Fluoroestradiol F 18 (floor-oh-es-tra-DYE-ol F 18)

Given just before a PET scan (positron emission tomography) to help detect estrogen receptor-positive lesions in patients with breast cancer.

Brand Name(s):

Cerianna

When This Medicine Should Not Be Used:

How to Use This Medicine:

Injectable

• A doctor or other trained health professional will give you this medicine. It is given through an IV placed into one of your veins just before you have a PET scan.
• Drink enough water to be hydrated before the PET scan.
• Drink water and urinate as often as possible during the first few hours after receiving the medicine to minimize your radiation exposure.

Drugs and Foods to Avoid:

Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.

• Some medicines can affect how fluoroestradiol F 18 works. Tell your doctor if you are using elacestrant, fulvestrant, or tamoxifen.

Warnings While Using This Medicine:

• Tell your doctor if you are pregnant, or if you have kidney disease or liver disease.
• Do not breastfeed for at least 4 hours after receiving this medicine.
• You will be exposed to radiation while you receive this medicine. If you have any questions about this, talk to your doctor.

Possible Side Effects While Using This Medicine:

Call your doctor right away if you notice any of these side effects:

• Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

If you notice these less serious side effects, talk with your doctor:

• Change in or loss of taste
• Pain, redness, or irritation of your skin where the needle is placed

If you notice other side effects that you think are caused by this medicine, tell your doctor

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088