Giardia treatment is not usually necessary when a child has no symptoms of Giardia. However, there are a few exceptions:
If your child does not have diarrhea but is experiencing nausea, fatigue, weight loss, or a poor appetite, you and your healthcare provider may wish to consider Giardia treatment.
If your child attends a daycare center where an outbreak is continuing despite efforts to control it, screening and treating children who have no obvious symptoms may be a good idea.
The same is true if several family members are ill, or if a family member is pregnant and therefore not able to take the most effective anti-Giardia medications.