Recommended Topic Related To:


"The U.S. Food and Drug Administration today approved Xofigo (radium Ra 223 dichloride) to treat men with symptomatic late-stage (metastatic) castration-resistant prostate cancer that has spread to bones but not to other organs. It is intended for"...


Discontinued Warning IconPlease Note: This Brand Name drug is no longer available in the US.
(Generic versions may still be available.)

Plenaxis Patient Information including How Should I Take

What should I discuss with my healthcare provider before using abarelix (Plenaxis)?

Before using abarelix, tell your doctor if you

  • have irregular heartbeats;
  • have liver problems;
  • have osteoporosis; or
  • weigh more than 225 pounds.

You may not be able to use abarelix, or you may require a dosage adjustment or special monitoring during treatment.

Abarelix is not intended for use by women. Abarelix is in the FDA pregnancy category X. This means that abarelix will cause birth defects in an unborn baby. Do not use this medication if you are pregnant or if you could become pregnant during treatment.

Abarelix is not intended for use by women. It is not known whether abarelix passes into breast milk. Do not use this medication without first talking to your doctor if you are breast-feeding a baby.

How should I use abarelix (Plenaxis)?

Abarelix must be administered by a qualified healthcare provider.

Abarelix is administered as an injection into the muscle.

In some cases, the use of abarelix has resulted in serious allergic reactions. An allergic reaction may occur after any injection of the medication, including, but not limited to the first dose. Patients should be observed in the doctor's office for at least 30 minutes following each dose so that immediate treatment of an allergic reaction can be obtained if needed.

Treatment with abarelix may become less effective over time in some patients. Monitoring blood levels of testosterone will be done on a regular basis with blood tests to monitor the effectiveness of the medication.

It is important to use abarelix regularly to get the most benefit.

Abarelix vials for injection should be stored at room temperature away from moisture and heat.

Side Effects Centers

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


Get the latest treatment options.