Irinotecan/UGT1A1 Inhibitors Interactions
This information is generalized and not intended as specific medical advice. Consult your healthcare professional before taking or discontinuing any drug or commencing any course of treatment.
Medical warning:
Very Serious. These medicines may interact and cause very harmful effects and are usually not taken together. Contact your healthcare professional (e.g. doctor or pharmacist) for more information.
How the interaction occurs:
Your other medicine may slow down how quickly your body processes irinotecan.
What might happen:
The amount of irinotecan in your blood may increase. This may cause you to have more side effects from your medicine. Possible side effects include but are not limited to diarrhea, difficulty sleeping, dizziness, fever, rash, or vomiting.
What you should do about this interaction:
Contact your healthcare professionals (e.g. doctor or pharmacist) right away about using these medicines together. Your doctor may want to change the dose of your medicine or your medicine. Let your doctor know if you have any side effects from your irinotecan.Your healthcare professionals may already be aware of this interaction and may be monitoring you for it. Do not start, stop, or change the dosage of any medicine before checking with them first.
- 1.Camptosar (irinotecan hydrochloride) US prescribing information. Pharmacia & Upjohn Company January, 2020.
- 2.Reyataz (atazanavir sulfate) Australian product information. Bristol-Myers Squibb Pharmaceuticals October 25, 2023.
- 3.Reyataz (atazanavir sulfate) US prescribing information. Bristol-Myers Squibb Company November, 2023.
- 4.Phansalkar S, Desai AA, Bell D, Yoshida E, Doole J, Czochanski M, Middleton B, Bates DW. High-priority drug-drug interactions for use in electronic health records. J Am Med Inform Assoc 2012 Sep-Oct; 19(5):735-43.
Selected from data included with permission and copyrighted by First Databank, Inc. This copyrighted material has been downloaded from a licensed data provider and is not for distribution, except as may be authorized by the applicable terms of use.
CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.