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 right away if you have any unusual vaginal bleeding.
In postmenopausal women, estrogens, taken with or without a progestin, increase the risk of cancer of the breast/ovaries, stroke, dementia, and serious blood clots. When used along with a progestin, estrogens also increase the risk of heart disease (such as heart attacks). Some of these risks appear to depend on the length of time this drug is used and the amount of estrogen per dose. 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 (such as every 3 to 6 months) to see if you still need to take this medication.
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 (such as once a year) or as directed by your doctor. See Notes section.
Before taking this medication, tell your doctor or pharmacist if you are allergic to methyltestosterone or estrogen; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: vaginal bleeding of unknown cause, certain cancers (such as breast cancer, cancer of the uterus or ovaries), blood clotting disorders (such as protein C or protein S deficiency), current/history of blood clots (such as in the legs, eyes, lungs), liver problems, family medical history (especially breast lumps, cancer, blood clots), family or personal history of a certain swelling disorder (angioedema), asthma, diabetes, seizures, migraine headaches, heart disease (such as high blood pressure, heart failure, heart attack), stroke, kidney disease, underactive thyroid (hypothyroidism), a certain hormone problem (hypoparathyroidism), mineral imbalance (low or high calcium blood level), mental/mood disorders (such as dementia, depression), high blood pressure during pregnancy (toxemia), yellowing eyes/skin (cholestatic jaundice) during pregnancy or with past estrogen use, uterus problems (such as uterine fibroids, endometriosis), high blood cholesterol/fat (triglyceride) levels, gallbladder disease, obesity, certain blood disorder (porphyria), lupus.
If you have diabetes, this medication may make it harder to control your blood sugar levels. Monitor your blood sugar regularly as directed by your doctor. Tell your doctor the results and of any symptoms such as increased thirst/urination, weakness, or fainting. Your anti-diabetic medication or diet may need to be adjusted.
This drug may make you dizzy. Alcohol or marijuana (cannabis) can make you more dizzy. Do not drive, use machinery, or do anything that needs alertness until you can do it safely. Limit alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis).
If you are nearsighted or wear contact lenses, you may develop vision problems or trouble wearing your contact lenses. Contact your eye doctor if these problems occur.
This medication may cause blotchy, dark areas on your face and skin (melasma). Sunlight may worsen this effect. Limit your time in the sun. Avoid tanning booths and sunlamps. Use sunscreen and wear protective clothing when outdoors.
Do not smoke cigarettes or use tobacco. Estrogens combined with smoking further increase your risk for stroke, blood clots, high blood pressure, and heart attacks, especially in women older than 35.
If you will be having surgery or will be confined to a chair or bed for a long time (such as on a long plane flight), notify your doctor beforehand. Special precautions may need to be taken in these circumstances (such as stopping this medication) because of the increased risk for blood clots. Consult your doctor for details.
This medication must not be used during pregnancy. It may harm the unborn baby. If you become pregnant or think you may be pregnant, tell your doctor right away.
This medication is not effective for preventing a miscarriage and should not be used for this purpose.
It is unknown if methyltestosterone passes into breast milk. Estrogen passes into breast milk. This medication may harm a nursing infant. Breastfeeding is not recommended while using this medication. Consult your doctor before breastfeeding.
Dizziness, lightheadedness, headache, stomach upset, bloating, nausea, weight changes, increased/decreased interest in sex, or breast tenderness may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.
Remember that this medication has been prescribed because your doctor 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: signs of liver disease (such as nausea/vomiting that doesn't stop, yellowing eyes/skin, stomach/abdominal pain, dark urine), mental/mood changes (such as severe depression, memory loss), breast lumps, swelling of hands/feet, unusual vaginal bleeding (such as spotting, breakthrough bleeding, prolonged/recurrent bleeding), unusual vaginal discharge/itching/odor, changes in skin color, unusual tiredness, worsening of seizures.
Women may experience signs of masculinization (male characteristics) from methyltestosterone. To prevent these changes from becoming permanent, stop taking this medication and tell your doctor right away if any of the following occur: hoarseness, deepening of the voice, facial hair growth, new or worsening acne, an enlarged clitoris, menstrual period changes.
This medication may rarely cause serious (sometimes fatal) problems from blood clots (such as heart attack, stroke, blood clots in the lungs or legs). Get medical help right away if you have: shortness of breath/rapid breathing, chest/jaw/left arm pain, unusual sweating, confusion, sudden dizziness/fainting, pain/swelling/warmth in the groin/calf, sudden/severe headaches, trouble speaking, weakness on one side of the body, sudden vision changes.
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: 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 or at www.fda.gov/medwatch.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
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