estradiol (injection)

What is the most important information I should know about estradiol injection?

What is estradiol injection?

Estradiol is a form of estrogen, a female sex hormone that regulates many processes in the body.

Estradiol injection is used to treat certain symptoms of menopause such as hot flashes and vaginal dryness, burning, or irritation. It is also used to treat a lack of estrogen that is caused by ovarian failure or a condition called hypogonadism.

Some forms of estradiol injection are used in men to treat the symptoms of prostate cancer. Estradiol treats only the symptoms of prostate cancer but does not treat the cancer itself.

Estradiol injection may also be used for purposes not listed in this medication guide.

What should I discuss with my health care provider before using estradiol injection?

• unusual vaginal bleeding that has not been checked by a doctor;
• liver disease;
• a history of heart attack, stroke, or blood clot; or
• a history of hormone-related cancer, or cancer of the breast, uterus/cervix, or vagina.

Using estradiol can increase your risk of blood clots, stroke, or heart attack. You are even more at risk if you have high blood pressure, diabetes, high cholesterol, if you are overweight, or if you smoke.

Tell your doctor if you have ever had:

• heart disease;
• liver problems, or jaundice caused by pregnancy or taking hormones;
• a thyroid disorder;
• gallbladder disease;
• kidney disease;
• asthma;
• epilepsy or other seizure disorder;
• migraine headaches;
• lupus;
• porphyria (a genetic enzyme disorder that causes symptoms affecting the skin or nervous system);
• endometriosis or uterine fibroid tumors;
• high or low levels of calcium in your blood; or
• hereditary angioedema (an immune system disorder).

How is estradiol injection given?

Follow all directions on your prescription label and read all medication guides or instruction sheets. Use the medicine exactly as directed.

Estradiol is injected into a muscle, usually given once every 2 to 4 weeks, depending on the condition being treated. A healthcare provider can teach you how to properly use the medication by yourself.

Read and carefully follow any Instructions for Use provided with your medicine. Do not use estradiol if you don't understand all instructions for proper use. Ask your doctor or pharmacist if you have questions.

Prepare your injection only when you are ready to give it. Do not use if the medicine has changed colors or has particles in it. Call your pharmacist for new medicine.

If you need major surgery or will be on long-term bed rest, you may need to stop using this medicine for a short time. Any doctor or surgeon who treats you should know that you are using estradiol.

Your doctor should check your progress on a regular basis to determine whether you should continue this treatment. Self-examine your breasts for lumps on a monthly basis, and have regular mammograms while using estradiol.

Use a needle and syringe only once and then place them in a puncture-proof "sharps" container. Follow state or local laws about how to dispose of this container. Keep it out of the reach of children and pets.

What happens if I miss a dose?

What happens if I overdose?

What should I avoid while using estradiol injection?

Grapefruit may interact with estradiol and lead to unwanted side effects. Avoid the use of grapefruit products.

What are the possible side effects of estradiol injection?

• heart attack symptoms --chest pain or pressure, pain spreading to your jaw or shoulder, nausea, sweating;
• signs of a stroke --sudden numbness or weakness (especially on one side of the body), sudden severe headache, slurred speech, problems with vision or balance;
• signs of a blood clot --sudden vision loss, stabbing chest pain, feeling short of breath, coughing up blood, pain or warmth in one or both legs;
• swelling or tenderness in your stomach;
• jaundice (yellowing of the skin or eyes);
• memory problems, confusion, unusual behavior;
• unusual vaginal bleeding, pelvic pain;
• a lump in your breast; or
• high levels of calcium in your blood --nausea, vomiting, constipation, increased thirst or urination, muscle weakness, bone pain, lack of energy.

Common side effects may include:

• breast pain;
• headache;
• vaginal itching or discharge, changes in your menstrual periods, breakthrough bleeding;
• thinning scalp hair; or
• nausea, vomiting, bloating, stomach cramps.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What other drugs will affect estradiol injection?

Sometimes it is not safe to use certain medications at the same time. Some drugs can affect your blood levels of other drugs you take, which may increase side effects or make the medications less effective.

Other drugs may affect estradiol, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell your doctor about all your current medicines and any medicine you start or stop using.

Where can I get more information?

Your pharmacist can provide more information about estradiol injection.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.

Copyright 1996-2023 Cerner Multum, Inc. Version: 4.02. Revision date: 9/6/2018.