Montelukast

Listed in Dosage.

Adult: PO Chronic asthma; Allergic rhinitis 10 mg once daily. Prophylaxis of exercise-induced asthma 10 mg to be taken 2 hours prior to exercise; no additional doses to be taken within 24 hours.

Aspirin-sensitive asthmatic patient must continue avoiding aspirin and other NSAIDs. Not intended for treatment of acute asthma attacks. Not recommended as monotherapy in treatment of moderate chronic asthma. Avoid abrupt substitution to oral or inhaled corticosteroids. Children. Pregnancy and lactation. Patient Counselling This drug may cause dizziness or drowsiness, if affected, do not drive or operate machinery. Monitoring Parameters Monitor for signs and symptoms of behavioural changes.

Significant: Behavioural changes (e.g. agitation, anxiety, depression, dream abnormalities, obsessive-compulsive disorder). Rarely, systemic eosinophilia, vasculitis with eosinophilic granulomatosis with polyangiitis (Churg-Strauss syndrome). Ear and labyrinth disorders: Otalgia, otitis media. Eye disorders: Myopia, conjunctivitis. Gastrointestinal disorders: Diarrhoea, nausea, vomiting, abdominal pain, dyspepsia, gastroenteritis. General disorders and administration site conditions: Pyrexia. Infections and infestations: Viral infection, tooth infection. Investigations: Elevated serum transaminase levels (ALT, AST). Nervous system disorders: Headache, drowsiness, dizziness. Respiratory, thoracic and mediastinal disorders: Upper respiratory tract infection, cough, acute bronchitis, influenza, laryngitis, pharyngitis, rhinorrhoea, sinusitis, sinus headache, pneumonia. Skin and subcutaneous tissue disorders: Rash, eczema or atopic dermatitis, skin infection, urticaria. Vascular disorders: Epistaxis.

Decreased plasma concentration with CYP450 inducers (e.g. phenytoin, phenobarbital, rifampicin). Gemfibrozil may increase montelukast serum concentration.

Antihistamines & Antiallergics / Antiasthmatic & COPD Preparations

R03DC03 - montelukast ; Belongs to the class of leukotriene receptor antagonists. Used in the systemic treatment of obstructive airway diseases.