Take this medication by mouth with food as directed by your doctor, usually every 12 hours for 3 days.

If you are taking the liquid form of this medication, shake the bottle well before each dose. Carefully measure the dose using a special measuring device/spoon. Do not use a household spoon because you may not get the correct dose.

Children 11 years old or younger should take the liquid form of nitazoxanide, but not the tablets. Children's dosage is based on age.

Antibiotics work best when the amount of medicine in your body is kept at a constant level. Take this drug at evenly spaced intervals.

Continue to take this medication for the full time prescribed, even if symptoms disappear after a few doses. Stopping the medication too early may result in a return of the infection.

Tell your doctor if your condition lasts or gets worse.