Safer sexual practices may decrease the incidence of giardiasis among the homosexual population. Anti-infective agents such as metronidazole or quinacrine may be used. Furazolidone is generally used to treat children. Drug resistance may be a factor in treatment failures, requiring a change in antibiotic therapy. In pregnancy , treatment should be deferred until after delivery because none of the drugs used to treat the infection are approved for use in pregnancy.
Spontaneous resolution is common, but persistent infections have been reported.
This illustration shows the major organs of the digestive system. Their relative sizes and positioning in the body are also demonstrated.