β2-agonistsβ2-agonistA compound that activates the β2-adrenergic receptor, typically triggering bronchodilation and a metabolic cascade.
Clenbuterol vs Albuterol
The table compares the compounds’ key data from their entry pages. Open each compound’s full entry for details. Educational content, not medical advice.
 Clenbuterol | Albuterol | |
|---|---|---|
| What it is | Selective β2-adrenoceptor agonist, EU veterinary Rx for equine asthma. Off-label bodybuilding use for fat loss + muscle sparing. | FDA-approved selective β2-agonist asthma Rx (Ventolin). Shorter half-life, safer Clenbuterol alternative. |
| MechanismMechanism of actionThe molecular pathway by which a compound acts in the body (e.g. which receptor or enzyme it binds). | Selective β2-adrenoceptor agonist | Selective β2-adrenoceptor agonist |
| Half-lifeHalf-lifeThe time for the compound’s plasma concentration to fall by half; indicates how fast it clears and how often it is dosed. | 35-40 hours | 5-6 h (oral), 1.5-3 h (inhaled) |
| OnsetOnsetThe time from dosing until a measurable effect appears. | 15-30 min | 5-15 min (inhaled), 15-30 min (oral) |
| Legal statusLegal / WADA statusThe compound’s regulatory status (e.g. prescription) and its place on the WADA prohibited-in-sport list. | EU: vet-Rx (equine asthma). HU: vet-Rx. USA: not approved for humans. | USA: FDA Rx (Ventolin/ProAir). HU/EU: Rx (Ventolin). WADA: inhaled <1600 μg permitted. |
| Full entry | Open → | Open → |
What it is
ClenbuterolSelective β2-adrenoceptor agonist, EU veterinary Rx for equine asthma. Off-label bodybuilding use for fat loss + muscle sparing.
AlbuterolFDA-approved selective β2-agonist asthma Rx (Ventolin). Shorter half-life, safer Clenbuterol alternative.
MechanismMechanism of actionThe molecular pathway by which a compound acts in the body (e.g. which receptor or enzyme it binds).
ClenbuterolSelective β2-adrenoceptor agonist
AlbuterolSelective β2-adrenoceptor agonist
Half-lifeHalf-lifeThe time for the compound’s plasma concentration to fall by half; indicates how fast it clears and how often it is dosed.
Clenbuterol35-40 hours
Albuterol5-6 h (oral), 1.5-3 h (inhaled)
OnsetOnsetThe time from dosing until a measurable effect appears.
Clenbuterol15-30 min
Albuterol5-15 min (inhaled), 15-30 min (oral)
Legal statusLegal / WADA statusThe compound’s regulatory status (e.g. prescription) and its place on the WADA prohibited-in-sport list.
ClenbuterolEU: vet-Rx (equine asthma). HU: vet-Rx. USA: not approved for humans.
AlbuterolUSA: FDA Rx (Ventolin/ProAir). HU/EU: Rx (Ventolin). WADA: inhaled <1600 μg permitted.
Full entry