sir i am suffering from allergic cought, symptoms are at night fell uncomfortable in brathing, heavy chest, no cough, when i am at GYM then i also feel that my chest become heavy and difficult to breath, when i drink cold water or cold fluidy items chest become conjestion , but at night a sound from chest when i breath, and difficult to breathing, this symptoms from previous 3 to 4 years , please tell me some vaccine that my chest become clean and healty , with regard, Ravi Kant