noun, noun which may take the genitive case particle 'no'
expectoration; removal of phlegm
Medical term for the act of coughing up and spitting out phlegm from the respiratory tract. Often used in compound words like 去痰薬 (expectorant medicine).
この薬には去痰作用があります。
This medicine has an expectorant effect.
去痰を促すために、水分を多く摂ってください。
To promote expectoration, please drink plenty of fluids.