It seems that your son has bronchial asthma
Bronchial Asthma is hyperactivity of lung to different stimuli (like - dust, pollen grains, smoke etc) that causes constriction of airways. Patient develops tightness of chest, cough, respiratory distress
Asthalin contains salbutamol - a medicine that causes dilatation of lung airways and thus relieve the respiratory distress. It is a SOS medicine and only requires at time of asthma attack (severity of symptoms). It has less side effects when given through inhalation (if possible) than given oral.
Montek LC - Contains Montelukast and Levocetrizine. It is more a preventive drug for asthma and seasonal allergy
. It is used for some period duration as a maintenance drug. It is not effective for acute attack. It is a very well tolerated drug and has few side effects. Side effects are - Dizziness, fatigue, fever; rash; abdominal pain, dyspepsia, dental pain, gastroenteritis; increased AST; weakness; cough, nasal congestion
. Aggression, agitation, angioedema, arthralgia, bleeding tendency, bruising, cholestasis, diarrhoea, dream abnormalities, drowsiness, oedema, eosinophilia, hallucinations, hepatic eosinophilic infiltration (rare), hepatitis, hypersensitivity
, hypoaesthesia, insomnia, irritability, muscle cramps, myalgia, nausea, palpitation, pancreatitis, paraesthesia, pruritus, restlessness, seizure, urticaria, vasculitis, vomiting, Anaphylaxis, Churg-Strauss syndrome
However, side effects are rarely seen in children.
Montek-LC can be given (and usually given) for long term to prevent attack of asthma, seasonal allergy. Every case of asthma / seasonal allergy may need individual dosing and treatment protocol. Please consult your pediatrician
for duration of treatment.