ESTRADIOL VALERATE - INJECTION
Common Brand Name(s): Delestrogen
Phonetic Pronunciation: (ES-tra-DYE-ol VAL-er-ate)
Information last revised October 2010
What does ESTRADIOL VALERATE - INJ look like?
estradiol valerate 20 mg/mL IM Oil
Delestrogen 20 mg/mL IM Oil
estradiol valerate 40 mg/mL IM Oil
Delestrogen 10 mg/mL IM Oil
Delestrogen 40 mg/mL IM Oil
estradiol valerate 20 mg/mL IM Oil
Delestrogen 40 mg/mL IM Oil
estradiol valerate 40 mg/mL IM Oil
Uses:
This medication is a female estrogen hormone and is usually given to women who no longer produce the amount of estrogen they produced before menopause. It is a very effective treatment for reducing a common menopause symptom (intense feelings of warmth and sweating known as hot flashes). If you need treatment only for vaginal menopause symptoms (e.g., vaginal dryness), products applied directly inside the vagina should be considered before medications that are taken by mouth, absorbed through the skin, or injected. Certain estrogen products may also be used to prevent bone loss (osteoporosis) in people at high risk who cannot take non-estrogen drugs. There are several other medications (e.g., raloxifene, bisphosphonates such as alendronate) that are safe and effective to prevent or treat bone loss. These medicines should be considered for use before estrogen treatment. Certain estrogen products may also be used to treat certain cancers in men and women (e.g., certain types of metastatic breast cancer, prostate cancer) and other conditions as determined by your doctor.
Missed Dose
For the best possible benefit, it is important to receive each scheduled dose of this medication as directed. If you miss a dose, contact your doctor or pharmacist immediately to establish a new dosing schedule.
How To Use
This medication is given by injection into a muscle every 4 weeks. Certain conditions require injections every 1-2 weeks. The dosage depends on your medical condition and response to therapy. Be sure to follow your doctor's exact directions for using this medication. Consult your doctor or pharmacist if you have any questions. If you are giving this medication to yourself at home, learn all preparation and usage instructions from your health care professional. Before using, check this product visually for particles or discoloration. If either is present, do not use the liquid. Learn how to store and discard medical supplies safely. Read the Patient Information Leaflet available from your pharmacist. Consult your doctor or pharmacist if you have any questions.
Drug Interactions
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval. Some products that may interact with this drug include: anastrozole, corticosteroids (e.g., prednisone), exemestane, hydantoins (e.g., phenytoin), warfarin. Also tell your doctor or pharmacist if you are taking any medications which affect certain liver enzymes (CYP450-3A4 enzymes), such as: azole antifungals (e.g., ketoconazole, itraconazole), carbamazepine, cimetidine, macrolide antibiotics (e.g., clarithromycin, erythromycin), phenobarbital, rifamycins (e.g., rifampin), ritonavir, St. John's wort. This product can affect the results of certain lab tests. Make sure laboratory personnel and your doctors know you use this drug.
Notes
Do not share this medication with others. Keep all medical and laboratory appointments. You should have a complete physical examination that includes blood pressure measurements and breast/pelvic examinations at regular intervals (e.g., once a year) or as directed by your doctor. Follow your doctor's instructions on how to examine your own breasts and report any lumps immediately. You should also be regularly screened for cervical cancer (e.g., Pap test) and have periodic mammograms as determined by your doctor. Consult your doctor for more details. Lifestyle changes that help promote healthy bones include increasing weight-bearing exercise, stopping smoking, limiting alcohol, and eating well-balanced meals that contain adequate calcium and vitamin D. Since you may also need to take calcium and vitamin D supplements and make lifestyle changes, consult your doctor for specific advice. Additional lifestyle changes (e.g., reducing stress, eating a low fat/low salt diet, losing weight if you are overweight) to control or prevent high blood pressure, high cholesterol, and diabetes help to prevent heart disease and strokes. Keep your mind active with mental exercises to help prevent dementia. Discuss with your doctor lifestyle changes that might benefit you. You can also manage hot flashes by keeping a cool body temperature (e.g., using a fan, drinking cool beverages, dressing lightly/in layers, avoiding hot/spicy foods). Limiting caffeine and alcohol, exercising regularly, and learning relaxation techniques may help reduce hot flashes. Vaginal lubricants can help lessen discomfort during intercourse.
Overdose
If overdose is suspected, contact your local poison control center or emergency room immediately. US residents can call the US national poison hotline at 1-800-222-1222. Canadian residents should call their local poison control center directly. Symptoms of overdose may include severe nausea/vomiting, or excessive vaginal bleeding.
Precautions
Before using estradiol valerate, tell your doctor or pharmacist if you are allergic to it; or to other estrogen products; or if you have any other allergies. This product may contain inactive ingredients (such as sesame oil), which can cause allergic reactions or other problems. Talk to your pharmacist for more details. This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: undiagnosed abnormal vaginal bleeding, cancer (e.g., breast cancer - also see Uses section), current/history of blood clots, history of stroke or heart attack, liver disease. Before using this medication, tell your doctor or pharmacist your medical history, especially of: family medical history (especially breast lumps and cancer), asthma, diabetes, seizures, migraine headaches, heart disease (high blood pressure, congestive heart failure), kidney disease, low thyroid hormone (hypothyroidism), a certain hormone problem (hypoparathyroidism), abnormal calcium level in the blood, depression, high blood pressure during pregnancy (toxemia), yellowing of eyes or skin (cholestatic jaundice) during pregnancy or with past estrogen use, uterus problems (e.g., fibroids, endometriosis), cholesterol or lipid problems, gallbladder disease, excessive weight gain, certain blood disorder (porphyria). If you will be having surgery or will be confined to a chair or bed for a long period of time (e.g., a long plane flight), notify your doctor beforehand. Special precautions may need to be taken in these circumstances while you are taking this drug. This drug may make you dizzy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages. This drug may cause a patchy darkening of the skin on the face (melasma). Sunlight may intensify this darkening and you may need to avoid prolonged sun exposure and sunlamps. Consult your doctor regarding use of sunscreens and protective clothing. Cigarette smoking can increase the chance of blood clots while taking this medication (especially in women over the age of 35). If this medication is used in children, their growth pattern should be monitored because it may stunt growth. This medication must not be used during pregnancy. It may result in birth defects or cancer later in the child's life. If you become pregnant or think you may be pregnant, tell your doctor immediately. This medication is not effective for preventing a miscarriage and should not be used for this purpose. This medication may pass into breast milk and may have undesirable effects on a nursing infant. Consult your doctor before breast-feeding.
Storage
Consult the product instructions and your pharmacist for storage details. Keep all medications away from children and pets. Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.
Side Effects
See also Warnings. Dizziness, lightheadedness, headache, stomach upset, bloating, nausea, weight changes, increased/decreased interest in sex, and breast tenderness may occur. If any of these effects persist or worsen, notify your doctor promptly. Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Tell your doctor right away if you have any serious side effects, including: mental/mood changes (e.g., severe depression, memory loss), breast lumps, swelling of hands or feet, changes in vaginal bleeding (e.g., spotting, breakthrough bleeding, or prolonged bleeding), unusual vaginal discharge/itching/odor, yellowing of eyes or skin. Get medical help right away if any of these unlikely but very serious side effects occur: calf pain/swelling, sudden severe headache, chest pain, trouble breathing, weakness on one side of the body, slurred speech, vision changes (e.g., change in contact lens fit, loss of vision). Contact lens wearers may find that their eyes are more sensitive or intolerant to lenses while using this medication. A serious allergic reaction to this drug is unlikely, but get medical help right away if it occurs. Symptoms of a serious allergic reaction include: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist. In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Warning
Estrogens given alone and with another hormone (progestin) for replacement therapy after menopause have sometimes caused rare but very serious side effects. Discuss the risks and benefits of hormone treatment and your personal health history with your doctor. Estrogens have been reported to increase the chance of cancer of the uterus (endometrial cancer). Taking a progestin with estrogen decreases this risk. Tell your doctor immediately if you have any unusual vaginal bleeding. Estrogens may also increase your risk of cancer of the ovaries, stroke, dementia, and serious blood clots in the legs. Estrogen given in combination with progestin can infrequently cause heart disease (e.g., heart attacks), stroke, serious blood clots (pulmonary embolism and deep venous thrombosis), dementia, and cancer of the breast. Some of these risks appear to depend on the length of time this drug is used and the amount of estrogen per dose. Therefore, this medication should be used for the shortest possible length of time at the lowest effective dose, so you can obtain the benefits and reduce the chance of serious side effects from long-term treatment. Discuss the details with your doctor and check with him/her regularly (e.g., every 3 to 6 months) to see if you still need to use this medication. Estrogen treatment alone does not appear to increase your risk of breast cancer when used for up to 7 years after menopause. However, talk to your doctor about the risks if you need to take estrogen for a longer period. Products that contain estrogen should not be used to prevent heart disease or dementia. If you use this drug for an extended period, you should have a complete physical exam at regular intervals (e.g., once a year) or as directed by your doctor. See Notes section.