Zejula (Niraparib): A Comprehensive Guide for Ovarian Cancer Patients

Understanding Zejula (Niraparib) for Ovarian Cancer Treatment

Zejula, with the active ingredient niraparib, is a vital prescription medication used in the management of ovarian cancer. It is available in oral forms, either as a capsule or a tablet, and is prescribed for adult patients diagnosed with epithelial cancer of the ovaries, fallopian tubes, or the peritoneum. These cancers, though originating in different locations, share similarities and are treated with the same approach. Epithelial refers to the type of tissue that forms the outer layer of organs and body cavities.

How Zejula Works: A PARP Inhibitor

Zejula belongs to a class of drugs known as poly ADP-ribose polymerase (PARP) inhibitors. Its primary role is as a maintenance treatment, meaning it is administered after the cancer has shown a positive response to platinum-based chemotherapy. This approach aims to keep the cancer in remission for as long as possible and prevent its recurrence.

When is Zejula Prescribed?

Zejula is typically prescribed for advanced ovarian cancer or for recurrent ovarian cancer in adults who have a BRCA gene mutation. The decision to prescribe Zejula is made by a qualified oncologist after careful evaluation of the patient's specific cancer type, stage, and genetic profile.

Dosage and Administration

The dosage of Zejula is determined by your doctor and depends on several factors, including your body weight and platelet count. Zejula is available in strengths of 100 mg (capsule and tablet), 200 mg (tablet), and 300 mg (tablet). The dosage is measured in milligrams (mg), body weight in kilograms (kg), and platelet counts in billions of platelets per liter of blood (× 10⁹/L).

Maintenance Treatment for Advanced Ovarian Cancer:

For maintenance treatment of advanced ovarian cancer, the dosage is carefully adjusted based on body weight and platelet count. Your doctor will provide a specific dosage regimen tailored to your needs.

Maintenance Treatment for Recurrent Ovarian Cancer with BRCA Gene Mutation:

If you have recurrent ovarian cancer and a BRCA gene mutation, your doctor will likely recommend a dosage of 300 mg of Zejula once per day. In this case, maintenance treatment with Zejula usually begins within 8 weeks of your last platinum-based chemotherapy treatment.

For other maintenance treatments of advanced ovarian cancer, Zejula therapy typically commences within 12 weeks of your most recent platinum-based chemotherapy.

Potential Side Effects of Zejula

Like all medications, Zejula can cause side effects, ranging from mild to serious. It is crucial to discuss any potential side effects with your doctor or pharmacist. They can provide more information and suggest ways to manage them.

Common Mild Side Effects:

Some of the more frequently reported mild side effects include:

• Digestive issues such as nausea, vomiting, diarrhea, constipation, and abdominal pain.
• Fatigue and tiredness.
• Changes in taste.
• Shortness of breath.
• Decreased appetite.
• Headache.
• Insomnia.
• Dry mouth.
• Rash.

These mild side effects often subside within a few days to a couple of weeks. However, if they become persistent or bothersome, consult your doctor.

Serious Side Effects:

While less common, Zejula can cause serious side effects. These require immediate medical attention:

• Myelodysplastic Syndrome (MDS) and Acute Myeloid Leukemia (AML): These are serious blood marrow cancers.
• Aplastic Anemia: A condition where the bone marrow doesn't produce enough new blood cells.
• Thrombocytopenia: A low platelet count, which can lead to increased bleeding.
• Anemia: A low red blood cell count, causing fatigue and weakness.
• Neutropenia: A low white blood cell count, increasing the risk of infection.
• Hypertension: High blood pressure.
• Allergic Reactions: Symptoms may include rash, itching, swelling, dizziness, or trouble breathing.

If you experience any signs of serious side effects, contact your doctor immediately. If you believe you are having a medical emergency, call 911 or your local emergency number without delay.

Important Precautions and Interactions

It is essential to inform your doctor about all other medications, supplements, and herbal products you are taking, as Zejula can interact with them. Your doctor will assess these potential interactions and adjust your treatment plan accordingly.

What to Do in Case of Overdose

If you suspect you have taken too much Zejula, contact your doctor immediately. You can also reach out to America’s Poison Centers at 800-222-1222 or use their online resources. For severe symptoms, seek emergency medical help by calling 911 or going to the nearest emergency room.

When to Consult a Doctor

It is crucial to maintain regular follow-up appointments with your oncologist while on Zejula. Contact your doctor promptly if you experience:

• Any new or worsening symptoms.
• Signs of infection, such as fever or chills.
• Unusual bleeding or bruising.
• Severe fatigue or weakness.
• Any adverse reaction to the medication.

Zejula is a powerful medication that plays a significant role in managing ovarian cancer. Understanding its uses, dosage, potential side effects, and precautions is vital for patients undergoing treatment. Always rely on your healthcare provider for personalized medical advice and management.