Giardia: Giardiasis refers to a syndrome of diarrhea, excess gas, and abdominal cramping. It is caused by Giardia lamblia, a water-borne parasite that is worldwide in distribution. The symptoms ...

Nitroimidazole derivatives act by causing DNA damage, with loss of the helical structure, impaired template function and strand breakage. Metronidazole is commonly given as 2 g single dose on ...