Methyldopa for high blood pressure
Aldomet
Peer reviewed by Sid DajaniLast updated by Michael Stewart, MRPharmSLast updated 15 Jan 2025
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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 |
Utilizado para | Presión arterial alta (hipertensión) |
También llamado | Aldomet® |
Disponible como | Tabletas |
Most people with high blood pressure (hypertension) 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.
Before taking methyldopa
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 tiene algún problema con el funcionamiento del hígado o de los riñones.
Si alguna vez has tenido una enfermedad depresiva.
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 toma o utiliza otros medicamentos. Esto incluye cualquier medicamento que esté tomando y que pueda adquirirse sin receta, así como medicamentos a base de plantas y complementarios.
Si alguna vez ha tenido una reacción alérgica a un medicamento.
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How to take methyldopa
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.
Si olvida tomar una dosis, tómela en cuanto se acuerde. Intente tomar el número correcto de dosis cada día, pero no tome dos dosis al mismo tiempo para compensar la dosis olvidada.
Aproveche al máximo su tratamiento
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.
Es posible que su médico le dé consejos dietéticos y de estilo de vida sobre cómo seguir una dieta sana, no fumar y hacer ejercicio con regularidad. Si es así, es importante que siga los consejos que le den.
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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Can methyldopa cause problems?
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 me ocurre 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 persisten, informe a su médico. |
Important: 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 los comprimidos, hable con su médico o farmacéutico para que le aconsejen.
How to store methyldopa
Mantenga todos los medicamentos fuera del alcance y de 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
No tome nunca más de la dosis prescrita. Si sospecha que usted u otra persona ha tomado una sobredosis de este medicamento, acuda al servicio de urgencias de su hospital. Llévese el envase, aunque esté vacío.
Este medicamento es para usted. Nunca se lo dé a otras personas aunque su enfermedad parezca ser la misma que la suya.
No guarde medicamentos caducados o que no desee. Llévelos a su farmacia local, que se encargará de eliminarlos por usted.
Si tiene cualquier duda sobre este medicamento pregunte a su farmacéutico.
Informar de los efectos secundarios de un medicamento o vacuna
Si experimenta efectos secundarios, puede notificarlos en línea a través del sitio web de la Tarjeta Amarilla.
Lecturas complementarias y referencias
- Manufacturer's PIL, Aldomet® Tablets 250 mg and 500 mg; Aspen Pharma Trading Ltd, The electronic Medicines Compendium. Dated April 2022.
- Medicamentos BNF completa 89ª edición; Asociación Médica Británica y Real Sociedad Farmacéutica de Gran Bretaña, Londres.
Historia del artículo
La información de esta página ha sido redactada y revisada por médicos cualificados.
Fecha de la próxima revisión: 15 de enero de 2028
15 Ene 2025 | Última versión

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