FASLODEX Side Effects

The safety of FASLODEX has been evaluated in clinical studies. As with any medication, you may experience side effects when taking FASLODEX, so it is important to be prepared. Click here to get helpful questions to ask your doctor.

During your treatment with FASLODEX, you may experience side effects. If you are concerned about any symptoms you may be experiencing, you should contact your doctor’s office right away.

Most common side effects

  • In a clinical trial, commonly reported side effects seen with FASLODEX were injection site pain, nausea, muscle, joint, and bone pain, headache, tiredness, hot flashes, vomiting, loss of appetite, weakness, cough, constipation, shortness of breath, and increased liver enzymes
  • 0.6% of patients receiving FASLODEX 500 mg and 0.8% of patients receiving FASLODEX 250 mg withdrew from treatment due to drug-related side effects

Because FASLODEX is metabolized, or broken down, primarily in the liver, a monthly dose of 250 mg is recommended for patients with moderate liver problems.

FASLODEX was not studied in patients with severe liver problems.

Because FASLODEX is administered directly into the muscle, you should tell your doctor if you have a blood disorder or are on anticoagulants (sometimes called blood thinners).

Talk to your doctor to see if FASLODEX is right for you

FASLODEX is a prescription medicine used to treat hormone receptor-positive metastatic breast cancer in women who have gone through menopause whose disease has spread after treatment with antiestrogen medicine.

IMPORTANT SAFETY INFORMATION: You should not receive FASLODEX if you have had an allergic reaction to any of the ingredients in FASLODEX. Symptoms of an allergic reaction to FASLODEX may include itching, swelling of your face, lips, tongue, or throat, or trouble breathing.

Click here for additional safety information.

Supporting women with metastatic breast cancer for over a decade.Supporting women with metastatic breast cancer for over a decade.

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