Estradiol Cypionate is a prescribed form of estradiol hormone replacement therapy, designed to support patients with low levels of natural estrogens. With its slow-release properties and established clinical indications, it remains a valuable option for addressing hormone deficiencies and certain medical conditions. This guide provides an overview of what Estradiol Cypionate is, how it works, approved uses, administration details, potential side effects, and important considerations for care.
What is Estradiol Cypionate?
Estradiol Cypionate is an esterified form of estradiol that provides a slow release and extended duration of action. It is widely used in estradiol replacement therapy and has distinct differences from other formulations, such as Estradiol Valerate.
Difference Between Estradiol Cypionate and Valerate
Estradiol Cypionate and Estradiol Valerate are approved to be injected intramuscularly and may be injected subcutaneously when used off-label. Estradiol Cypionate is compounded with grapeseed oil and has a longer prolonged action of 3-6 weeks, while Estradiol Valerate is made with sesame oil or castor oil and has a shorter duration of action of 2-3 weeks.
How Does Estradiol Cypionate Work in the Body?
Estradiol is a naturally occurring hormone synthesized by cells in the ovaries, testes, adrenal glands, fat, liver, and brain. It is responsible for the normal growth and development of the female sex organs and the maintenance of secondary sex characteristics. It also influences the skeletal system, skin health, cardiovascular system, and nervous system.
Estradiol Cypionate is an esterified variant of estradiol that allows for a slow-release rate and an extended duration of action. It is primarily used as estradiol replacement therapy for menopausal patients with a deficiency of endogenous estrogens, although there are other approved indications.
Administration and Usage Guidelines
Estradiol Cypionate is injected either intramuscularly or subcutaneously, depending on the indication.
Approval and Clinical Indication
Estradiol Cypionate is commercially available as an intramuscular injection and a subcutaneous injection. The intramuscular injection has FDA-approved indications for the treatment of vasomotor symptoms and genitourinary syndrome of menopause, the treatment of hypoestrogenism due to hypogonadism and primary ovarian insufficiency, including Turner syndrome. The subcutaneous injection has an off-label indication for use in feminine-affirming therapy.
H3: Dosing Frequency and Injection Schedule
Intramuscular route of administration:
- Vasomotor symptoms and genitourinary syndrome of menopause:
- 1-5 mg IM every 3-4 weeks as necessary
- Hypoestrogenism due to hypogonadism and primary ovarian insufficiency, including Turner syndrome:
- Adults – 1.5-2 mg IM once monthly. Continue for reproductive life.
- Children and Adolescents 11-17 years – 0.2-0.4 mg IM once monthly initially. Increasing dosage gradually over 2 to 4 years to mimic the normal process of puberty. Continue treatment for reproductive life. Maximum dose of 2.5 mg
Intramuscular or Subcutaneous Route of Administration:
- Use in feminine-affirming therapy (off-label indication)
- Adults – 1-10 mg IM or subcutaneously every week. Increases based on individual response and hormone levels monitored (every 3 months in the first year, then once to twice yearly thereafter)
- Adolescents – 2-10 mg IM or subcutaneously every week. Increases based on individual response and hormone levels monitored (every 3 months in the first year, then once to twice yearly thereafter)
Formulation and Mode of Administration
- Strength and form: Estradiol Cypionate 10mg/ml injection solution
- Vial size: 5 ml
- Route of administration: IM or SQ
Storage and Beyond Use Date
Estradiol Cypionate should be stored at room temperature (between 68°F to 77°F). It will have a beyond-use date of approximately 6 weeks after the patient receives it and should be used within 28 days after the first vial puncture.
Potential Side Effects of Estradiol Cypionate
You may experience pain, bruising, bleeding, redness, or a hard lump where the medicine was injected. Other common side effects include breast pain, tenderness, enlargement, discharge or lumps, irregular menses, vaginal discharge, stomach/abdominal pain, cramps, bloating, nausea or vomiting, weight gain, fluid retention, headache, fatigue, mood changes or swings, anxiety, nervousness, irritability, changes in libido/sex drive, or blood clotting.
Insurance Coverage and Cost of Estradiol Cypionate
Because compounded Estradiol Cypionate is personalized and not reviewed by the FDA, insurance usually doesn’t cover it, meaning most patients pay out-of-pocket. Still, tools like HSAs, FSAs, and speaking with your insurance company can help reduce the financial burden. For pricing information, please call the pharmacy directly.
Medivera’s Approach To Patient Care And Pharmacy Support
MediVera Compounding Pharmacy™ has a staff of trained pharmacists eager to discuss Estradiol Cypionate or any other medications with you or your staff. They can go over any questions regarding dosing, storage, shipping, or anything else you may need.
Our pharmacy prides itself on excellent customer service with our proprietary program, the Impressed Advantage by MediVera Compounding Pharmacy™. When we receive a prescription, our pharmacy team will reach out to the patient to set up pick-up or delivery and have a pharmacist discuss the use of each medication. You can count on Medivera to take care of your patient’s needs accurately and quickly.
Our team is ready to help with any questions you may have on starting your patients on Estradiol Cypionate or any other medication. We can also help in transitioning patients over from other pharmacies. Call us today to answer your questions and get your patients started on their journey to better health.
References:
- https://www.clinicalkey.com/pharmacology/monograph/1330?n=Estradiol
- https://www.drugs.com/estradiol.html
- https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=9a4229fd-fecd-4ac1-9c4f-6d442533457f
- https://pubchem.ncbi.nlm.nih.gov/compound/9403
- https://www.accessdata.fda.gov/drugsatfda_docs/label/2005/085470s015lbl.pdf
- https://www.accessdata.fda.gov/drugsatfda_docs/label/2017/009402s052lbl.pdf
