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Methyldopa for high blood pressure

Aldomet

Take methyldopa at the same times each day. It is usual to be prescribed two or three doses to take a day.

Methyldopa can make you feel sleepy, particularly during the first two or three days. Do not drive and do not use tools or machines while affected.

Continue to take methyldopa tablets until you are advised otherwise by your doctor.

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About methyldopa

Tipo de medicamento

A centrally acting antihypertensive medicine

Usado para

Presión arterial alta (hipertensión)

También llamado

Aldomet®

Disponible como

Comprimidos

La mayoría de las personas con presión arterial alta (hipertensión) do not feel unwell, but it is important that your high blood pressure is treated even if you feel fine. This is because high blood pressure can be damaging to your blood vessels and can put a strain on your heart. By lowering your blood pressure, methyldopa reduces your cardiovascular risk.

Methyldopa is one of the medicines of choice for treating high blood pressure in pregnancy. When taken during pregnancy, treatment with methyldopa is reviewed soon after the birth of the baby, as other treatment options are then likely to be more suitable.

Some 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 methyldopa it is important that your doctor knows:

  • Si tienes algún problema con el funcionamiento de tu hígado, o algún problema con el funcionamiento de tus riñones.

  • If you have ever had a depressive illness.

  • If you have been told you have any of the following rare conditions: an adrenaline-producing growth called a phaeochromocytoma or a paraganglioma, or an inherited blood disorder called porphyria.

  • 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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  • Before you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about methyldopa and will provide you with a full list of the side-effects which you may experience from taking it.

  • Take methyldopa exactly as your doctor tells you to. It is usual to start by taking 250 mg two or three times daily. Your doctor may increase your dose after a few days if it is necessary. Each time you see your doctor you will be told how many tablets to take for each dose, and this information will also be printed on the label of the pack of tablets to remind you about what the doctor said to you.

  • Try to take your doses at the same times of day each day, as this will help you to remember to take them regularly. You can take your doses either before or after food. Swallow the tablet with a drink of water.

  • If you forget to take a dose, take it as soon as you remember. Try to take the correct number of doses each day but do not take two doses at the same time to make up for a missed dose.

  • Try to keep your regular appointments with your doctor so your progress can be monitored. Your doctor will want you to have blood tests from time to time to make sure your liver is working properly.

  • There are three strengths of methyldopa tablet available - 125 mg, 250 mg and 500 mg. Each time you collect a fresh supply of tablets it is a good idea to check to make sure you receive the strength you are expecting. If you have any questions, please ask your pharmacist to advise you.

  • Your doctor may give you dietary and lifestyle advice about eating a healthy diet, not smoking, and taking regular exercise. If so, it is important that you follow the advice you are given.

  • Drinking alcohol while you are on methyldopa is not recommended. It can increase the chance that you will experience side-effects, such as feeling sleepy or dizzy.

  • If you buy any medicines 'over the counter', please check with a pharmacist that they are suitable for you to take with methyldopa. Some medicines, such as some anti-inflammatory painkillers, can interfere with the way methyldopa works.

  • If you are due to have an operation or dental treatment, tell the person carrying out the treatment that you are taking methyldopa. This is because some anaesthetics can affect your blood pressure. Also, before having any medical tests, tell the person carrying out the test that you are taking methyldopa, as the results of some tests can be affected by it.

  • Continue to take methyldopa tablets until you are advised otherwise by your doctor.

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Along with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains some of the common ones associated with methyldopa. 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.

Common methyldopa side-effects

¿Qué puedo hacer si experimento esto?

Feeling sleepy, weak, or tired

This can happen during the first few days of treatment and if your dose is increased. Increase your evening dose first. Do not drive and do not use tools or machines while affected. Do not drink alcohol

Dolor de cabeza

Bebe mucha agua y pide a tu farmacéutico que te recomiende un analgésico adecuado. Si los dolores de cabeza continúan, informa a tu médico

Importante: if you develop a high temperature which you can't explain, or if you notice any yellowing of your skin or of the whites of your eyes (jaundice), speak with your doctor as soon as possible. Occasionally, some people taking methyldopa have had blood or liver problems and your doctor will want you to have a blood test to check for these.

Si experimenta cualquier otro síntoma que crea que puede deberse a las tabletas, hable con su médico o farmacéutico para obtener más consejos.

  • 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

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 sitio web de la Tarjeta Amarilla.

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Lecturas adicionales y referencias

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Historial del artículo

La información en esta página está escrita y revisada por pares por clínicos calificados.

  • Próxima revisión: 15 Ene 2028
  • 15 Jan 2025 | Última versión

    Última actualización por

    Michael Stewart, MRPharmS

    Revisado por pares por

    Sid Dajani
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