Fluoxymesterone tablets

What is this medication?

FLUOXYMESTERONE (floo ox i MES te rone) is a male hormone, similar to testosterone. It is used to treat low testosterone levels in males and breast cancer in females.

This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.

COMMON BRAND NAME(S): ANDROXY, Halotestin

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What should I tell my care team before I take this medication?

They need to know if you have any of these conditions:

  • Diabetes
  • Heart disease
  • Kidney disease
  • Liver disease
  • Prostate cancer, enlargement
  • An unusual or allergic reaction to fluoxymesterone, medications, foods, dyes, or preservatives
  • Pregnant or trying to get pregnant
  • Breast-feeding

How should I use this medication?

Take this medication by mouth with a glass of water. Follow the directions on the prescription label. Take your medication at regular intervals. Do not take it more often than directed. Do not stop taking except on your care team's advice.

Talk to your care team about the use of this medication in children. Special care may be needed.

Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.

NOTE: This medicine is only for you. Do not share this medicine with others.

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What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

What may interact with this medication?

  • medicines for diabetes
  • medicines that treat or prevent blood clots like warfarin
  • oxyphenbutazone

This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.

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What should I watch for while using this medication?

Visit your doctor or health care professional for regular checks on your progress.

This medicine may affect blood sugar levels. If you have diabetes, check with your doctor or health care professional before you change your diet or the dose of your diabetic medicine.

This drug is banned from use by athletes in athletic organizations.

What side effects may I notice from receiving this medication?

Side effects that you should report to your doctor or health care professional as soon as possible:

  • allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
  • breast enlargement
  • breathing problems
  • changes in mood, especially anger, depression, or rage
  • dark urine
  • general ill feeling or flu-like symptoms
  • in women: acne, change in monthly cycle, deep voice, enlarged clitoris, more face hair
  • light-colored stools
  • loss of appetite, nausea
  • nausea, vomiting
  • right upper belly pain
  • swelling of ankles, feet, hands
  • too frequent or persistent erections
  • trouble passing urine or change in the amount of urine
  • unusually weak or tired
  • yellowing of the eyes or skin

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

  • acne in men
  • change in sex drive or performance
  • headache

This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Where should I keep my medication?

Keep out of the reach of children. This medicine can be abused. Keep your medicine in a safe place to protect it from theft. Do not share this medicine with anyone. Selling or giving away this medicine is dangerous and against the law.

Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F). Throw away any unused medicine after the expiration date.

NOTE: This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider.

Copyright ©2024 Elsevier Inc. All Rights Reserved.

Terms of use.

Note: Introduction and Additional Common Questions written and medically approved by Cleveland Clinic professionals.

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