Nitazoxanide, an antiparasitic medication, is effective against certain protozoa but is not typically used as a first-line treatment for worm infections like roundworms, tapeworms, or pinworms. For these conditions, drugs such as albendazole or mebendazole are preferred. Nitazoxanide is more commonly prescribed for infections like cryptosporidiosis or giardiasis. The Nitazoxanide 500 mg price varies depending on the brand, location, and pharmacy, but it is generally affordable. If you suspect a worm infection, consult a healthcare professional for an accurate diagnosis and appropriate treatment plan. Self-medication is not recommended due to varying efficacy across parasitic infections.