Capsulas de Danazol
Revisado por pares por Sid DajaniÚltima actualización por Michael Stewart, MRPharmSÚltima actualización 26 Nov 2024
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Clinical author's note Michael Stewart 26/11/2024: Danol® capsules have been discontinued in the UK. At the time of review there are no licensed products containing danazol available in the UK. However danazol is available as a specially manufactured medicine or as an imported medicine. Products are still available in other countries. This medicine leaflet is based on medical information available in the UK at the time of writing and is left here for reference purposes. Please also refer to the manufacturer's information supplied with your medicine.
Start taking danazol on the first day of your period unless you have been told otherwise. You can take the capsules either before or after meals.
It is important that you do not become pregnant while on danazol. Follow your doctor's advice about suitable contraception.
En este artículo:
Selecciones de videos para Tratamiento del desequilibrio hormonal
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About danazol
Tipo de medicamento | A gonadotrophin inhibitor |
Usado para | Endometriosis; breast cyst pain |
También llamado | Danol® (discontinued); Cyclomen® (in Canada) |
Disponible como | Cápsulas |
Danazol works by altering the levels of some of your body's hormones. It is used to treat a number of different conditions.
Endometriosis is a condition where tissue that normally lines the inside of your womb (uterus) is found elsewhere in your body, often in the pelvic area or abdomen. It can cause painful periods and persistent pain in the pelvic area, as well as other symptoms. By altering the levels of your hormones, danazol will help to relieve these symptoms.
Danazol is also prescribed to ease severe pain and tenderness associated with breast cyst disease (where other treatments have proved unhelpful). Breast cysts are small lumps which are found in the breast, but which are not cancerous.
In addition to the two conditions above, danazol is also prescribed by specialist doctors for people with a condition known as hereditary angio-oedema (although it is not licensed for this condition). If you have been prescribed it for this reason, please speak with your doctor if you have any questions about your treatment.
Before taking danazol
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 danazol it is important that your doctor knows:
Si estás embarazada, intentando tener un bebé o amamantando.
Si tienes una afección cardíaca.
If you have any vaginal bleeding other than your regular period.
If you have ever had an unwanted blood clot (thrombosis), or stroke.
If you have any of the following conditions: epilepsy, diabetes (diabetes mellitus), high blood pressure, migraine, or a blood fat (lipid) disorder.
Si tienes algún problema con el funcionamiento de tu hígado, o algún problema con el funcionamiento de tus riñones.
If you have either of the following blood disorders: polycythaemia or porphyria.
If you know you have a type of cancer which is affected by hormones.
Si está tomando o usando otros medicamentos. Esto incluye cualquier medicamento que esté tomando y que esté disponible para comprar sin receta, así como medicamentos herbales y complementarios.
Si alguna vez has tenido una reacción alérgica a un medicamento.
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How to take danazol
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 danazol, and will also provide you with a full list of side-effects which you could experience from taking it.
You should start taking danazol on the first day of your next period unless you have been told otherwise.
Your doctor will tell you how many capsules to take each day, and when you should take them. As a guide, for the treatment of endometriosis or breast pain, danazol is usually taken 2-4 times daily for 3-6 months. Take the capsules exactly as your doctor tells you to. Your dose will be printed on the label of the pack to remind you about what the doctor said to you.
Swallow the capsules whole with a drink of water - do not chew or open them before you swallow.
You can take danazol capsules either before or after meals, but try to take your doses at the same times each day, as this will help you to remember to take them regularly.
Si olvida tomar una dosis, tómela tan pronto como lo recuerde (a menos que esté cerca la hora de su próxima dosis, en cuyo caso omita la dosis olvidada). No tome dos dosis juntas para compensar una dosis olvidada.
Obteniendo el máximo de tu tratamiento
Volver al contenidoTry to keep your regular appointments with your doctor. This is so your doctor can check on your progress. Your doctor may want you to have some blood tests during this treatment.
It is important that you do not become pregnant while you are on danazol. If appropriate, you and your partner should use a non-hormonal method of contraception, such as a condom. This is because hormonal methods (such as 'the pill' or 'mini pill') will not work. Speak with your doctor if you need further advice about what methods of contraception are suitable for you to use.
It is best not to drink alcohol while you are on danazol. This is because drinking alcohol while taking danazol could make you feel sick or short of breath.
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Can danazol 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 some of the ones associated with danazol. You will find a full list in the manufacturer's information leaflet supplied with your medicine. The unwanted effects often improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist if any of the following continue or become troublesome.
Danazol side-effects | ¿Qué puedo hacer si experimento esto? |
Feeling sick (nausea), stomach pain | Stick to simple foods (avoid rich or spicy meals) |
Feeling dizzy or tired, eyesight changes | If this happens, do not drive and do not use tools or machines while affected. Let your doctor know about any eyesight changes |
Dolor de cabeza, otros dolores y molestias | Ask your pharmacist to recommend a suitable painkiller. If the headache is severe or continues, speak with your doctor |
Increased growth of hair (particularly on your body or face), voice changes, hair loss similar to male baldness | Speak with your doctor about this lo antes posible. An alternative treatment may be more suitable for you |
Acne, skin rash, muscle cramps, mood changes, changes in your desire for sex, increased appetite and weight changes, irregular menstrual periods, vaginal dryness and irritation, hot flushes, reduced breast size, a feeling that your heart is racing | Si alguno de estos se vuelve problemático, hable con su médico |
Importante: if you experience any of the following rare but possibly serious symptoms, please speak with your doctor straightaway:
A severe headache and sickness (nausea and vomiting).
Cualquier amarillamiento de su piel o del blanco de sus ojos (ictericia).
Any painful swelling of your arms or legs, or sudden chest pain.
Any bruising that you can't explain. This could be a sign of a blood disorder.
Si experimenta cualquier otro síntoma que crea que puede deberse a las cápsulas, por favor hable con su médico o farmacéutico para obtener más consejos.
How to store danazol
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 de inmediato al departamento de accidentes y emergencias de su hospital local. Lleve el envase con usted, incluso si está vacío.
Si compras algún medicamento, siempre consulta con un farmacéutico que sean adecuados para tomar con tus otros medicamentos.
If you are due to have an operation or any dental treatment, please tell the person carrying out the treatment which medicines you are taking.
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 Sitio web de Yellow Card.

¿Inseguro sobre mezclar medicamentos?
Verifica posibles interacciones entre medicamentos, suplementos y alimentos antes de tomarlos juntos.
Lecturas adicionales y referencias
- Medicamentos Completos BNF 89ª Edición; Asociación Médica Británica y Sociedad Real de Farmacia de Gran Bretaña, Londres.
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Sobre el autorVer biografía completa

Michael Stewart, MRPharmS
Gerente de Revisión de Folletos de Medicamentos – Contratista, Farmacéutico
BPharm (Hons), MRPharmS
Michael es un farmacéutico comunitario que ejerce en Midlands y South Yorkshire con más de 20 años de experiencia asesorando sobre medicamentos y condiciones médicas. Tiene una sólida formación en capacitación en atención médica, habiendo producido e impartido cursos de formación para equipos de farmacia y personal de entornos de atención residencial, incluidas enfermeras. También ha contribuido a juntas asesoras de farmacia para la gestión de condiciones de baja gravedad en la comunidad.
Acerca del revisor

Sid Dajani
Sultan Dajani se graduó en la Escuela de Farmacia de Londres en 1994 y se convirtió en el miembro más joven elegido para el consejo de la Sociedad Real de Farmacia desde su fundación en 1842.
Historial del artículo
La información en esta página está escrita y revisada por pares por clínicos calificados.
Next review due: 26 Nov 2027
26 Nov 2024 | Última versión

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