“…They were first described as powerful antihelmintic agents (Bardon et al, 1995;Nontasut et al, 1997;Nakaya et al, 1998;Legesse et al, 2002Legesse et al, , 2004Mentz et al, 2004) and subsequently it was demonstrated that some benzimidazoles also presented a high efficacy against many parasitic protozoa (Edlind et al, 1990;Cedillo-Rivera & Munoz, 1992;Chavez et al, 1992;Oxberry et al, 1994;Liu & Weller, 1996;Skinner-Adams et al, 1997;Valdez et al, 2002), including some trichomonads (Juliano et al, 1985;Al-Waili, 1987;Sears & O'Hare, 1988). They were first described as powerful antihelmintic agents (Bardon et al, 1995;Nontasut et al, 1997;Nakaya et al, 1998;Legesse et al, 2002Legesse et al, , 2004Mentz et al, 2004) and subsequently it was demonstrated that some benzimidazoles also presented a high efficacy against many parasitic protozoa (Edlind et al, 1990;Cedillo-Rivera & Munoz, 1992;Chavez et al, 1992;Oxberry et al, 1994;Liu & Weller, 1996;Skinner-Adams et al, 1997;Valdez et al, 2002), including some trichomonads (Juliano et al, 1985;Al-Waili, 1987;Sears & O'Hare, 1988).…”