How is gardia treated?

Drug Treatment duration Possible Side Effects Metronidazole 5-7 days Metallic taste; nausea; vomiting; dizziness; headache; disulfiram-like effect; neutropenia Tinidazole Single dose Metallic taste; nausea; vomiting; belching; dizziness; headache; disulfiram-like effect Nitazoxanide 3 days Abdominal pain; diarrhea; vomiting; headache; yellow-green discolouration of urine