Respiratory tract infections are commonly seen in children and adults with change in weather conditions, dust, pollution etc.Avoid cold and sour food.Symptoms are cold, cough, nose block, difficulty in breathing.Homoeopathic medicines help to improve the immune system so that the child or the adult does not fall sick so often and the intensity of the symptoms keep reducing.These medicines are available at Body and Mind Homoeopathic Clinic at sec-49, The Sapphire, no 260, Gurgaon.