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Uretron Side Effects

Generic Name: hyoscyamine / methenamine / methylene blue / phenyl salicylate

Note: This document contains side effect information about hyoscyamine / methenamine / methylene blue / phenyl salicylate. Some of the dosage forms listed on this page may not apply to the brand name Uretron.

Applies to hyoscyamine / methenamine / methylene blue / phenyl salicylate: oral tablet, oral tablet enteric coated

Along with its needed effects, hyoscyamine/methenamine/methylene blue/phenyl salicylate may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor as soon as possible if any of the following side effects occur while taking hyoscyamine / methenamine / methylene blue / phenyl salicylate:

Less common or rare Symptoms of overdose
  • Blood in urine and/or stools
  • diarrhea
  • dizziness
  • drowsiness (severe)
  • fast heartbeat
  • flushing or redness of face
  • headache (severe or continuing)
  • lower back pain
  • pain or burning while urinating
  • ringing or buzzing in the ears
  • shortness of breath or troubled breathing
  • sweating
  • unusual tiredness or weakness

Some side effects of hyoscyamine / methenamine / methylene blue / phenyl salicylate may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Less common
  • Difficult urination (more common with large doses taken over a prolonged period of time)
  • dryness of mouth, nose, or throat
  • nausea or vomiting
  • stomach upset or pain (more common with large doses taken over a prolonged period of time)

This medicine may cause your urine and/or stools to turn blue or blue-green. This is to be expected while you are taking this medicine.

Some side effects of Uretron may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

More about Uretron (hyoscyamine / methenamine / methylene blue / phenyl salicylate)

Consumer resources

Other brands: Urised, Prosed EC, UTICAP, Utira

Professional resources

Related treatment guides

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