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Generic name: phenazopyridine [fen-AY-zoe-PIR-i-deen]
Brand names: include AZO, AZO Max Strength Urinary Pain Relief, Azo Standard, Baridium, and Prodium.
Class of drugs: Other genitourinary tract agents

What is Azo Standard?

Azo-Standard relieves pain in the bladder and urethra.Azo-Standard treats urinary symptoms like pain, burning, or increased urination. The symptoms may be due to an infection or injury. Surgery can also cause these symptoms.Azo-Standard treats urinary symptoms, but it will not treat an infection of the urinary system. Use any antibacterial medication prescribed by your doctor to treat the infection.Azo-Standard can be used in other ways not mentioned in the medication guide.

Side effects of Azo-Standard

If you experience any of the following symptoms of an allergy reaction, seek immediate medical attention: Hives, difficulty breathing, swelling in your lips, face, throat, or tongue

Azo-Standard can cause severe side effects. Azo Standard should be stopped immediately, and you need to consult your doctor if:

  • Little or no urination;
  • Rapid weight gain and swelling
  • Pain in the side, lower back, or confusion
  • Fever or stomach pain. Nausea or vomiting.
  • Blue or purple coloration of the skin

Azo-standard side effects include:

  • Headache;
  • Dizziness;
  • Upset stomach.

There may be other side effects. For medical advice on side effects, call your doctor. Report side effects to the FDA by calling them at 1-800-FDA-1088.

Similar/related drugs

Oxybutynin, Phenazopyridine, Pyridium, Imipramine, Ditropan, Elmiron, and Flavoxate


Azo-Standard should be avoided if you suffer from kidney disease.

Before you take this drug

Azo-Standard should be avoided if the user is allergic or has kidney disease.

Tell your doctor about any of the following to ensure Azo-Standard will be safe for you:

  • Liver disease
  • Diabetes
  • G6pd deficiency, also referred to as glucose-6-phosphate dehydrogenase deficiency, is an inherited genetic enzyme deficiency condition.

FDA pregnancy category A It is unlikely that Azo-Standard will harm an unborn child. If you're pregnant, do not take Azo-Standard unless your doctor has prescribed it.Phenazopyridine does not pass into breastmilk or harm nursing babies. If you're breastfeeding a child, do not take this medication without consulting your doctor.

How to take Azo Standard?

Do not exceed the recommended dosage or duration. Use the recommended dose and do not exceed it.Azo-Standard can be taken after meals.Take Azo-Standard with plenty of fluids.Azo-Standard may darken your urine's color to orange or even red. It is safe and normal. The darkened urine can also stain your underwear permanently.Soft contact lenses can be permanently stained by Azo-Standard. You should avoid wearing them when taking the medicine.Azo-Standard should not be used for more than two days unless you have been told by your doctor to do so.It can produce unusual urine test results. Inform any doctors who treat you that you use Azo-Standard.Keep heat and moisture at a safe, room temperature away.

What happens if I miss the dose?

As soon as possible, take the missed dose. Whenever your next dose is due to arrive soon, disregard the missed one and take only what's due.You should not take more medicine to compensate for a missed dose.

What happens if I overdose?

Call 1-800-222-1222 for poison help or seek immediate medical attention.

Avoid this

Avoid using this medicine while wearing soft contact lenses. The Azo-Standard medication can permanently discolor soft lenses.

Interaction with other drug

The interaction between phenazopyridine and other drugs, such as prescription medicines and herbal remedies, Inform your healthcare providers of all the medicines that you are currently taking and those you plan to start using.