Description and Brand Names

Drug information provided by: Micromedex

US Brand Name

  1. Zytiga

Descriptions


Note: Women of childbearing potential should not use or handle abiraterone tablets without protection (e.g., gloves).

Abiraterone is used in combination with prednisone to treat patients with metastatic castration-resistant prostate cancer (prostate cancer that is resistant to medical or surgical treatments that lower testosterone and has already spread to other parts of the body). This medicine is used in patients who have received cancer treatments, such as docetaxel.

This medicine is available only with your doctor's prescription.

This product is available in the following dosage forms:

  • Tablet

Before Using

In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:

Allergies

Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.

Pediatric

Abiraterone is not indicated for use in the pediatric population. Safety and efficacy have not been established.

Geriatric

Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of abiraterone in the elderly.

Pregnancy

Information about this abiraterone-oral-route
Pregnancy Category Explanation
All Trimesters X Studies in animals or pregnant women have demonstrated positive evidence of fetal abnormalities. This drug should not be used in women who are or may become pregnant because the risk clearly outweighs any possible benefit.

Breastfeeding

There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.

Drug Interactions

Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.

Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.

  • Agomelatine
  • Colchicine
  • Lomitapide

Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

  • Afatinib
  • Amiodarone
  • Carbamazepine
  • Clozapine
  • Dabigatran Etexilate
  • Dabrafenib
  • Doxorubicin
  • Doxorubicin Hydrochloride Liposome
  • Enzalutamide
  • Eslicarbazepine Acetate
  • Everolimus
  • Fentanyl
  • Flecainide
  • Fluoxetine
  • Fosphenytoin
  • Hydrocodone
  • Ibrutinib
  • Lurasidone
  • Mitotane
  • Morphine
  • Morphine Sulfate Liposome
  • Nilotinib
  • Ospemifene
  • Oxycodone
  • Paclitaxel
  • Phenobarbital
  • Phenytoin
  • Piperaquine
  • Pixantrone
  • Pomalidomide
  • Primidone
  • Repaglinide
  • Rifabutin
  • Rifampin
  • Rifapentine
  • Romidepsin
  • Rosiglitazone
  • Siltuximab
  • Simeprevir
  • St John's Wort
  • Tamoxifen
  • Tasimelteon
  • Thioridazine
  • Topotecan
  • Trabectedin
  • Vilazodone
  • Vortioxetine

Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

  • Dextromethorphan
  • Pioglitazone

Other Interactions

Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.

Other Medical Problems

The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:

  • Adrenal or pituitary problems, history of or
  • Heart attack, recent or
  • Heart failure or
  • Heart or blood vessel disease, history of or
  • Heart rhythm problems (e.g., ventricular arrhythmia) or
  • Hypertension (high blood pressure) or
  • Hypokalemia (low potassium in the blood)—Use with caution. May make these conditions worse.
  • Liver disease—Use with caution. The effects may be increased because of slower removal of the medicine from the body.

Proper Use

Take this medicine only as directed by your doctor to benefit your condition as much as possible. Do not take more of it, do not take it more often, and do not take it for a longer time than your doctor ordered.

This medicine comes with a patient information leaflet. Read the information carefully and make sure you understand it before taking this medicine. If you have any questions, ask your doctor.

Swallow the tablets whole with water. Do not break, crush, or chew it.

It is best to take this medicine on an empty stomach. Do not eat 2 hours before or 1 hour after taking abiraterone.

Dosing

The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.

The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.

  • For oral dosage form (tablets):
    • For castration-resistant prostate cancer:
      • Adults—1000 milligrams (mg) (four 250-mg tablets) once a day, taken together with 5 mg oral prednisone two times a day.
      • Children—Use is not recommended.

Missed Dose

If you miss a dose of this medicine, skip the missed dose and go back to your regular dosing schedule. Do not double doses.

If you missed a dose of this medicine, take your normal dose on the following day. If more than one daily dose is missed, call your doctor.

Storage

Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.

Keep out of the reach of children.

Do not keep outdated medicine or medicine no longer needed.

Ask your healthcare professional how you should dispose of any medicine you do not use.

Precautions

It is very important that your doctor check you at regular visits to make sure that this medicine is working properly. Blood tests will be needed to check for any unwanted effects that may be caused by this medicine.

Women and children should not use this medicine. Pregnant women or women who may become pregnant should not handle or touch the tablets without protection (e.g., gloves). This medicine may also cause birth defects if the father is using it when his sexual partner becomes pregnant. You must use a condom and another effective method of birth control during and for 1 week after the last dose of abiraterone. If a pregnancy occurs while you are using this medicine, tell your doctor right away.

You will also need to have your blood pressure measured before starting this medicine and while you are using it. If you notice any change to your recommended blood pressure, call your doctor right away. If you have questions about this, talk to your doctor.

Do not interrupt or stop using this medicine together with prednisone without asking your doctor. This may increase your risk of having adrenal gland problems. Talk to your doctor if you have more than one of these symptoms while you are using this medicine: darkening of the skin, diarrhea, dizziness, fainting, loss of appetite, mental depression, nausea, skin rash, unusual tiredness or weakness, or vomiting.

Check with your doctor right away if you have pain or tenderness in the upper stomach, pale stools, dark urine, loss of appetite, nausea, unusual tiredness or weakness, or yellow eyes or skin. These could be symptoms of a serious liver problem.

Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.

Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

More common

  1. Bladder pain
  2. bloating or swelling of the face, arms, hands, lower legs, or feet
  3. bloody or cloudy urine
  4. blurred vision
  5. bone fracture
  6. chest pain or discomfort
  7. convulsions
  8. decreased urine
  9. difficult, burning, or painful urination
  10. dizziness
  11. dry mouth
  12. fainting
  13. fast, pounding, or irregular heartbeat or pulse
  14. feeling of warmth
  15. frequent urge to urinate
  16. headache
  17. increased need to urinate
  18. increased thirst
  19. increased urge to urinate during the night
  20. lightheadedness, dizziness, or fainting
  21. loss of appetite
  22. lower back or side pain
  23. mood changes
  24. muscle pain or cramps
  25. nausea or vomiting
  26. nervousness
  27. numbness or tingling in the hands, feet, or lips
  28. pain or swelling in the arms or legs without any injury
  29. passing urine more often
  30. pounding in the ears
  31. rapid weight gain
  32. redness of the face, neck, arms, and occasionally, upper chest
  33. shortness of breath
  34. slow heartbeat
  35. sudden sweating
  36. swelling
  37. swelling with pits or depressions on the skin
  38. unusual tiredness or weakness
  39. unusual weight gain or loss
  40. waking to urinate at night

Less common

  1. Abdominal or stomach pain or tenderness
  2. arm, back, or jaw pain
  3. chest tightness or heaviness
  4. clay colored stools
  5. cool, sweaty skin
  6. dark urine
  7. decreased appetite
  8. decreased urine output
  9. difficulty with breathing
  10. dilated neck veins
  11. extreme fatigue
  12. fever
  13. headache
  14. irregular breathing
  15. itching skin
  16. rash
  17. sweating
  18. swelling of the face, fingers, feet, or lower legs
  19. weakness
  20. weight gain
  21. wheezing
  22. yellow eyes or skin

Rare

  1. Darkening of the skin
  2. diarrhea
  3. mental depression

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

  1. Acid or sour stomach
  2. belching
  3. body aches or pain
  4. chills
  5. cough
  6. difficulty with moving
  7. ear congestion
  8. heartburn
  9. indigestion
  10. joint pain
  11. loss of voice
  12. muscle cramps or spasms
  13. muscle or bone pain
  14. muscle stiffness
  15. nasal congestion
  16. runny nose
  17. sneezing
  18. sore throat
  19. stomach discomfort or upset
  20. swelling or stiffness of the joints

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.