Phenazopyridine Side Effects

Some of the common side effects of phenazopyridine are listed below. Tell your doctor if these adverse effects are severe or do not go away after a few days.

• Red, orange, or brown urine color (this is harmless and will disappear in a few days)
• Dizziness
• Headache
• Upset stomach

Some of the side effects of phenazopyridine can be more serious. Contact your doctor right away or seek emergency medical help if you experience symptoms such as:

• Yellowing of the skin or eyes
• Fever
• Confusion
• Skin rash
• Bluish purple skin discoloration
• Shortness of breath
• Swelling of the arms, hands, legs, ankles, or feet
• Sudden decrease in the amount of urine (little or no urinating)

The above list may not include all the potential side effects of phenazopyridine. Call your doctor for medical advice about side effects if you experience severe or unusual symptoms. You can also report unusual side effects to the Food and Drug Administration at 1-800-FDA-1088.

Phenazopyridine overdose: In case of a known or suspected overdose, call your doctor, the local poison control center, or the provincial poison control center immediately. You can also call the poison control helpline at 1-800-222-1222. If a person can’t be awakened, has had a seizure, or has trouble breathing, call 911. 

Source: FDA