This medication may cause redness, stinging, or burning of the skin. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Rarely, serious side effects have occurred with other sulfa antibiotics that are taken by mouth. Although this effect is unlikely with sulfa medications that are applied to the skin, tell your doctor right away if any of these rare but very serious side effects occur: joint pain, butterfly-shaped rash around the nose and cheeks, unexplained fever, mouth sores, signs of infection (e.g., fever, persistent sore throat), unusual weakness/tiredness, unusual bleeding/bruising, dark urine, yellowing eyes/skin.
Use of this medication for prolonged or repeated periods may result in a fungal skin infection. Do not use this medication for longer than prescribed. Contact your doctor if you notice new or worsening symptoms.
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.