Several medications may be recommend by your doctor for Giardia treatment, such as:
Tinidazole: A New Giardia Medication
The drug tinidazole (Tindamax®) was recently approved by the U.S. Food and Drug Administration (FDA) for the treatment of giardiasis in adults and children over 3 years of age. Tindamax, which is similar to the drug metronidazole but somewhat more expensive, requires a shorter course of treatment compared with metronidazole.
Alcoholic beverages are to be avoided during therapy and for three days afterward, This drug is not recommended for pregnant women in their first trimester. Like metronidazole, it should be taken with food. Experience with Tindamax outside the United States, where it has been in use for several years, has shown the drug to be at least as effective as metronidazole for the treatment of giardiasis.