Selected Kinase Inhibitors/Vonoprazan-Clarithromycin 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.
Serious. These medicines may interact and cause very harmful effects. Contact your healthcare professional (e.g. doctor or pharmacist) for more information.
How the interaction occurs:
The pH of your GI tract needs to be acidic for your medicine to dissolve and be absorbed. Proton pump inhibitors change the pH (acidity) in your GI tract.
What might happen:
The amount of medicine in your blood may decrease and it may not work as well.
What you should do about this interaction:
Let your healthcare professionals (e.g. doctor or pharmacist) know that you are taking these medicines together. Your doctor may instruct you to take antacids instead of your proton pump inhibitor.If you need to use an antacid while on gefitinib, take the antacid at least 6 hours before or after your gefitinib.If you need to use an antacid while on dacomitinib, separate the doses of the antacid and your cancer medicine by several hours.If you have questions about how to schedule your medicines, ask your pharmacist.
- 1.Vizimpro (dacomitinib) US prescribing information. Pfizer, Inc. September, 2018.
- 2.Iressa (gefitinib) US prescribing information. AstraZeneca March 6, 2012.
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.