Hello Thanks for choosing H.C.M. for query. As you said that you are having cold and cough for last 3 years and whenever you take telecast -L you got relief and once the effect of drug is over your symptoms reoccurs. Your this clinical history clearly indicates that you are suffering from Allergic Rhinitis. Here I would like to tell you that there is no grass root treatment for allergy, but if are able to identify the allergen than avoidance of allergen is the best treatment. Most of the times it becomes difficult to identify the allergen, in this situation Skin test is recmonded for identification of allergen and than desensatization by suitable vaccine. Some doctors prefer to inject Hydrocortisone sub mucous over inferior turbinate. Steroid inhalers are also the choice for treatment, as this is also quit effective. I hope your query is answered. Regards.