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(ess' troe jen)Estrogen increases the risk that you will develop endometrial cancer (cancer of the lining of the uterus [womb]). The longer you take estrogen, the greater the risk that you will develop endometrial cancer. If you have not had a hysterectomy (surgery to remove the uterus), you should be given another medication called a progestin to take with estrogen. This may decrease your risk of developing endometrial cancer, but may increase your risk of developing certain other health problems, including breast cancer. Before you begin taking estrogen, tell your doctor if you have or have ever had cancer and if you have unusual vaginal bleeding. Call your doctor immediately if you have abnormal or unusual vaginal bleeding during your treatment with estrogen. Your doctor will watch you closely to help ensure you do not develop endometrial cancer during or after your treatment. In a large study, women who took estrogen with progestins had a higher risk of heart attacks, strokes, blood clots in the lungs or legs, breast cancer, and dementia (loss of ability to think, learn, and understand). Women who take estrogen alone may also have a higher risk of developing these conditions. Tell your doctor if you smoke or use tobacco, if you have had a heart attack or a stroke in the past year, and if you or anyone in your family has or has ever had blood clots or breast cancer. Also tell your doctor if you have or have ever had high blood pressure, high blood levels of cholesterol or fats, diabetes, heart disease, lupus (a condition in which the body attacks its own tissues causing damage and swelling), breast lumps, or an abnormal mammogram (x-ray of the breast used to find breast cancer). The following symptoms can be signs of the serious health conditions listed above. Call your doctor immediately if you experience any of the following symptoms while you are taking estrogen: sudden, severe headache; sudden, severe vomiting; speech problems; dizziness or faintness; sudden complete or partial loss of vision;double vision; weakness or numbness of an arm or a leg; crushing chest pain or chest heaviness; coughing up blood; sudden shortness of breath; difficulty thinking clearly, remembering, or learning new things; breast lumps or other breast changes; discharge from nipples; or pain, tenderness, or redness in one leg. You can take steps to decrease the risk that you will develop a serious health problem while you are taking estrogen. Do not take estrogen alone or with a progestin to prevent heart disease, heart attacks, strokes, or dementia. Take the lowest dose of estrogen that controls your symptoms and only take estrogen as long as needed. Talk to your doctor every 3 to 6 months to decide if you should take a lower dose of estrogen or should stop taking the medication. You should examine your breasts every month and have a mammogram and a breast exam performed by a doctor every year to help detect breast cancer as early as possible. Your doctor will tell you how to properly examine your breasts and whether you should have these exams more often than once a year because of your personal or family medical history. Tell your doctor if you are having surgery or will be on bed rest. Your doctor may tell you to stop taking estrogen 4 to 6 weeks before the surgery or bed rest to decrease the risk that you will develop blood clots. Talk to your doctor regularly about the risks and benefits of taking estrogen.
Before taking estrogen,
- tell your doctor and pharmacist if you are allergic to any brand of oral estrogen, any other estrogen products, any other medications, or any of the ingredients in estrogen tablets. If you will be taking Estrace® brand tablets, tell your doctor and pharmacist if you are allergic to aspirin or tartrazine (a food color additive). Ask your pharmacist or check the manufacturer's patient information for a list of the inactive ingredients in the brand of estrogen tablets you plan to take.
- tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, and nutritional supplements you are taking or plan to take. Be sure to mention any of the following: amiodarone (Cordarone, Pacerone); certain antifungals such as itraconazole (Sporanox) and ketoconazole (Nizoral); aprepitant (Emend); carbamazepine (Carbatrol, Epitol, Tegretol); cimetidine (Tagamet); clarithromycin (Biaxin); cyclosporine (Neoral, Sandimmune); dexamethasone (Decadron, Dexpak); diltiazem (Cardizem, Dilacor, Tiazac, others); erythromycin (E.E.S, Erythrocin);fluoxetine (Prozac, Sarafem); fluvoxamine (Luvox); griseofulvin (Fulvicin, Grifulvin, Gris-PEG); lovastatin (Altocor, Mevacor); medications for human immunodeficiency virus (HIV) or acquired immunodeficiency syndrome (AIDS) such as atazanavir (Reyataz), delavirdine (Rescriptor), efavirenz (Sustiva), indinavir (Crixivan), lopinavir (in Kaletra), nelfinavir (Viracept), nevirapine (Viramune), ritonavir (Norvir, in Kaletra), and saquinavir (Fortovase, Invirase); medications for thyroid disease; nefazodone; phenobarbital; phenytoin (Dilantin, Phenytek); rifabutin (Mycobutin); rifampin (Rifadin, Rimactane, in Rifamate); sertraline (Zoloft); troleandomycin (TAO); verapamil (Calan, Covera, Isoptin, Verelan); and zafirlukast (Accolate). Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
- tell your doctor what herbal products you are taking, especially St. John's wort.
- tell your doctor if you have or have ever had yellowing of the skin or eyes during pregnancy or during your treatment with an estrogen product, endometriosis (a condition in which the type of tissue that lines the uterus [womb] grows in other areas of the body), uterine fibroids (growths in the uterus that are not cancer), asthma, migraine headaches, seizures, porphyria (condition in which abnormal substances build up in the blood and cause problems with the skin or nervous system), very high or very low levels of calcium in your blood, or thyroid, liver, kidney, gallbladder, or pancreatic disease.
- tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking estrogen, call your doctor immediately.
- talk to your doctor about the risks and benefits of taking estrogen if you are 65 years of age or older. Older women should not usually take oral estrogen unless they are also taking other hormones. Oral estrogen taken without other hormones is not as safe or effective as other medications that can be used to treat the same condition.
- if you are taking estrogen to prevent osteoporosis, talk to your doctor about other ways to prevent the disease such as exercising and taking vitamin D and/or calcium supplements.
- breast pain or tenderness
- upset stomach
- weight gain or loss
- leg cramps
- burning or tingling in the arms or legs
- tight muscles
- hair loss
- unwanted hair growth
- spotty darkening of the skin on the face
- difficulty wearing contact lenses
- swelling, redness, burning, itching, or irritation of the vagina
- vaginal discharge
- change in sexual desire
- cold symptoms
- bulging eyes
- sore throat, fever, chills, cough, and other signs of infection
- pain, swelling, or tenderness in the stomach
- loss of appetite
- yellowing of the skin or eyes
- joint pain
- movements that are difficult to control
- rash or blisters
- swelling of the eyes, face, tongue, throat, hands, arms, feet, ankles, or lower legs
- difficulty breathing or swallowing