The generic name of kairatan is loratadine tablets, the difference between montelukast sodium and loratadine tablets is different in pharmacological effects, indications and adverse reactions. 1. Pharmacological effects: montelukast sodium is a leukotriene receptor antagonist, can specifically inhibit cysteinyl leukotriene receptors. Loratadine tablets are tricyclic antihistamines that inhibit the binding of histamine to its receptors. 2. Indications: Montelukast sodium is indicated for the prophylaxis and long-term treatment of asthma, prevention of exercise-induced bronchoconstriction as well as relief of the symptoms of allergic rhinitis. Loratadine Tablets are indicated for the relief of symptoms associated with allergic rhinitis, such as sneezing, nasal congestion, runny nose, burning sensation in the eyes, etc. It is also indicated for the relief of itching symptoms of urticaria and allergic skin diseases. 3. Adverse reactions: Adverse reactions to Montelukast sodium are mild and usually do not require termination of therapy. Adverse reactions reported since its introduction to the market include upper respiratory tract infection, arthralgia, and palpitations (rapid heartbeat, often accompanied by panic). Common adverse reactions to loratadine tablets include drowsiness, headache, dry mouth, gastrointestinal upset, and rash. Therefore, montelukast sodium and loratadine tablets belong to different kinds of medications, and it is necessary for your doctor to make a comprehensive judgment on which medication is more suitable according to the disease and symptoms.