Neratinib with Magnesium Hydroxide Interaction Details


Brand Names Associated with Neratinib

  • Neratinib
  • Nerlynx®

Brand Names Associated with Magnesium Hydroxide

  • Almacone® (containing Aluminum Hydroxide, Magnesium Hydroxide, Simethicone)
  • Alumox® (containing Aluminum Hydroxide, Magnesium Hydroxide, Simethicone)
  • ConRX® AR (containing Aluminum Hydroxide, Magnesium Hydroxide)
  • Duo Fusion® (containing Calcium Carbonate, Famotidine, Magnesium Hydroxide)
  • Magnesium Hydroxide
  • Milk of Magnesia®
  • Pedia-Lax®

Medical Content Editor
Last updated Dec 29, 2023


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Interaction Effect

Decreased neratinib exposure


Interaction Summary

Coadministration of neratinib with agents that increase the gastric pH, such as antacids, may result in a decrease in neratinib plasma concentration and AUC resulting in reduced efficacy. Separate neratinib dosing by 3 hours after antacids.


Severity

Major


Onset

Unspecified


Evidence

Theoretical


How To Manage Interaction

Coadministration of neratinib with agents that increase the gastric pH, such as antacids, may result in a decrease in neratinib plasma concentration and AUC resulting in reduced efficacy. Separate neratinib dosing by 3 hours after antacids.


Mechanism Of Interaction

Decreased neratinib absorption due to increased gastric pH

Neratinib Overview

  • Neratinib is used to treat a certain type of hormone receptor-positive breast cancer (breast cancer that depends on hormones such as estrogen to grow) in adults after treatment with trastuzumab (Herceptin) and other medications. Neratinib is used along with capecitabine (Xeloda) to treat a certain type of advanced hormone receptor-positive breast cancer or breast cancer that has spread to other parts of the body after treatment with at least two other medications. Neratinib is in a class of medications called kinase inhibitors. It works by blocking the action of an abnormal protein that signals cancer cells to multiply. This helps slow or stop the spread of cancer cells.

See More information Regarding Neratinib

Magnesium Hydroxide Overview

  • Magnesium hydroxide is used to treat occasional constipation in children and adults on a short-term basis. Magnesium hydroxide is in a class of medications called saline laxatives. It works by causing water to be retained with the stool. This increases the number of bowel movements and softens the stool so it is easier to pass.

See More information Regarding Magnesium Hydroxide

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Definitions

Severity Categories

Contraindicated

These drugs, generally, should not be used together simultaneously due to the high risk of severe adverse effects. Combining these medications can lead to dangerous health outcomes and should be strictly avoided unless otherwise instructed by your provider.


Major

This interaction could result in very serious and potentially life-threatening consequences. If you are taking this drug combination, it is very important to be under close medical supervision to minimize severe side effects and ensure your safety. It may be necessary to change a medication or dosage to prevent harm.


Moderate

This interaction has the potential to worsen your medical condition or alter the effectiveness of your treatment. It's important that you are monitored closely and you potentially may need to make adjustments in your treatment plan or drug dosage to maintain optimal health.


Minor

While this interaction is unlikely to cause significant problems, it could intensify side effects or reduce the effectiveness of one or both medications. Monitoring for changes in symptoms and your condition is recommended, and adjustments may be made if needed to manage any increased or more pronounced side effects.


Onset

Rapid: Onset of drug interaction typically occurs within 24 hours of co-administration.

Delayed: Onset of drug interaction typically occurs more than 24 hours after co-administration.


Evidence

Level of documentation of the interaction.

Established: The interaction is documented and substantiated in peer-reviewed medical literature.

Theoretical: This interaction is not fully supported by current medical evidence or well-documented sources, but it is based on known drug mechanisms, drug effects, and other relevant information.


How To Manage The Interaction

Provides a detailed discussion on how patients and clinicians can approach the identified drug interaction as well as offers guidance on what to expect and strategies to potentially mitigate the effects of the interaction. This may include recommendations on adjusting medication dosages, altering the timing of drug administration, or closely monitoring for specific symptoms.

It's important to note that all medical situations are unique, and management approaches should be tailored to individual circumstances. Patients should always consult their healthcare provider for personalized advice and guidance on managing drug interactions effectively.


Mechanism Of Interaction

The theorized or clinically determined reason (i.e., mechanism) why the drug-drug interaction occurs.


Disclaimer: The information provided on this page is for informational purposes only and should not be considered medical advice. Always consult with a qualified healthcare professional regarding your specific circumstances and medical conditions.

Where Does Our Information Come From?

Information for our drug interactions is compiled from several drug compendia, including:

The prescribing information for each drug, as published on DailyMED, is also used. 

Individual drug-drug interaction detail pages contain references specific to that interaction. You can click on the reference number within brackets '[]' to see what reference was utilized.

The information posted is fact-checked by HelloPharmacist clinicians and reviewed quarterly.