A 17-year-old girl with hypoxic encephalopathy was hospitalized over four times in a year because of recurrent aspiration pneumonia (AP). She had dysphagia and reduced cough reflex as sequelae of brain damage. To prevent aspiration, a gastric tube was placed for feeding, but it did not reduce the frequency of AP because the gastroesophageal reflux caused backflow. However, after the Kampo medicine bukuryoingohangekobokuto (BRIHK) was added to the prescriptions, her sputum and gastroesophageal reflux was remarkably reduced. BRIHK is a Kampo medicine that confers multiple benefits such as improving swallowing and cough reflexes, reducing sputum, and improving gastric emptying. Subsequently, the frequency of sputum suction reduced from every 15 min to 30 min, thus reducing the burden on her mother. As a result, she has never been hospitalized for AP in the 7 years after treatment. Overall, BRIHK may be a treatment of choice for similar patients.