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Firmagon

Generic name: degarelix

What is Firmagon used for?

  • Firmagon is used to treat prostate cancer.
  • Firmagon may be given to you for other reasons. Talk to your doctor.

Before taking Firmagon, tell your doctor:

  • If you are allergic to Firmagon; any part of this medicine; or any other drugs, foods, or substances. Tell your doctor about the allergy and what signs you had.
  • If you have electrolyte (like sodium, potassium, phosphate) problems.
  • If you are a woman. This medicine is not approved for use in women. This medicine may cause harm to an unborn baby or loss of an unborn baby if it is taken during pregnancy. If you are a woman using Firmagon, talk with your doctor if you are pregnant, plan on getting pregnant, or are breast-feeding.

This is not a list of all drugs or health problems that interact with this medicine.

Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take Firmagon with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.

What are some things I need to know or do while I take Firmagon?

  • Tell all of your health care providers that you take Firmagon. This includes your doctors, nurses, pharmacists, and dentists.
  • Have blood work checked as you have been told by the doctor. Talk with the doctor.
  • This medicine may cause weak bones. This may happen more often if used for a long time. This may raise the chance of broken bones. Call your doctor right away if you have bone pain.
  • Have a bone density test as you have been told by your doctor. Talk with your doctor.
  • You may need to have an ECG checked before starting Firmagon and while taking it. Talk with your doctor.
  • This medicine may affect certain lab tests. Tell all of your health care providers and lab workers that you take Firmagon.
  • Do not scratch or rub the skin where Firmagon is given.

How is Firmagon best taken?

Use Firmagon as ordered by your doctor. Read all information given to you. Follow all instructions closely.

  • It is given as a shot into the fatty part of the skin.
  • Your doctor will give Firmagon.
  • Do not use pressure (waist band or belt) on the part where the shot is given.

What do I do if I miss a dose?

  • Call your doctor to find out what to do.

What are the side effects of Firmagon that I need to call my doctor about immediately?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Signs of high blood pressure like very bad headache or dizziness, passing out, or change in eyesight.
  • Signs of a urinary tract infection (UTI) like blood in the urine, burning or pain when passing urine, feeling the need to pass urine often or right away, fever, lower stomach pain, or pelvic pain.
  • A type of abnormal heartbeat (prolonged QT interval) can happen with Firmagon. Call your doctor right away if you have a fast heartbeat, a heartbeat that does not feel normal, or if you pass out.

What are some other side effects of Firmagon?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:

  • Weight gain.
  • Not able to get or keep an erection.
  • Lowered interest in sex.
  • Feeling tired or weak.
  • Hot flashes.
  • Back pain.
  • Joint pain.
  • Chills.
  • Constipation.
  • Redness or swelling where the shot is given.
  • Itching where the shot is given.
  • Pain where the shot was given.

These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.

You may report side effects to the FDA at 1-800-332-1088. You may also report side effects at https://www.fda.gov/medwatch.

If overdose is suspected:

If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

How do I store and/or throw out Firmagon?

  • If you need to store Firmagon at home, talk with your doctor, nurse, or pharmacist about how to store it.

Consumer information use and disclaimer

  • If your symptoms or health problems do not get better or if they become worse, call your doctor.
  • Do not share your drugs with others and do not take anyone else's drugs.
  • Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
  • Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
  • Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about Firmagon, please talk with your doctor, nurse, pharmacist, or other health care provider.
  • If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

This information should not be used to decide whether or not to take Firmagon or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to Firmagon. This information is not specific medical advice and does not replace information you receive from the healthcare provider. You must talk with the healthcare provider for complete information about the risks and benefits of using this medicine.

Source: Wolters Kluwer Health. Last updated April 5, 2023.