Recent studies have highlighted the potential of plant medicines and have demonstrated that some plant components are very effective inhibitors of G.duodenalis growth,with similar potency to the gold standard drug metronidazole. Our studies demonstrate that T. ferdinadniana fruit extracts also possess significant G. duodenalis growth inhibitory activity. IC50 values of approximately 700 and 140 μg/ml are reported for the methanolic and aqueous fruit extracts,respectively.Also noteworthy was the rapid action of these extracts, with both the methanolic and aqueous extracts blocking 100 % of G.duodenalis growth within 5 min of exposure.Furthermore,all T.ferdianadiana fruit extracts were nontoxic in the Artemia nauplii bioassay, further demonstrating their suitability for chemotherapeutic treatment and prophylactic prevention of giardiasis.