Precautions

Drug information provided by: IBM Micromedex

It is very important that your doctor check you or your child's progress closely to make sure this medicine is working properly. Blood tests may be needed to check for any problems or unwanted effects that may be caused by this medicine.

This medicine may cause a rare, but serious blood problem called methemoglobinemia. The risk may be increased in children younger than 6 months of age, elderly patients, or patients with certain inborn defects. It is more likely to occur in patients receiving too much of the medicine, but can also occur with small amounts. Check with your doctor right away if you or your child has the following symptoms after receiving this medicine: pale, gray, or blue-colored skin, lips, or nails, confusion, headache, lightheadedness, fast heartbeat, or unusual tiredness or weakness.

Do not let your child get any of the medicine in the mouth. This medicine can cause serious side effects, especially in children, if any of it gets into the mouth and is swallowed.

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.