SIDE EFFECTS: Nausea, vomiting, headache, loss of appetite, weakness, stomach pain, or dizziness may occur the first several days as your body adjusts to the medication. If any of these effects continue or become bothersome, inform your doctor.

Notify your doctor if your condition does not appear to improve or you experience a worsening of symptoms while taking this medication. Use caution operating machinery or participating in activities requiring alertness if this medication makes you feel dizzy. If you notice other effects not listed above, contact your doctor or pharmacist.

PRECAUTIONS: Tell your doctor if you have: kidney disease, blood disorders, any allergies. Caution is advised when using this drug in the elderly because they may be more sensitive to the effects of the drug.

This medication should be used only if clearly needed during pregnancy. Discuss the risks and benefits with your doctor.

It is not known if this medication appears in breast milk. Consult with your doctor before breast-feeding.

DRUG INTERACTIONS: Tell your doctor of any over-the-counter or prescription medication you may take including: cimetidine, probenecid. Do not start or stop any medicine without doctor or pharmacist approval.