[Drug therapy for cough]

Area of Science:

• Pharmacology and Therapeutics
• Respiratory Medicine

Background:

• Cough therapy often necessitates identifying and treating the root cause, such as asthma.
• In many cases, an underlying disease is not identified, or conventional treatments prove ineffective for cough relief.

Purpose of the Study:

• To explore drug therapy options for cough when underlying diseases are not found or conventional treatments fail.
• To provide guidance on selecting appropriate medications based on the suspected cause of persistent cough.

Main Methods:

• Review of pharmacological interventions for various cough etiologies.
• Categorization of drug recommendations based on associated conditions (respiratory infections, allergic rhinitis, asthma, malignant disease, idiopathic cough).

Main Results:

• Specific drug classes are recommended for different cough types: honey/menthol for infections, antihistamines for allergic rhinitis, leukotriene/muscarinic receptor blockers for asthma-associated cough, and morphine for malignant disease-related cough.
• Menthol, muscarinic receptor blockers, or dextromethorphan are suggested for prolonged idiopathic cough.
• Codeine is deemed unnecessary for cough treatment, and non-drug interventions should be considered.

Conclusions:

• Targeted pharmacotherapy provides viable options for managing cough when underlying causes are elusive or resistant to standard care.
• Treatment selection should be guided by the specific clinical context and suspected etiology of the cough.
• Non-pharmacological approaches and judicious use of medications, avoiding unnecessary drugs like codeine, are emphasized.