Salbutamol: Uses, Dosage, Side Effects & Brands | MedexInfo

Salbutamol

Rx

Generic NameSalbutamol

Therapeutic ClassSABA (Short-acting β2 agonist)

Common Strength100 µg per inhalation (MDI), 2 mg tablet, 2 mg/5 mL syrup

Max / 24hAs prescribed; usually 800 µg via inhaler or 8 mg oral

PregnancyGenerally considered safe if clearly needed

Indications ▼

Relief of acute bronchospasm in asthma

Management of chronic obstructive pulmonary disease (COPD)

Prevention of exercise-induced bronchoconstriction

Mechanism & Pharmacokinetics ▼

Mechanism: Salbutamol is a selective β2-adrenergic receptor agonist that relaxes bronchial smooth muscle, leading to bronchodilation and relief of airflow obstruction.

Pharmacokinetics: Rapid onset (5–15 min inhalation). Oral absorption slower; metabolized primarily in the liver; excreted mainly via urine. Half-life approximately 4–6 hours.

Dosage & Administration ▼

Formulation	Dose	Frequency
Inhaler (MDI)	100–200 µg	Every 4–6 hours as needed; 15–30 min before exercise
Nebulizer solution	2.5 mg in 2–5 mL saline	Every 4–6 hours as needed
Tablet	2–4 mg	3–4 times daily
Syrup	2 mg/5 mL	3–4 times daily

Note: Use inhalation route preferentially for rapid relief. Adjust dose based on age, severity, and response.

Side Effects ▼

Tremor, nervousness

Palpitations, tachycardia

Headache, dizziness

Muscle cramps

Rare: hypokalemia, arrhythmia

Contraindications ▼

Hypersensitivity to salbutamol or any component

Severe cardiovascular disorders (relative caution)

Drug Interaction ▼

Non-selective β-blockers: may reduce bronchodilator effect

MAO inhibitors, tricyclic antidepressants: may enhance cardiovascular effects

Diuretics: risk of hypokalemia

Pregnancy & Lactation ▼

Use only if clearly needed; generally considered safe in pregnancy

Excreted in breast milk; monitor infant if used during lactation

Clinical / Research Summary ▼

Clinical Role: First-line short-acting bronchodilator for acute relief of bronchospasm in asthma and COPD.

Advantage: Rapid onset, effective for both acute attacks and pre-exercise prophylaxis.

Limitation: Does not treat underlying inflammation; frequent use indicates need for controller therapy.

Monitoring: Symptom relief, heart rate, potassium in high-risk patients.

Patient Counseling Points ▼

Use inhaler as directed; shake before use

Rinse mouth after inhalation if using corticosteroid combination

Report palpitations, chest pain, or excessive tremor

Keep rescue inhaler accessible at all times

Storage & Handling ▼

Store below 30°C

Protect from moisture and light

Keep out of reach of children

Brand Names (Bangladesh & Global) ▼

Bangladesh:

Sultolin® 100 mcg Salbut® 2 mg Tablet Salbutal® 2 mg Tablet Salbutal® 4 mg Tablet Salbutex® 2 mg Tablet Salbutex® 4 mg Tablet Salmol® 4 mg Tablet Sabutanol® 4 mg Tablet Salbu® 4 mg Tablet G‑Salbutamol® 4 mg Tablet Salix® 4 mg Tablet Salbutamol® Syrup Salbusol® Syrup Salbu® Syrup Salix® Syrup G‑Salbutamol® Syrup Salmolin® 100 mcg Salburen® 100 mcg Salomax® 100 mcg Proventa® DPI 200 mcg PulmoCare® DPI 200 mcg

Global:

Ventolin® Proventil®

Medical Disclaimer: For educational purposes only. Not a substitute for professional medical advice.

Reference Hubs:

• Drug Class: Short-acting β2 Agonists • Condition: Asthma • Condition: COPD