Loose watery bowel movements are usually caused by infections (viral, bacterial, or parasitic), food intolerances, contaminated water, irritable bowel syndrome, or side effects of medications. Common symptoms include abdominal cramps, dehydration, and fatigue. Treatment depends on the cause: staying hydrated with oral rehydration solutions, eating a bland diet, and taking probiotics may help restore gut balance. In case of parasitic infections like giardiasis or amoebiasis, specific medicines such as Nizonide 500 mg (nitazoxanide) are prescribed. Always consult a doctor before taking medication. If you are looking for genuine medicines, find a trusted nizonide 500 mg supplier for safe treatment.