What are the treatment options for giardiasis?
Children and adults who have giardia infection but no symptoms usually do not need treatment unless they are likely to spread the parasites. When signs and symptoms are severe or the infection persists, giardiasis can usually be successfully treated with antibiotics, such as metronidazole or tinidazole. They are equally effective, but tinidazole requires a shorter course of treatment. Both can cause side effects, such as a metallic taste, nausea and vomiting. Avoid drinking alcohol during treatment. Pregnant women should not use these drugs during the first trimester, because they may lead to birth defects. Pregnant women may be treated with the less toxic and less effective drug paramomycin. Metronidazole may be considered only in extreme cases where signs and symptoms are severe. If an individual is diagnosed with giardiasis, other members of the household may be advised to have treatment with metronidazole. This may be recommended as a precautionary measure in case they have also be
