Take this medication by mouth with or without food as directed by your doctor, usually every 12 hours. If stomach upset occurs, you may take it with food or milk.

For the best effect, take this antibiotic at evenly spaced times. To help you remember, take this medication at the same time(s) every day.

The dosage and length of treatment are based on your medical condition and response to treatment. In children, the dosage may also be based on weight.

If you are using this medication to treat an infection, continue to take this medication until the full prescribed amount is finished, even if symptoms disappear after a few days. Stopping the medication too early may result in a return of the infection. Tell your doctor if your condition lasts or gets worse.

If you are taking this medication to prevent certain bacterial infections, take it exactly as directed by your doctor. Do not stop taking the medication without your doctor's approval. Tell your doctor if you develop signs of infection such as fever or night sweats.