“…Despite the controversy of pathogenicity, the symptoms have presupposed treatment if became persistent without other detected pathogens (Mokhtar et al, 2016). Many anti-protozoal drugs either single or in combination with others gave high failure rates (Le Busque et al, 2018). Although metronidazole (MTZ) is a golden blastocystosis treatment, yet with wide range of side effects as carcinogenicity, embryogenicity and teratogenicity, as well as variable inappropriate responses ranged from 0 to100% (Batista et al, 2017).…”