What Is Halotestin?

Halotestin (fluoxymesterone) is a male hormone (androgen) used in men as replacement therapy in conditions associated with symptoms of deficiency or absence of endogenous testosterone, and in delayed puberty. Halotestin may also be used in some women for palliation of androgen-responsive recurrent breast cancer. The brand name Halotestin is discontinued, but generic versions may be available.

What Are Side Effects of Halotestin?

Common side effects of Halotestin (fluoxymesterone) include:

• nausea
• vomiting
• headache
• skin color changes
• increased/decreased sexual interest
• oily skin
• hair loss, and
• acne

Tell your doctor if you experience these unlikely but serious side effects: anxiety, depression, increased anger. Men should tell their doctor if they experience side effects including difficulty urinating, frequent or prolonged erections, or breast swelling/tenderness. Women should tell their doctor if they experience side effects including deepening voice, unusual hair growth, or irregular menstrual periods.

Seek medical care or call 911 at once if you have the following serious side effects:

• Serious eye symptoms such as sudden vision loss, blurred vision, tunnel vision, eye pain or swelling, or seeing halos around lights;
• Serious heart symptoms such as fast, irregular, or pounding heartbeats; fluttering in your chest; shortness of breath; and sudden dizziness, lightheadedness, or passing out;
• Severe headache, confusion, slurred speech, arm or leg weakness, trouble walking, loss of coordination, feeling unsteady, very stiff muscles, high fever, profuse sweating, or tremors.

This document does not contain all possible side effects and others may occur. Check with your physician for additional information about side effects.

Dosage for Halotestin

The dosage of Halotestin varies depending upon the individual, the condition being treated, and its severity. The total daily oral dose may be administered singly or in divided (three or four) doses.

What Drugs, Substances, or Supplements Interact with Halotestin?

Halotestin may interact with blood thinners, or corticosteroids. Tell your doctor all medications and supplements you use.

Halotestin During Pregnancy and Breastfeeding

Halotestin must not be used during pregnancy. It may harm a fetus. Discuss birth control with your doctor. It is recommended that women using this medication use 2 forms of birth control (such as condoms and birth control pills) while taking this medication. It is unknown if this drug passes into breast milk. It may affect milk production and it may harm a nursing infant. Breastfeeding while using this drug is not recommended.

Additional Information

Our Halotestin (fluoxymesterone) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.