Salbutamol + Theophylline

Salbutamol + theophylline is a combination medication primarily used to treat respiratory conditions such as asthma and chronic obstructive pulmonary disease (COPD)[5][7]. This combination leverages the complementary mechanisms of both drugs to provide enhanced bronchodilation. ## Mechanism of Action The combination works through two distinct but synergistic pathways: 1. **Salbutamol** (also known as albuterol) is a selective beta-2 adrenergic receptor agonist that relaxes bronchial smooth muscle, providing quick relief from bronchospasm[3][10]. 2. **Theophylline** is a methylxanthine that causes bronchodilation by increasing cellular cyclic AMP through a different mechanism than salbutamol[4][6]. When combined, these medications appear to have a synergistic effect, potentially allowing for lower doses of each component while maintaining or enhancing therapeutic efficacy[4]. ## Clinical Use This combination is primarily prescribed for: - Management of asthma symptoms - Treatment of chronic obstructive pulmonary disease (COPD) - Relief of bronchospasm ## Dosage The appropriate dosage depends on the patient's age, gender, medical history, and specific formulation[7]. The medication is typically available in tablet form, often with salbutamol at 2mg and theophylline at 100mg per dose[4]. ## Side Effects Common side effects include: - Nausea and vomiting - Stomach pain - Headaches - Restlessness - Trembling or shaking - Difficulty sleeping - Increased heart rate (tachycardia)[1][5] ## Research Findings Research on this combination has shown mixed results: - Some studies indicate that the combination may produce negative interactions, including tachycardia and reduced therapeutic function when administered at maximum oral dosage[1]. - Other research suggests patients with chronic bronchitis may benefit from the combination if steady-state theophylline concentrations of 15-20 mg/l are achieved[2]. - A study with 36 perennial asthmatics found the combination to be superior to individual components due to synergistic effects, with no added side effects[4]. The combination should be used with caution, particularly in patients with certain medical conditions such as thyroid disorders, high blood pressure, heart disease, or diabetes[3][5].

Other names

Theophylline Salbutamol Extended-release Tablet茶碱沙丁胺醇缓释片