J&J Medical Connect
INLEXZO™

(gemcitabine intravesical system)

This information is intended for US patients and caregivers to access current scientific information about J&J Innovative Medicine products. It is prepared by Medical Information and is not intended to promote the use of our products, nor to provide medical advice.

INLEXZO™ (gemcitabine intravesical system)

Patient Medical Information

What are the Possible Side Effects of INLEXZO?

Last Updated: 09/10/2025

summary

The following content from the INLEXZO PATIENT INFORMATION section may be helpful to address your question:  

What are the possible side effects of INLEXZO?

The most common side effects of INLEXZO include1:

  • frequent need to pass urine more often than usual
  • urinary tract infection
  • pain or burning sensation when passing urine
  • urgent need to pass urine
  • decreased hemoglobin
  • increased lipase
  • pain the urinary tract (felt in the lower stomach area or lower back)
  • decreased lymphocytes
  • blood in urine
  • increased creatinine
  • increased potassium
  • increased aspartate aminotransferase
  • decrease sodium
  • bladder irritation
  • increased alanine transaminase

INLEXZO may cause fertility problems in males, which may affect your ability to have children. It is unknown if these side effects of fertility are reversible. Talk to your healthcare provider if this is a problem for you.1 

Tell your healthcare provider if you have any side effect that bothers you or does not go away.1 

These are not all the possible side effects of INLEXZO.1 

Call your healthcare provider for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.1 

ADDITIONAL INFORMATION

This information is provided ONLY in response to your request and is not intended as medical advice, to promote the use of our product, or suggest using it in any manner other than as described in the PRESCRIBING INFORMATION. All decisions regarding your medical treatment should be made with your healthcare professional(s). Please contact your healthcare professional(s) to discuss the information in this response.

Please refer to the attached full PRESCRIBING INFORMATION and the PATIENT INFORMATION for INLEXZO.1

 

References

1 INLEXZO (gemcitabine intravesical system) [Prescribing Information]. Horsham, PA: Janssen Biotech, Inc; https://www.janssenlabels.com/package-insert/product-monograph/prescribing-information/INLEXZO-pi.pdf