Doxovent 400 MG Tablet is used for Asthma, Chronic Obstructive Pulmonary Disorder (Copd) etc. Know Doxovent 400 MG Tablet uses, side-effects, composition, substitutes, drug interactions, precautions, dosage, warnings only on Lybrate.com Doxovent 400 Tablet is used to manage chronic obstructive pulmonary disease (COPD) and other respiratory conditions. It helps to improve breathing by relaxing and opening airways. It is used to treat lung disorders like asthma and chronic obstructive pulmonary disease (COPD). Doxovent tablet works by relaxing the smooth muscles of the airways, widening them and making it easier to breathe. Doxovent Tablet is used to treat and prevent symptoms of asthma and chronic obstructive pulmonary disorder (a lung disorder in which flow of air to the lung is blocked).