Anthelminthic activity refers to the ability of a substance to kill or remove parasitic worms, also known as helminths, from the body. Anthelminthic drugs are used to treat various types of worm infections, such as roundworm, tapeworm, and hookworm infections.The mode of action of anthelminthic drugs varies depending on the type of drug and the type of worm being targeted. Some drugs work by paralyzing the worms, making it easier for the body to expel them. Others work by disrupting the metabolism of the worms, leading to their death.Anthelminthic drugs are available in different forms, including tablets, capsules, suspensions, and injections. Some of the commonly used anthelminthic drugs include mebendazole, albendazole, ivermectin, and praziquantel.