駆く虫ちゅう薬やく

noun

anthelmintic; deworming medicine; vermifuge

Medical term for a drug that expels or destroys parasitic worms. Used in veterinary and human contexts.

• 犬いぬに駆く虫ちゅう薬やくを与あたえる時じ期きを獣じゅう医いに相そう談だんした。

  I consulted the vet about when to give the dog deworming medicine.

noun

insect repellent

Less common usage; more specific terms like 虫除け (むしよけ) are typical for repellents. This sense may appear in older or technical contexts.

• 昔むかしはこのハーブを駆く虫ちゅう薬やくとして使つかっていたらしい。

  Apparently, this herb was used as an insect repellent in the past.