Nizonide 500mg tablets are effective in treating worm infections, particularly those caused by  Giardia lamblia  and  Cryptosporidium parvum . The active ingredient, Nitazoxanide, works by interfering with the energy metabolism of parasites, leading to their elimination.  nizonide 500mg  is commonly prescribed for infections like giardiasis and cryptosporidiosis, helping to relieve symptoms such as diarrhea and abdominal discomfort. It is essential to take Nizonide 500mg as directed by a healthcare professional for optimal results. While generally well-tolerated, some users may experience mild side effects. Always consult your doctor before using Nizonide 500mg for worm infections to ensure proper diagnosis and treatment.