What is Aromasin: Uses, Warnings & Interactions

Updated May 14, 2025  •  Published Dec 30, 2020

Aromasin overview

BRAND NAMES:

  • Aromasin

Generic Names:

  • Exemestane

Uses:

  • Treats breast cancer in women who have stopped menstruating (postmenopausal).

Therapeutic Classes:

  • Antineoplastic Agent, Endocrine-Metabolic Agent

Forms:

  • Tablet

How it’s taken:

  • By mouth

What is Aromasin used for?

What form(s) does Aromasin come in

  • Tablet

What are common Aromasin doses?

  • Tablet 25MG

Common Aromasin prescriptions

  • Aromasin
    25mg tablet

How to take Aromasin

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Oral routeIt is best to take this medicine with food or milk.

  • Read and follow the patient instructions that come with this medicine. Talk to your doctor or pharmacist if you have any questions.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Read and follow the patient instructions that come with this medicine. Talk to your doctor or pharmacist if you have any questions.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

  • Oral routeIt is best to take this medicine with food or milk.

What to do if you miss a dose of Aromasin

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

  • Oral routeAsk your pharmacist, doctor, or health caregiver about the best way to dispose of any leftover medicine after you have finished your treatment. You will also need to throw away old medicine after the expiration date has passed.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

Aromasin contraindications

  • This medicine is not right for everyone. Do not use it if you had an allergic reaction to exemestane.

Aromasin warnings

  • Pregnancy after menopause is not likely, but if you think you could be pregnant, tell your doctor. This medicine could harm an unborn baby. If you are a woman who can bear children, your doctor may give you a pregnancy test 7 days before you start using this medicine to make sure you are not pregnant. Use an effective form of birth control during treatment and for 1 month after the last dose.

  • Do not breastfeed during treatment and for 1 month after the last dose.

  • Tell your doctor if you have bone marrow problems (such as lymphocytopenia) or bone problems (such as osteoporosis).

  • This medicine may cause weaker bones, which may lead to osteoporosis and fracture.

  • Oral routeMedicines used to treat cancer are very strong and can have many side effects. Before receiving this medicine, make sure you understand all the risks and benefits. It is important for you to work closely with your doctor during your treatment.

  • Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

  • Yellowing of the skin or the whites of your eyes.

Aromasin interactions

  • Do not use exemestane with hormone medicine that contains estrogen, including birth control pills or patches.

  • Some foods and medicines can affect how exemestane works. Tell your doctor if you are using carbamazepine, phenobarbital, phenytoin, rifampicin, or St John's wort.

  • This medicine may make you bleed, bruise, or get infections more easily. Take precautions to prevent illness and injury. Wash your hands often.

  • This medicine may decrease bone mineral density when used for a long time. A low bone mineral density can cause weak bones or osteoporosis. If you have any questions about this, talk to your doctor.

  • Stop taking this medicine and check with your doctor right away if you start having chest pains or shortness of breath. This medicine may cause some people to have heart problems, but this does not occur very often.

  • Your doctor will check your progress and the effects of this medicine at regular visits. Keep all appointments. Blood tests may be needed to check for unwanted effects. It is important for women to have regular gynecologic check-ups while taking this medicine.

Aromasin side effects

Serious Side Effects

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Chest pain, trouble breathing, uneven heartbeat

  • Unusual or severe bone or back pain

  • Hair loss.

  • Headache.

  • Hot flashes.

  • Increased sweating.

  • Joint, muscle, or bone pain.

  • Loss of appetite.

  • Nausea, vomiting, constipation, diarrhea, stomach pain, or stomach upset.

  • Runny or stuffy nose.

  • Trouble with sleeping.

Less Serious Side Effects

  • Trouble sleeping

  • Increased sweating

  • Headache, nausea

  • Tiredness

  • Warmth or redness in your face, neck, arms, or upper chest

  • Joint pain