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Abiraterone

Abiraterone is used to treat prostate cancer. 
  • Article last reviewed 30 August 2025
  • 12 mins read

What is this medication for?

Abiraterone is used to treat prostate cancer. 

How should I take or use this medication?

  • Take Abiraterone once a day, on an empty stomach, at least 1 hour before or 2 hours after food.
  • Swallow the tablet/capsule whole.
    • Do not break, chew or crush the tablet.
    • Inform your doctor or pharmacist if you have difficulty swallowing.
  • Oral prednisolone tablet is usually given with Abiraterone to reduce the risk of high blood pressure, low blood potassium levels and fluid build-up. 

What should I do if I forget to take or use this medication?

  • If you forget to take a dose, skip the missed dose, and take it at the next scheduled time. Do not take two doses to make up for the missed dose. 

What precautions should I take when taking or using this medication?

  • Inform your healthcare professional if:
    • You are allergic to this medication or any of the other ingredients of this medication.
    • You are taking any other medications (e.g. phenytoin, rifampicin) , including supplements, traditional medications and herbal remedies.
    • You have any other medical conditions.
    • You have any plans to start a family in the future.
      1. Abiraterone may have an anti-fertility effect, which could be irreversible. You should discuss fertility preservation options with your doctor before starting treatment.

If you have a partner who could become pregnant, you should use an effective birth control method during treatment and for at least 3 weeks after stopping Abiraterone.

What are some common side effects of this medication? ​

The table below will list some of the common side effects as well as the rare but serious side effects.

Side EffectManagement
Hot flushes (sudden sweating and feeling of warmth) 
  • Wearing light clothing, and staying in a cool environment may reduce these symptoms.
  • Inform your doctor if these symptoms affect you significantly.
Diarrhoea (loose and frequent stools)
  • Drink plenty of clear fluids (at least 2 litres or 8 cups every day).
  • Eat food that is gentler on the stomach such as porridge or soup.
  • Avoid milk, dairy products, high-fibre food and oily or spicy food.
  • Your doctor may prescribe medications to help relieve diarrhoea. Take these as instructed.
  • Proceed to the A&E Department immediately if you have very bad diarrhoea (for example increase in bowel movement of more than 4 times per day) that does not improve even after taking anti-diarrhoeal medications.
Muscle aches and/or joint pain
  • Mild pain can be relieved by taking Paracetamol.
  • Inform your doctor if the pain is not better.
  • Do not take Paracetamol if you are having a fever at the same time.
  • Taking regular warm baths may help

Increase in blood pressure 

  • If your blood pressure is very high, you may have headache, dizziness or blurry eyesight.
  • Inform your doctor if you have such symptoms of increase in blood pressure frequently.
  • If you have been prescribed with high blood pressure medications, continue to take your medications regularly as instructed.
  • Your doctor may adjust your blood pressure medications if needed.
  • If you have a blood pressure monitoring machine at home, measure your blood pressure at the same time(s) every day and record it in a book. Bring it for your future appointments.
Stomach discomfort. Prednisolone may irritate the stomach and cause discomfort. Take Prednisolone after food to reduce stomach discomfort.
Decrease in blood sugar levels

This medication may cause low blood sugar (hypoglycaemia). 

Symptoms of low blood sugar are weakness, dizziness, hunger, sweating, trembling, blurred vision, walking unsteadily or fast heartbeat.

Increase in blood sugar levels. Prednisolone may cause raised blood sugar levels.
  • Blood sugar levels often return to baseline upon stopping Prednisolone.
  • For diabetic patients, you will need to monitor your blood sugar regularly.
  • Inform your doctor if you experience symptoms of high blood sugar levels e.g. feeling thirstier than usual or passing urine more frequently.
Weight gain. Prednisolone may increase your appetite and result in weight gain.Keep a healthy and balanced diet to maintain your weight. 
Insomnia (difficulty falling and/or staying asleep.)   

Prednisolone may cause insomnia. 

Take the tablets early in the day to avoid difficulty sleeping at night.

Increase in cholesterol or triglycerides levels   

You may have your cholesterol level checked before starting Abiraterone, and periodically after starting Abiraterone.   

Your doctor may prescribe medications to control your cholesterol levels if required.

Liver problems 

Proceed to the A&E department immediately if you experience any: 

  • Dark or tea-coloured urine
  • Pale or light-coloured stools
  • Yellowing of skin or eyes
  • Nausea, vomiting with loss of appetite
  • Severe abdominal pain

Fluid retention 

  • Swelling of ankles and legs due to fluid build-up
  • You may notice some painless swelling at the lower legs or unusual weight gain.
  • Taking the Prednisolone tablets may help to prevent this.
  • For mild leg swelling, resting your  legs onto a foot stool, cushion or pillow may help to improve blood flow and reduce the swelling.
  • Inform your doctor if this symptom is severe or bothering you.
Bone loss or thinning, and fractures   
  • Maintain sufficient calcium and vitamin D intake.
  • Your doctor will monitor your bone density and prescribe medications to strengthen your bone when required.
Heart problems Proceed to the A&E department immediately if you experience signs of heart problems such as shortness of breath, difficulty breathing, chest pain, fast heartbeat, or sudden swelling of legs.   

Symptoms of drug allergy including one or more of the following:

  • Swollen face/eyes/lips/tongue
  • Difficulty in breathing
  • Itchy skin rashes over your whole body
If you experience any of these symptoms, you should stop your medication and see your healthcare professional immediately.

 It is normal to experience some side effects from Abiraterone. As discussed with your doctor, taking Abiraterone will be beneficial for your condition. Do not stop taking Abiraterone without checking with your doctor.

What food or medication should I avoid when I take or use this medication?

Avoid taking certain fruits such as grapefruit, pomelo, starfruit and pomegranate when you are taking this medication. This is because these fruits may affect how the body processes the drug and increase the risk of side-effects.

How should I store this medication?

Store in a cool and dry place, away from direct sunlight. Keep this medication away from children. 

How do I throw away this medication safely? ​

For general waste: Pack this medication into a black trash bag and seal it tightly before throwing into the rubbish chute or bin. 

What else should I know about this medication? 

Tips to help manage your condition while you are on Abiraterone

ExerciseLight exercise is recommended as it helps to improve mobility, balance, and even emotional well-being. Avoid strenuous exercise, and rest when you are feeling tired.
Adequate hydrationHave plenty of hydration with 2 to 3 litres of fluids per day unless you have been informed by your doctor to limit how much fluids you can drink. This will decrease your chances of getting constipation and prevent dehydration.
Medical and dental treatment

If you need to go into hospital for any reason other than cancer, always inform the doctors and nurses that you are receiving anti-cancer treatment.

Talk to your cancer doctor if you think you need dental treatment. Always inform your dentist that you are receiving anti-cancer treatment.

Seek support if you feel overwhelmed

It is normal to feel fearful or worried about your condition.

Do not be afraid to share your concerns with your healthcare team or loved ones.

There may be resources and support available to help you.

Disclaimer

Please take note that the above is not a complete list of all possible side-effects. If you have any concerns about your medication or if you have other side-effects that you think are caused by this medication, please consult your doctor or pharmacist. If you take more than the recommended dose, please seek medical advice immediately. The information provided on this page does not replace information from your healthcare professional. Please consult your healthcare professional for more information.

This article is jointly developed by members of the National Medication Information workgroup. The workgroup consists of cluster partners (NHG Health, National University Health System and SingHealth), community pharmacies (Guardian, Unity and Watsons) and Pharmaceutical Society of Singapore. The content does not reflect drug availability and supply information in pharmacies and healthcare institutions. You are advised to check with the respective institutions for such information.