budesonide + hydrocortisone hemisuccinate + terbutaline

This is a combination drug consisting of three active pharmaceutical ingredients: - **Budesonide** is a synthetic glucocorticoid corticosteroid with potent anti-inflammatory properties, primarily used in the management of asthma and other inflammatory airway diseases. It acts by binding to the glucocorticoid receptor, reducing inflammation and immune responses in the airways[2][7]. - **Hydrocortisone hemisuccinate** is a water-soluble ester of hydrocortisone (cortisol), used as a systemic corticosteroid for its anti-inflammatory and immunosuppressive effects. It acts via activation of the glucocorticoid receptor, modulating gene expression to suppress pro-inflammatory cytokines[8]. - **Terbutaline** is a selective beta-2 adrenergic agonist (short-acting beta agonist, SABA) that relaxes bronchial smooth muscle, leading to bronchodilation. It provides rapid relief from bronchospasm in conditions like asthma[3][4]. This combination has been studied for use in acute asthma management—particularly in emergency settings—where it aims to provide both rapid bronchodilation (terbutaline) and potent anti-inflammatory action (budesonide and hydrocortisone hemisuccinate)[1]. However, clinical studies suggest that adding nebulized budesonide to systemic hydrocortisone hemisuccinate does not confer significant additional benefit over hydrocortisone alone for acute adult asthma[1]. The combination may be considered when both immediate bronchodilation and strong anti-inflammatory effects are desired.