Drug information provided by: Merative, Micromedex®

Your doctor will check your or your child's progress closely while you are receiving this medicine to make sure if the medicine is working properly. Blood tests will also be needed to check for unwanted effects.

Severe hypotension (low blood pressure) may occur with this medicine. It could be life-threatening and requires immediate medical attention. Check with your doctor right away if you have blurred vision, confusion, dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly, sweating, or unusual tiredness or weakness.

This medicine may cause a rare, but serious blood problem called methemoglobinemia. Newborn babies and infants may be more likely to have this serious side effect. Check with your doctor right away if you or your child has bluish-colored lips, fingernails, or palms, dark urine, difficulty breathing, fever, headache, pale skin, rapid heart rate, sore throat, trouble breathing, unusual bleeding or bruising, or unusual tiredness or weakness.

Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.