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Activella

Generic Name: estradiol and norethindrone (oral) (ESS tra DYE ole and nor ETH in drone)
Brand Name: Activella, Mimvey

Medically reviewed by Drugs.com on Sep 6, 2018 – Written by Cerner Multum

What are Activella?

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

Norethindrone is a form of progesterone, a female hormone important for regulating ovulation and menstruation.

Activella is a combination medicine used to treat menopause symptoms such as hot flashes and vaginal changes, and to prevent osteoporosis (bone loss) in menopausal women.

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

Important Information

You should not use Activella if you have had a hysterectomy, or if you have: undiagnosed vaginal bleeding, liver disease, a bleeding disorder, if you will have major surgery, or if you have ever had a heart attack, a stroke, a blood clot, or cancer of the breast, uterus/cervix, or vagina.

Do not use if you are pregnant.

Activella may increase your risk of developing a condition that may lead to uterine cancer. Report any unusual vaginal bleeding right away.

Using this medicine can increase your risk of blood clots, stroke, heart attack, or cancer of the breast, uterus, or ovaries. Activella should not be used to prevent heart disease, stroke, or dementia.

Before taking this medicine

You should not use this medicine if you are allergic to estradiol or norethindrone, if you have had a hysterectomy, or if you have:

  • unusual vaginal bleeding that has not been checked by a doctor;

  • liver disease;

  • a bleeding disorder;

  • 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.

Do not use Activella if you are pregnant. Tell your doctor right away if you become pregnant during treatment.

Using this medicine 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.

Activella should not be used to prevent heart disease, stroke, or dementia, because this medicine may actually increase your risk of developing these conditions.

Tell your doctor if you have ever had:

Using this medicine may increase your risk of cancer of the breast, uterus, or ovaries. Talk with your doctor about this risk.

Activella can slow breast milk production. Tell your doctor if you are breast-feeding.

How should I take Activella?

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

Estradiol may increase your risk of developing a condition that may lead to uterine cancer. Call your doctor at once if you have any unusual vaginal bleeding while using Activella.

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 Activella.

Your doctor should check your progress on a regular basis (every 3 to 6 months) to determine whether you should continue this treatment. Self-examine your breasts for lumps on a monthly basis and have a mammogram every year while using Activella.

Store at room temperature away from moisture, heat, and light.

What happens if I miss a dose?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

What should I avoid while using Activella?

Avoid smoking. It can greatly increase your risk of blood clots, stroke, or heart attack while using Activella.

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

Activella side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have:

  • 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:

  • nausea, vomiting, bloating, stomach cramps;

  • fluid retention (swelling, rapid weight gain);

  • headache;

  • breast pain;

  • thinning scalp hair; or

  • vaginal itching or discharge, changes in your menstrual periods, breakthrough bleeding.

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 Activella?

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.

Many drugs can affect Activella. This includes prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are listed here. Tell your doctor about all your current medicines and any medicine you start or stop using.

Further information

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.

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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