Broncho is used to prevent respiratory tract infections and reduce the possibility of viral and bacterial infections, acute and chronic pneumonia, asthma, chronic obstructive pulmonary disease, antibiotic-resistant bacterial infections, and bacterial complications resulting from viral respiratory infections. Respiratory tract infections may recur, become chronic, or become resistant to antibiotics. In such cases, the doctor may resort to prescribing some medications that work to enhance the body's immunity and increase its ability to fight infection. Among these medications that stimulate the immune system is Broncho, for example.