Pyrvinium pamoate is primarily used as an anthelmintic medication to treat parasitic worm infections, particularly pinworm (Enterobius vermicularis) infections. It works by interfering with the glucose uptake of the parasites, leading to their eventual death. The compound is administered orally, often in a single dose, and is known for its effectiveness in eradicating pinworm infestations with minimal side effects. Additionally, recent research has explored its potential in cancer therapy due to its ability to inhibit the Wnt signaling pathway, which is involved in cell proliferation and survival. This has led to investigations into its use as an adjunct treatment in certain types of cancers, though this application is still in the experimental stage.