What is Salbutamol?
Salbutamol (also known as albuterol) is a short-acting beta-2 adrenergic agonist inhaled for treating asthma and other obstructive airway diseases. It works by stimulating beta-2 receptors on airway smooth muscle, resulting in bronchodilation (airway widening). Salbutamol is the most commonly prescribed asthma rescue medication worldwide.
Research examines salbutamol's effects on athletic performance and metabolic functions. This information is for research and educational purposes only. No medical advice.
How it works
Salbutamol works by stimulating beta-2 adrenergic receptors with the following effects:
- Relaxation of airway smooth muscle
- Bronchodilation and improved airflow
- Increased cAMP synthesis in bronchial cells
- Inhibition of inflammatory mediator release from mast cells
- Stimulation of mucus clearance
- Minimal systemic absorption with low beta-1 effects
Administration and dosing
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What the research shows
Clinical trials and research indicate that salbutamol:
- Effectively increases FEV1 (lung volume) in the short term
- Shows NO consistent performance gains in non-asthmatic athletes at WADA-permitted doses (600 mcg over 8 hours)
- Has no effects on sprint ability, endurance strength, or submaximal performance in controlled studies in healthy athletes
- Provides bronchospasm protection in asthmatic athletes
- Has minimal systemic absorption with inhalation and low bioavailability
- Effect is highly dependent on presence of asthma or airway hyperresponsiveness
Side effects
Common local side effects (inhalation):
- Nervousness and tremor
- Headaches
- Tremor, especially of the hands
- Tachycardia and palpitations
- Sleep disturbances
- Muscle tension
Most side effects are dose and time-dependent and reversible. Serious side effects are very rare with inhalation at therapeutic doses.
Storage
Salbutamol inhaler doses should be stored at room temperature, protected from direct sunlight and extreme heat. Temperature should be between 15-25 degrees Celsius. Metered dose inhalers should not be refrigerated and should NOT be frozen as this can damage the pressurized canister. The canister should be shaken regularly to ensure uniform mixture before use. The mouthpiece should be rinsed with warm water after each use.