Dewormers must be taken once every 1 to 2 years as prescribed by the doctor. Dewormers are drugs that can kill or expel intestinal parasites from the body. Commonly used dewormers include mebendazole, levamisole or albendazole, etc.; they are mainly used for the treatment of diseases caused by intestinal parasites (e.g. roundworms, tapeworms, hookworms or pinworms, etc.). Dewormers are recommended to be taken under doctor’s guidance after a clear diagnosis, as they can produce side effects such as dizziness, nausea, vomiting and even kidney damage; in addition, they are recommended to be taken on an empty stomach to ensure their concentration and efficacy in the intestinal tract, and it is recommended to consume more crude fiber food after taking them in order to promote peristalsis, so as to facilitate the worms to be excreted with the feces.