Nizonide 500 mg is an antiparasitic medication containing Nitazoxanide as its active ingredient. It is commonly prescribed to treat infections caused by protozoa, helminths, and certain anaerobic bacteria, such as Giardia and Cryptosporidium, which can cause diarrhea in children and adults. Nizonide works by inhibiting the growth of parasites in the digestive tract, helping to alleviate symptoms like abdominal pain, nausea, and diarrhea.

Typically, the dosage is 500 mg twice daily for a duration prescribed by a healthcare provider, based on the condition being treated. Side effects can include headache, nausea, vomiting, and dizziness. Always follow your doctor’s instructions and complete the full course of the medication to avoid recurrence of the infection.