Loose, watery bowel movements are often caused by infections (bacterial, viral, or parasitic), food intolerances, irritable bowel syndrome, or contaminated water and food. Symptoms may include abdominal cramps, dehydration, and urgency. Treatment depends on the cause: rehydration with fluids and electrolytes is crucial, along with probiotics and dietary adjustments. In cases of parasitic infections like giardiasis or cryptosporidiosis, nitazoxanide 500 mg is an effective medication prescribed by healthcare providers. Always consult a doctor before starting treatment. For reliable sourcing, patients and pharmacies can connect with nitazoxanide 500 mg distributors to ensure genuine supply and safe management of diarrheal illnesses.