A breathing assistance device includes a patient breathing tube having a leading end in fluid communication with a face mask. A source of air under pressure is connected to a first port formed integrally with a valve in fluid communication with the breathing tube and a nebulizer is connected to a second port formed integrally with the valve. A compartment holding a medicinal compound in liquid fluid form is connected to the nebulizer. A valve actuator has an open position where gaseous fluid and aerosolized medicine from the nebulizer flow to the patient through the breathing tube and a closed position where only gaseous fluid without medication is delivered. Medication can therefore be administered to or withheld from the patient by manipulating the valve actuator. The valve construction enables the patient to exhale against pressure slightly above atmospheric pressure.
