Many medications can cause side effects. A side effect is an unwanted response to a medication when it is taken in normal doses. Side effects can be mild or severe, temporary or permanent.

The side effects listed below are not experienced by everyone who takes Aromasin (Exemestane). If you are concerned about side effects, discuss the risks and benefits of Aromasin (Exemestane) with your doctor.

The following side effects have been reported by at least 1% of people taking Aromasin (Exemestane). Many of these side effects can be managed, and some may go away on their own over time.

Contact your doctor if you experience these side effects and they are severe or bothersome. Your pharmacist may be able to advise you on managing side effects.

• abdominal or stomach pain
• burning, tingling, or prickly sensations
• Constipation
• decreased sense of touch
• Diarrhea
• dizziness
• general feeling of tiredness or weakness
• headache
• hot flashes
• increased appetite
• increased sweating
• itching
• joint pain
• loss of appetite
• loss of hair
• muscle pain or cramps
• nausea
• rash
• trouble sleeping
• weight gain

Although most of the side effects listed below don't happen very often, they could lead to serious problems if you do not seek medical attention.

Check with your doctor as soon as possible if any of the following side effects occur:

• anxiety
• back pain
• bone pain
• flu-like symptoms (e.g., cough, hoarseness, sore throat, Fever or chills)
• increased blood pressure
• increased cholesterol
• signs of Carpal Tunnel Syndrome (pain or burning in the hands or wrists)
• signs of Depression (e.g., poor concentration, changes in weight, changes in sleep, decreased interest in activities, thoughts of suicide)
• signs of infection (symptoms may include fever or chills, severe diarrhea, shortness of breath, prolonged dizziness, headache, stiff neck, weight loss, or listlessness)
• signs of a urinary tract infection (e.g., difficult or painful urination, blood in the urine, frequent urge to urinate, lower back or side pain)
• swelling of hands, ankles, feet, or lower legs
• symptoms of liver damage (e.g., yellow skin or eyes, dark urine, clay-coloured stools, loss of appetite, nausea and vomiting, or itching)
• unexplained broken bones
• vaginal bleeding

Stop taking the medication and seek immediate medical attention if any of the following occur:

• signs of a Heart Attack (e.g., chest pain or pressure, pain extending through shoulder and arm, nausea and vomiting, sweating)
• signs of a blood clot in blood vessels, such as sudden vision change or dizziness, chest pain, pain and swelling in one leg muscle
• sudden development of breathing problems (e.g., shortness of breath, trouble breathing, wheezing, tightness in chest, or fast or irregular breathing)
• signs of a Anaphylaxis (severe allergic reaction) (e.g., Hives; difficulty breathing; swelling of the face, lips, tongue, or throat)
• signs of bleeding in the stomach or intestines (e.g., dark and tarry stools, blood coming from rectum, vomiting blood or material that looks like coffee grounds, fast heartbeat, weakness or fainting)

Some people may experience side effects other than those listed. Check with your doctor if you notice any symptom that worries you while you are taking Aromasin (Exemestane).

Each round, biconvex, off-white-to-slightly-gray tablet, printed on one side with the number "7663" in black, contains 25 mg of Aromasin (Exemestane). Nonmedicinal ingredients: carnauba wax, cetyl esters wax, crospovidone, hypromellose, iron oxides, magnesium carbonate, magnesium stearate, mannitol, methyl-p-hydroxybenzoate, microcrystalline cellulose, polyethyleneglycol 6000, polysorbate 80, polyvinyl alcohol, shellac, silicon dioxide, simethicone, sodium starch glycolate, sucrose, talc, and titanium dioxide.

Do not take Aromasin (Exemestane) if you:

• are allergic to Aromasin (Exemestane) or any ingredients of Aromasin (Exemestane)
• have not entered menopause

There may be an interaction between Aromasin (Exemestane) and any of the following:

• Bosentan
• Carbamazepine
• Dabrafenib
• Deferasirox
• Dexamethasone
• efavirenz
• Enzalutamide
• Eslicarbazepine
• estrogens (e.g., conjugated estrogen, Estradiol, ethinyl estradiol)
• etravirine
• fosphenytoin
• lumacaftor
• Methadone
• Modafinil
• Phenytoin
• primidone
• rifampin
• St. John's wort
• Sarilumab
• siltuximab
• Tocilizumab

If you are taking any of these medications, speak with your doctor or pharmacist. Depending on your specific circumstances, your doctor may want you to:

• stop taking one of the medications,
• change one of the medications to another,
• change how you are taking one or both of the medications, or
• leave everything as is.

An interaction between two medications does not always mean that you must stop taking one of them. Speak to your doctor about how any drug interactions are being managed or should be managed.

Medications other than those listed above may interact with Aromasin (Exemestane). Tell your doctor or prescriber about all prescription, over-the-counter (non-prescription), and herbal medications you are taking. Also tell them about any supplements you take. Since caffeine, alcohol, the Nicotine from cigarettes, or street drugs can affect the action of many medications, you should let your prescriber know if you use them.

Before you begin taking a medication, be sure to inform your doctor of any medical conditions or Allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should take Aromasin (Exemestane).

Heart problems: Aromasin (Exemestane) may cause an increase in the risk of heart disease. If you have a history of heart disease, heart attack or Angina, discuss with your doctor how Aromasin (Exemestane) may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Aromasin (Exemestane), and whether any special monitoring is needed.

If you experience symptoms of heart problems such as chest pain, shortness of breath, and swelling of the wrists or legs, contact your doctor immediately.

Kidney function: If you have reduced kidney function or Kidney Disease, discuss with your doctor how Aromasin (Exemestane) may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Aromasin (Exemestane), and whether any special monitoring is needed.

Liver function: If you have reduced liver function or liver disease, discuss with your doctor how Aromasin (Exemestane) may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Aromasin (Exemestane), and whether any special monitoring is needed.

Osteoporosis: Aromasin (Exemestane) may cause a decrease in the density and strength of bones. If you are at risk for developing osteoporosis, discuss with your doctor how Aromasin (Exemestane) may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Aromasin (Exemestane), and whether any special monitoring is needed.

Pre-menopause: Aromasin (Exemestane) does not affect the estrogen that is produced by the ovaries (the main source of estrogen before menopause). The safety and effectiveness of Aromasin (Exemestane) has not been established for women who have not reached menopause. For these reasons, Aromasin (Exemestane) is not recommended to treat breast cancer occurring in women who have not reached menopause.

Stomach problems: Aromasin (Exemestane) may increase the risk of stomach problems, including the development of ulcers. If you are taking medications that may cause ulcers, such as nonsteroidal anti-inflammatory medications (NSAIDs), or you have a history of stomach problems, discuss with your doctor how Aromasin (Exemestane) may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Aromasin (Exemestane), and whether any special monitoring is needed.

Pregnancy: Although the effect of Aromasin (Exemestane) is unclear, there is some evidence suggesting that taking Aromasin (Exemestane) during pregnancy may cause harm to an unborn baby. Aromasin (Exemestane) should not be used during pregnancy unless the benefits outweigh the risks. If you become pregnant while taking Aromasin (Exemestane), contact your doctor immediately.

Breast-feeding: It is not known if Aromasin (Exemestane) passes into breast milk. If you are a breast-feeding mother and are taking Aromasin (Exemestane), it may affect your baby. Talk to your doctor about whether you should continue breast-feeding.

Children: The safety and effectiveness of using Aromasin (Exemestane) have not been established for children.