Exemestane para el cáncer de mama
Aromasin
Revisado por pares por Sid DajaniÚltima actualización por Michael Stewart, MRPharmSLast updated 27 Ene 2023
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Take one 25 mg exemestane tablet a day. Swallow the tablet with a drink of water after a meal.
The most common side-effects are hot flushes, feeling sick (nausea), joint pain, and feeling tired. These occur in up to 1 in 4 women when first taking exemestane. The side-effects will settle as your body adjusts to the medicine.
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About exemestane
Tipo de medicamento | An aromatase inhibitor hormone antagonist |
Usado para | Breast cancer in women |
También llamado | Aromasin® |
Disponible como | Comprimidos |
Exemestane is a hormonal cáncer de mama treatment. Some breast cancers need the hormone oestrogen to grow. In women who have been through the menopause, the main source of oestrogen is through the change of sex hormones, called androgens, into oestrogen. An enzyme called 'aromatase' is needed for this change to occur. Exemestane works by blocking (inhibiting) this enzyme. This reduces the amount of oestrogen in your body, which slows the growth of the cancer cells.
Before taking exemestane
Volver al contenidoSome medicines are not suitable for people with certain conditions, and sometimes a medicine can only be used if extra care is taken. For these reasons, before you start taking exemestane it is important that your doctor knows:
If you have not yet gone through the menopause, or if there is a possibility you could be pregnant.
Si tienes algún problema con el funcionamiento de tu hígado, o algún problema con el funcionamiento de tus riñones.
If you have a loss of bone density, or 'brittle bones' - a condition known as osteoporosis.
Si alguna vez has tenido una reacción alérgica a un medicamento.
Si está tomando otros medicamentos. Esto incluye cualquier medicamento que esté tomando y que esté disponible para comprar sin receta, así como medicamentos herbales y complementarios.
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How to take exemestane
Volver al contenidoBefore you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about exemestane and it will also provide you with a full list of the side-effects which you could experience from taking it.
Take one 25 mg tablet of exemestane each day, exactly as your doctor tells you to.
Swallow the tablet with a drink of water, preferably after a meal.
You can take exemestane with whichever meal of the day you find easiest to remember, but try to take your doses with the same meal each day. This will help you to remember to take exemestane regularly.
If you forget to take a dose at your usual time, take it (with a snack or something to eat) as soon as you remember. If you do not remember until the following day, leave out the forgotten dose from the previous day and take the dose that is due as normal. Do not take two doses on the same day to make up for a missed dose.
Continue to take the tablets regularly each day until your doctor tells you otherwise. You may need to take exemestane for a number of years.
Obteniendo el máximo de tu tratamiento
Volver al contenidoTry to keep your regular appointments with your doctor and clinic. This is so your doctor can check on your progress. Exemestane lowers the levels of female hormones in your body, which can reduce the strength of your bones. You may need to have bone density tests to check for this before and during your treatment.
If you are due to have an operation or any dental treatment, tell the person carrying out the treatment that you are taking exemestane.
Si compras algún medicamento 'sin receta', consulta con un farmacéutico para asegurarte de que sea seguro tomarlo junto con tus medicamentos recetados.
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Can exemestane cause problems?
Volver al contenidoAlong with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains the most common ones associated with exemestane. The best place to find a full list of the side-effects which can be associated with your medicine, is from the manufacturer's printed information leaflet supplied with the medicine. Alternatively, you can find an example of a manufacturer's information leaflet in the reference section below. Speak with your doctor or pharmacist if any of the following become troublesome.
Very common exemestane side-effects (these affect more than 1 in 10 women) | ¿Qué puedo hacer si experimento esto? |
Hot flushes, sweating | Try to keep cool by wearing light, airy clothes |
Sintiéndose cansado, débil o mareado | No conduzca ni utilice herramientas o máquinas mientras esté afectado |
Feeling sick (nausea), tummy (abdominal) pain | Mantente en comidas simples - evita alimentos grasos o picantes |
Headache, joint and muscle pain | Drink plenty of water and ask a pharmacist to recommend a suitable painkiller. If it continues, let your doctor know |
Difficulty sleeping, feeling depressed | Hable con su médico si es problemático |
Cambios en algunos análisis de sangre | Su médico verificará esto |
If you experience other symptoms which you think may be due to the tablets, speak with your doctor or pharmacist for further advice.
How to store exemestane
Volver al contenidoMantenga todos los medicamentos fuera del alcance y la vista de los niños.
Almacenar en un lugar fresco y seco, lejos del calor y la luz directos.
Información importante sobre todos los medicamentos
Volver al contenidoInformación importante sobre todos los medicamentos
Nunca tome más de la dosis prescrita. Si sospecha que usted u otra persona podría haber tomado una sobredosis de este medicamento, acuda al departamento de accidentes y emergencias de su hospital local. Lleve el envase con usted, incluso si está vacío.
Este medicamento es para ti. Nunca lo des a otras personas, incluso si su condición parece ser la misma que la tuya.
No guardes medicamentos caducados o no deseados. Llévalos a tu farmacia local, que se encargará de desecharlos por ti.
Si tienes alguna pregunta sobre este medicamento, consulta a tu farmacéutico.
Informar efectos secundarios de un medicamento o vacuna
Si experimenta efectos secundarios, puede reportarlos en línea a través de Yellow Card website.

¿Inseguro sobre mezclar medicamentos?
Verifica posibles interacciones entre medicamentos, suplementos y alimentos antes de tomarlos juntos.
Lecturas adicionales y referencias
- Manufacturer's PIL, Aromasin® Tablets; Pfizer Limited, The electronic Medicines Compendium. Dated January 2022.
- Medicamentos Completos BNF 89ª Edición; Asociación Médica Británica y Sociedad Real de Farmacia de Gran Bretaña, Londres.
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Historial del artículo
La información en esta página está escrita y revisada por pares por clínicos calificados.
Próxima revisión: 26 Jul 2027
27 Ene 2023 | Última versión

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