrogen
- None
- Suppresses natural hormones
- Not typically
Medical uses
- Asthma (outside USA)
- COPD (outside USA)
- Veterinary bronchodilator
What it does in the body
Metabolic
- Increased metabolic rate
- Fat loss (lipolysis)
- Thermogenesis
- Appetite suppression
- Mild anti-catabolic effects
Respiratory
- Bronchodilation
Forms, half-life and detection
| Form | Half-life | Reported detection window |
|---|---|---|
| Oral | 36-48 hours | 4-5 days |
Side effects and health risks
Heart and blood vessels
- Increased heart rate (tachycardia)
- Palpitations
- Arrhythmias
- Increased blood pressure
- Cardiac hypertrophy (long-term)
- Increased risk of heart attack
Neurological
- Tremors (hands)
- Anxiety
- Insomnia
- Nervousness
- Headaches
Metabolic
- Electrolyte imbalances (potassium depletion)
- Muscle cramps
Other
- Excessive sweating
- Nausea
Questions
What is the half-life of Clenbuterol?
About 36-48 hours. Half-life is the time for the level in the blood to fall by half.
How long is Clenbuterol detectable?
Testing windows of 4-5 days are reported, depending on the test and the person.
Is Clenbuterol legal?
Not approved for human use (USA) / Veterinary use only. Laws differ by country and change; check the rules where you live.
What blood tests matter with Clenbuterol?
Ask a doctor which tests suit you.
What are the side effects of Clenbuterol?
Heart and blood vessels: increased heart rate (tachycardia), palpitations and arrhythmias. Neurological: tremors (hands), anxiety and insomnia. Metabolic: electrolyte imbalances (potassium depletion) and muscle cramps.
For information only, not medical advice. MyoStats is a tracking tool used at your own discretion. Speak to a doctor before changing your training, diet, medication or anything you take.