Neratinib Medication Profile

Summary or Key Points

Neratinib is an oral medication used for the extended adjuvant treatment of adult patients with early-stage HER2-overexpressed/amplified breast cancer. This medication plays a crucial role in preventing the recurrence of this specific type of breast cancer. Always consult your healthcare provider or our telemedicine service for specific questions about your treatment plan.

Names of Medication

US Brand Name: Nerlynx (Neratinib)

A medication’s ‘generic name’ is the standard name for the active ingredient of the drug, without branding. This is the name you’ll find in parenthesis (Neratinib).

Pharmacologic Category

Neratinib belongs to a class of medications known as tyrosine kinase inhibitors, specifically targeting HER2 (human epidermal growth factor receptor 2).

Dosing

Neratinib is used for the extended adjuvant treatment of adult patients with early-stage HER2-overexpressed/amplified breast cancer, to follow adjuvant trastuzumab-based therapy. The standard dose is 240 mg (six 40 mg tablets) taken orally once daily with food, continuously for one year. Always consult your healthcare provider before adjusting your dose.

Dosage Forms and Strengths

Neratinib is available in a 40 mg tablet form.

Administration Instructions

Take Neratinib orally once daily with food at approximately the same time each day. Do not chew, crush, or split the tablets. If you miss a dose, take it as soon as you remember unless it is within 12 hours of the next dose. Do not take two doses at the same time to make up for a missed dose.

Adverse Reactions and Side Effects

Common side effects of Neratinib include diarrhea, nausea, abdominal pain, fatigue, vomiting, rash, stomatitis, decreased appetite, muscle spasms, dyspepsia, nail disorder, dry skin, abdominal distention, weight loss, and urinary tract infection.

Contraindications

A contraindication is a specific situation in which a drug should not be used because it may be harmful to the patient. Neratinib is contraindicated in patients with known severe hypersensitivity to it or any of its components. Severe hypersensitivity reactions could include anaphylaxis, a potentially life-threatening reaction that requires immediate medical attention.

Drug to Drug Interactions

Medications that may interact with Neratinib include:

• Strong or moderate CYP3A4 inhibitors such as Ketoconazole (Nizoral), Itraconazole (Sporanox), and Verapamil (Isoptin, Calan, Verelan)
• Strong or moderate CYP3A4 inducers such as Carbamazepine (Tegretol), Phenytoin (Dilantin), and Rifampin (Rifadin)
• Gastric acid reducing agents like Omeprazole (Prilosec), Pantoprazole (Protonix), and Ranitidine (Zantac)
• P-glycoprotein (P-gp) substrates such as Digoxin (Lanoxin)

Always consult your healthcare provider before starting or stopping any medication.

Neratinib in Pregnancy

Based on findings from animal studies and its mechanism of action, Neratinib can cause fetal harm when administered to a pregnant woman. It is recommended to avoid pregnancy while taking this medication.

Neratinib while Breastfeeding

It is not known whether Neratinib is present in human milk. Due to the potential for serious adverse reactions in a breastfed child, breastfeeding is not recommended while taking Neratinib and for at least one month after the last dose.

Estimated Cost of Medication

The estimated cost of a 30-day supply of Neratinib without insurance, using a GoodRx coupon, is approximately $11,000. However, prices can vary significantly depending on your location and pharmacy, so it’s essential to check prices in your area.

Possible Alternatives

For breast cancer treatment, alternative treatments may include other HER2 inhibitors like Trastuzumab (Herceptin), Lapatinib (Tykerb), or Pertuzumab (Perjeta), chemotherapies, hormone therapies, or radiation. Lifestyle changes such as maintaining a healthy weight, regular exercise, and a balanced diet may also help manage the disease. Always consult your healthcare provider before making any changes to your treatment plan. Our telemedicine service is also available for immediate consultation.

Recent Updates on Neratinib Research

Recent studies have indicated that Neratinib may also be effective in treating other types of cancer that overexpress HER2, such as gastric and non-small cell lung cancer. Additional research is ongoing to determine its effectiveness in these areas and other potential applications. Stay tuned for more information as research progresses.

Brief Legal Disclaimer: This article is for informational purposes only and not intended as medical advice. Always consult a healthcare professional for diagnosis and treatment. Reliance on the information provided here is at your own risk.