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Halaven

(eribulin)

How does this medication work? What will it do for me?

Eribulin belongs to the class of medications called antineoplastics. It is used to treat breast cancer that has metastasized (spread to other parts of the body), and at least two other types of chemotherapy have failed after the cancer has spread.

Eribulin kills cancer cells by interfering with reproduction of the cancer cells.

This medication may be available under multiple brand names and/or in several different forms. Any specific brand name of this medication may not be available in all of the forms or approved for all of the conditions discussed here. As well, some forms of this medication may not be used for all of the conditions discussed here.

Your doctor may have suggested this medication for conditions other than those listed in these drug information articles. If you have not discussed this with your doctor or are not sure why you are taking this medication, speak to your doctor. Do not stop taking this medication without consulting your doctor.

Do not give this medication to anyone else, even if they have the same symptoms as you do. It can be harmful for people to take this medication if their doctor has not prescribed it.

How should I use this medication?

Eribulin is injected intravenously (into a vein) over 2 to 5 minutes on day 1 and day 8 of a 21-day cycle.

The recommended adult dose of eribulin is based on body size and is generally calculated by your doctor as 1.4 milligrams per square metre of body surface area. Body surface area is a measurement that considers height and weight to determine the total surface area of the body.

Many things can affect the dose of medication that a person needs, such as body weight, other medical conditions, and other medications. If your doctor has recommended a dose different from the ones listed here, do not change the way that you are taking the medication without consulting your doctor.

When given into a vein, it is usually injected through a site on your skin specially prepared for this purpose. Very careful handling of this medication is required. It is always administered in a hospital or similar setting with access to sterile equipment for preparation.

It is important this medication be given exactly as recommended by your doctor. If you miss an appointment to receive eribulin, contact your doctor as soon as possible to reschedule your appointment.

Do not dispose of medications in wastewater (e.g. down the sink or in the toilet) or in household garbage. Ask your pharmacist how to dispose of medications that are no longer needed or have expired.

What form(s) does this medication come in?

Each 1 mL of clear, colourless, aqueous solution for IV administration contains 0.5 mg of eribulin. Nonmedicinal ingredients: dehydrated alcohol USP (5% v/v), hydrochloric acid (for pH adjustment), sodium hydroxide (for pH adjustment), and water for injection USP (95% v/v).

Who should NOT take this medication?

Do not take this medication if you:

  • are allergic to eribulin or any ingredients of the medication
  • have had an allergic reaction to halichondrin B or its derivatives

What side effects are possible with this medication?

Many medications can cause side effects. A side effect is an unwanted response to a medication when it is taken in normal doses. Side effects can be mild or severe, temporary or permanent.

The side effects listed below are not experienced by everyone who takes this medication. If you are concerned about side effects, discuss the risks and benefits of this medication with your doctor.

The following side effects have been reported by at least 1% of people taking this medication. Many of these side effects can be managed, and some may go away on their own over time.

Contact your doctor if you experience these side effects and they are severe or bothersome. Your pharmacist may be able to advise you on managing side effects.

  • anxiety
  • constipation
  • diarrhea
  • dizziness
  • hair loss
  • headache
  • loss of appetite
  • nausea
  • tiredness
  • trouble sleeping
  • vomiting
  • weight loss

Although most of the side effects listed below don't happen very often, they could lead to serious problems if you do not seek medical attention.

Check with your doctor as soon as possible if any of the following side effects occur:

  • abdominal pain
  • bone, joint, or muscle pain
  • breathing problems (e.g., shortness of breath, persistent cough)
  • fever
  • increased blood pressure
  • irregular heartbeat
  • mouth sores or inflammation
  • muscle spasms or weakness
  • numbness, tingling or burning in hands and feet
  • sensation of spinning (vertigo)
  • signs of anemia (low red blood cells; e.g., dizziness, pale skin, unusual tiredness or weakness, shortness of breath)
  • signs of depression (e.g., poor concentration, changes in weight, changes in sleep, decreased interest in activities, thoughts of suicide)
  • signs of infection (symptoms may include fever or chills, severe diarrhea, shortness of breath, prolonged dizziness, headache, stiff neck, weight loss, or listlessness)
  • signs of liver problems (e.g., nausea, vomiting, diarrhea, loss of appetite, weight loss, yellowing of the skin or whites of the eyes, dark urine, pale stools)
  • skin rash or itching
  • swelling of hands, feet or limbs

Stop taking the medication and seek immediate medical attention if any of the following occur:

  • signs of a serious allergic reaction (e.g., abdominal cramps, difficulty breathing, nausea and vomiting, or swelling of the face and throat)
  • signs of pancreatitis (e.g., abdominal pain on the upper left side, back pain, nausea, fever, chills, rapid heartbeat, swollen abdomen)

Some people may experience side effects other than those listed. Check with your doctor if you notice any symptom that worries you while you are taking this medication.

Are there any other precautions or warnings for this medication?

Before you begin using a medication, be sure to inform your doctor of any medical conditions or allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should use this medication.

Abnormal heart rhythms: This medication can cause abnormal heart rhythms. Certain medications (e.g., sotalol, quinidine, thioridazine, chlorpromazine, droperidol, pimozide, moxifloxacin, mefloquine, pentamidine, arsenic trioxide, dolasetron mesylate, probucol, tacrolimus) can increase the risk of a type of abnormal heart rhythm called QT prolongation, and should not be used in combination with eribulin. You are more at risk for this type of abnormal heart rhythm and its complications if you:

  • are female
  • are older than 65 years of age
  • have a family history of sudden cardiac death
  • have a history of heart disease or abnormal heart rhythms
  • have a slow heart rate
  • have congenital prolongation of the QT interval
  • have diabetes
  • have had a stroke
  • have low potassium, magnesium, or calcium levels
  • have nutritional deficiencies

If you have heart disease and abnormal heart rhythms, or are taking certain medications (e.g., verapamil, atazanavir), discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.

Anemia: This medication may cause low levels of red blood cells. If you experience symptoms of reduced red blood cell count (anemia) such as shortness of breath, feeling unusually tired, or pale skin, contact your doctor as soon as possible.

Your doctor will do blood tests regularly to monitor the number of specific types of blood cells, including red blood cells, in your blood.

Infection: As well as killing cancer cells, eribulin can reduce the number of cells that fight infection in the body (white blood cells). If possible, avoid contact with people with contagious infections. Tell your doctor immediately if you notice signs of an infection, such as fever or chills, severe diarrhea, shortness of breath, prolonged dizziness, headache, stiff neck, weight loss, or listlessness. Your doctor will do blood tests regularly to monitor the number of specific types of blood cells in your blood.

Kidney function: Kidney disease or reduced kidney function may cause this medication to build up in the body, causing side effects. If you have reduced kidney function or kidney disease, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.

Liver function: Liver disease or reduced liver function may cause this medication to build up in the body, causing side effects. If you have liver problems, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed. Your doctor may want to test your liver function regularly with blood tests while you are taking this medication.

Pregnancy: This medication may harm a developing fetus if it is used by the mother while pregnant. Eribulin should not be used during pregnancy. If you become pregnant while taking this medication, contact your doctor immediately.

Breast-feeding: It is not known if eribulin passes into breast milk. If you are a breast-feeding mother and are taking this medication, it may affect your baby. Talk to your doctor about whether you should continue breast-feeding.

Children: The safety and effectiveness of using this medication have not been established for children.

What other drugs could interact with this medication?

There may be an interaction between eribulin and any of the following:

  • alfuzosin
  • amantadine
  • amiodarone
  • amphotericin B
  • antihistamines (e.g,. cetirizine, doxylamine, diphenhydramine, hydroxyzine, loratadine)
  •  antipsychotics (e.g., chlorpromazine, clozapine, haloperidol, olanzapine, quetiapine, risperidone)
  • apomorphine
  • “azole” antifungals (e.g., itraconazole, ketoconazole, voriconazole)
  • bosutinib
  • chloral hydrate
  • chloroquine
  • cisapride
  • dasatinib
  • dipyrone
  • disopyramide
  • domperidone
  • dronedarone
  • famotidine
  • fingolimod
  • flecainide
  • formoterol
  • galantamine
  • hydrocodone
  • indapamide
  • lithium
  • lomitapide
  • lopinavir
  • macrolide antibiotics (e.g., clarithromycin, erythromycin)
  • maprotiline
  • methadone
  • metoclopramide
  • mifepristone
  • nilotinib
  • octreotide
  • paliperidone
  • pentamidine
  • pimozide
  • procainamide
  • propafenone
  • romidepsin
  • quinidine
  • quinine
  • quinolone antibiotics (e.g., ciprofloxacin, norfloxacin, ofloxacin)
  • ritonavir
  • saquinavir
  • selective serotonin reuptake inhibitors (SSRIs; e.g., citalopram, fluoxetine, paroxetine, sertraline)
  • serotonin antagonists (anti-emetic medications; e.g., granisetron, ondansetron)
  • serotonin-norepinephrine reuptake inhibitors (SNRIs; e.g., duloxetine, venlafaxine)
  • sotalol
  • sulfamethoxazole
  • sunitinib
  • tacrolimus
  • tamoxifen
  • tetrabenazine
  • thioridazine
  • tolterodine
  • trazodone
  • trimethoprim
  • tricyclic antidepressants (e.g., amitriptyline, clomipramine, desipramine, trimipramine)
  • vardenafil

If you are taking any of these medications, speak with your doctor or pharmacist. Depending on your specific circumstances, your doctor may want you to:

  • stop taking one of the medications,
  • change one of the medications to another,
  • change how you are taking one or both of the medications, or
  • leave everything as is.

An interaction between two medications does not always mean that you must stop taking one of them. Speak to your doctor about how any drug interactions are being managed or should be managed.

Medications other than those listed above may interact with this medication. Tell your doctor or prescriber about all prescription, over-the-counter (non-prescription), and herbal medications you are taking. Also tell them about any supplements you take. Since caffeine, alcohol, the nicotine from cigarettes, or street drugs can affect the action of many medications, you should let your prescriber know if you use them.

All material copyright MediResource Inc. 1996 – 2017. Terms and conditions of use. The contents herein are for informational purposes only. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Source: www.medbroadcast.com/drug/getdrug/Halaven

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