Tabletas de mesterolona
Pro-Viron
Revisado por Sid DajaniÚltima actualización por Michael Stewart, MRPharmSÚltima actualización 21 Nov 2022
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Nota del autor clínico Michael Stewart 21/11/2019: Pro-Viron® tablets were discontinued in the UK in September 2018. At the time of review there are no branded or generic products containing mesterolone available in the UK. Mesterolone may still be 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.
Mesterolone tablets are prescribed for men.
They work by supplementing your body's natural male sex hormones.
Side-effects of treatment are similar to the masculinisation effect of natural male hormones.
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About mesterolone
Tipo de medicamento | An androgen (a male sex hormone) |
Usado para | Androgen deficiency, and infertility due to low natural hormone levels |
También llamado | Pro-Viron® |
Disponible como | Tabletas |
Mesterolone belongs to the group of medicines known as androgens, which are male sex hormones. It is used to treat disorders in men where the body does not make enough natural androgen. It works by supplementing the amount of male hormone your body produces naturally.
Before taking mesterolone
Some medicines are not suitable for people with certain conditions, and sometimes a medicine may only be used if extra care is taken. For these reasons, before you start taking mesterolone it is important that your doctor knows:
Si tienes problemas de hígado o riñón.
If you have heart problems or high blood pressure (hypertension).
If you have epilepsy or migraine.
Si tienes diabetes.
Si tienes cáncer.
Si está tomando o usando cualquier otro medicamento. 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.
How to take mesterolone
Before you start this treatment, read the manufacturer's printed information leaflet from inside your pack. The leaflet will give you more information about mesterolone tablets.
Take the tablets exactly as your doctor has told you to. To begin with, it is usual to be prescribed 25 mg (one tablet), to be taken three or four times a day. If you need to continue taking the tablets for more than a few months, your doctor may reduce the number of tablets you need to take each day. Your doctor will tell you what dose is right for you and this will also be printed on the label of the pack to remind you.
Swallow the tablet whole with a drink of water. You can take mesterolone before or after meals.
Try to take your doses at the same times each day, as this will help you to remember to take them.
If you forget to take a dose, you should take it when you remember. However, if when you remember, it is nearly time for your next dose then leave out the forgotten dose. Do not take two doses at the same time to make up for a missed dose.
Obteniendo el máximo de tu tratamiento
Try to keep your regular appointments with your doctor so your progress can be monitored. While you are on mesterolone your doctor will want you to have regular blood tests and examinations of your prostate and breasts. This is because the treatment may increase the rate of growth of some types of cancer and your doctor will want to rule these out. Your doctor will explain this to you before you start taking mesterolone, but if you have any concerns during your treatment, make an appointment to speak with your doctor again.
It is unlikely that mesterolone tablets will interact with any medicines you may buy, but it is always wise to check this with a pharmacist first.
The tablets are for you. Never give them to other people, even if their condition appears to be the same as yours. The tablets are not suitable for increasing muscle strength and bodybuilding in healthy men and should not be taken for this reason.
Can mesterolone cause problems?
Along with their useful effects, all medicines can cause unwanted side-effects although not everyone experiences them. The table below lists some of the most common ones associated with mesterolone. You will find a full list in the manufacturer's information leaflet supplied with your medicine. The unwanted effects often improve over the first few days of taking a new medicine, but speak with your doctor or pharmacist if any of the following side-effects continue or become troublesome.
Possible mesterolone side-effects | ¿Qué puedo hacer si experimento esto? |
Headache and other aches and pains | Drink plenty of water and ask your pharmacist to recommend a suitable painkiller. If the pain does not ease, speak with your doctor |
Sensación de malestar (náuseas), dolor de barriga (abdominal) | Stick to simple foods - avoid rich or spicy meals. If the pain does not ease quickly, speak with your doctor straightaway |
Acne, swollen hands or feet, raised blood pressure, increased body hair, breast or prostate problems, increased weight, baldness, mood changes | Si alguno de estos se vuelve problemático, informe a su médico |
Importante: if you experience frequent erections or erections that last for a long time, you must let your doctor know about this. Your treatment will need to be reviewed in order to prevent any injury.
Si experimenta otros síntomas que cree que pueden deberse a este medicamento, hable con su médico o farmacéutico.
How to store mesterolone
Mantenga 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
Información 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.
If you are having an operation or dental treatment tell the person carrying out the treatment which medicines you are taking.
No guardes medicamentos caducados o no deseados. Llévalos a tu farmacia local, donde se encargarán 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.
Preguntas frecuentes
Does mesterolone commonly affect blood pressure?
Mesterolone can sometimes cause a rise in blood pressure. If this becomes a concern or troublesome, you should inform your doctor. Your doctor will also want to know if you have high blood pressure (hypertension) before you start taking mesterolone.
Can mesterolone be used by healthy men to build muscle or for bodybuilding?
No, mesterolone tablets are not suitable for increasing muscle strength and bodybuilding in healthy men and should not be taken for this reason. It is specifically used to treat disorders in men where the body does not make enough natural androgen.
What kind of monitoring will my doctor do while I'm taking mesterolone?
While you are on mesterolone, your doctor will ask you to attend regular appointments for blood tests and examinations of your prostate and breasts. This monitoring is important because the treatment may increase the growth rate of some types of cancer, and your doctor will want to check for this.
What should I do if I experience frequent or prolonged erections while on mesterolone?
If you experience frequent erections or erections that last for a long time, it is important to inform your doctor immediately. Your treatment will need to be reviewed to prevent any potential injury caused by these effects.
Can I take mesterolone at any time of day?
You can take mesterolone before or after meals. The most important thing is to try and take your doses at the same times each day, as this helps you to remember them and ensures consistent treatment.
Is it safe to store mesterolone in my bathroom cabinet?
Mesterolone should be stored in a cool, dry place, away from direct heat and light. Ensure all medicines are kept out of the reach and sight of children.
Lecturas adicionales y referencias
- Medicamentos Completo BNF 89ª Edición; Asociación Médica Británica y Sociedad Real de Farmacia de Gran Bretaña, Londres.
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.
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