Hello As your son is having asthma so these measures may help. Avoid exposure to dust , mite , pests ( cockroaches ) , pollen , hay , fodder , molds , fine dusting powder , sudden fall and rise of temperature because these are triggering factor of asthma . Measures to reduce exposure to indoor allergens Wash all bed covers in hot cycle ( 60 C ) every week. Treat carpets with acricides or tannic acid . Clean upholstered furniture thoroughly or replace with leather . Replace curtains /blinds or easily washable curtains. Hot wash / freeze soft toys. Use vacuum cleaner . Install A /C or dehumidifier . When such patient visit with asthma I advise my patient to take montelekast+ bambuterole tablet( 0.2 mg / kg body weight of each tablet) once or twice in day depending on severity of symptoms . Usually my patient respond this treatment very well and don t require any inhalers . I don t know much about homeopathy. Hope this will be helpful for you.