Montelukast is a leukotriene receptor antagonist (LTRA) used for the maintenance treatment of asthma and to relieve symptoms of seasonal allergies.

Desloratadine is a tricyclic antihistamine, which has a selective and peripheral H1-antagonist action. It has a long-lasting effect and does not cause drowsiness because it does not readily enter the central nervous system.

Loratadine is antihistamine indicated for the symptomatic relief of allergy such as hay fever (allergic rhinitis), urticaria , and other skin allergies.For allergic rhinitis , loratadine is effective for both nasal and eye symptoms: sneezing, runny nose, itchy or burning eyes.

Montelukast is a leukotriene receptor antagonist (LTRA) used for the maintenance treatment of asthma and to relieve symptoms of seasonal allergies.

Levocetirizine is a third-generation non-sedative antihistamine,works by blocking histamine receptors. It does not prevent the actual release of histamine from mast cells, but prevents it binding to its receptors. This in turn prevents the release of other allergy chemicals and increased blood supply to the area, and provides relief from the typical symptoms of hayfever.

Theophylline, also known as dimethylxanthine, is a methylxanthine drug used in therapy for respiratory diseases such as COPD and asthma. The main actions of theophylline involve: Relaxing bronchial smooth muscle, increasing heart muscle contractility and efficiency; as a positive inotropic, increasing heart rate: positive chronotropic increasing blood pressure increasing renal blood flow some anti-inflammatory effects central nervous system stimulatory effect mainly on the medullary respiratory center.