Nizonide 500mg tablets are commonly prescribed for treating loose, watery bowel movements caused by infections such as giardiasis and cryptosporidiosis. These conditions are typically due to parasitic organisms that affect the gastrointestinal tract. The active ingredient, nitazoxanide, works by inhibiting the energy metabolism of these parasites, effectively stopping their growth and alleviating symptoms like diarrhea. The nizonide 500mg is taken twice daily for a short duration, as directed by a healthcare provider. It is well-tolerated, with minimal side effects, making it a reliable choice for managing parasitic infections causing persistent or acute diarrhea. Always consult a doctor before use.