For the Consumer. Applies to phenazopyridine: oral tablet. Along with its needed effects, phenazopyridine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. Pyridium (Phenazopyridine HCl Tablets, USP) contains the following inactive ingredients: carnauba wax, croscarmellose sodium, hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, povidone and pregelatinized starch. You may report side effects to FDA at 1-800-FDA-1088.In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345. You may report side effects to Health Canada at 1-866-234-2345. Azo-Standard (Phenazopyridine) is a pain reliever that affects the lower part of your urinary tract (bladder and urethra). Azo-Standard (Phenazopyridine) - Side Effects, Dosage, Interactions. Phenazopyridine is a prescription medication used to relieve urinary tract pain, burning, irritation, and discomfort, as well as urgent and frequent urination caused by urinary tract infections, surgery, injury, or examination procedures. You may report side effects to FDA at 1-800-FDA-1088. What is the most important information I should know about phenazopyridine? You should not use phenazopyridine if you have kidney disease. Find patient medical information for Phenazopyridine Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. What are some other side effects of Phenazopyridine? All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away. Pharmacists also advise patients not to drink alcohol with medicines as alcohol intensifies drowsiness side-effects. Please check for these effects on your body when using Phenazopyridine Hcl. Always consult with your doctor for recommendations specific to your body and health conditions. Phenazopyridine is a medication which, when excreted into the urine, has a local analgesic effect. It is often used to help with the pain , irritation , or urgency caused by urinary tract infections , surgery , or injury to the urinary tract.