Mouthwash used to rinse and disinfect the mouth and throat. Commonly a household over-the-counter product; often called うがい薬 in everyday speech.
風邪の季節にはうがい薬を使う人が増える。
During cold season, more people use mouthwash.
子どもには刺激の弱いうがい薬を選んでください。
Please choose a milder mouthwash for children.
寝る前にうがい薬でうがいをすると喉の調子が良くなる気がする。
I feel that rinsing with mouthwash before bed helps my throat.