Bosutinib; Neratinib/Selected H2 Antagonists 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.
Moderate. These medicines may cause some risk when taken together. 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 cancer medicine to dissolve and be absorbed. H2 antagonists change the pH (acidity) in your GI tract.
What might happen:
The amount of cancer 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 H2 blocker.If your cancer medicine is neratinib, take your cancer medicine at least 10 hours after and 2 hours before your H2 antagonist. If you need to use an antacid while on neratinib, take the antacid at least 3 hours after your neratinib.If you need to use an antacid or H2 antagonist while on bosutinib, separate the dosing by more than 2 hours from your bosutinib dose.If you have questions about how to schedule your medicines, ask your pharmacist.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.Bosulif (bosutinib) US prescribing information. Pfizer Inc. September, 2023.
- 2.Nerlynx (neratinib) US prescribing information. Puma Biotechnology, Inc. June, 2021.
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.