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Hidróxido de magnesio para el estreñimiento

Phillips' Milk of Magnesia

Magnesium hydroxide is a laxative for occasional use only.

Take a dose at bedtime with a glassful of water.

If you are taking other medicines, do not take magnesium hydroxide within two hours (before or after) of your other medicines.

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About magnesium hydroxide

Tipo de medicamento

A laxative

Usado para

Estreñimiento

También llamado

Phillips'® Milk of Magnesia

Disponible como

Liquid mixture

Estreñimiento is a common problem. It can mean either going to the toilet less often than usual to empty your bowels, or passing hard or painful stools. Constipation can be caused by a number of things. Not eating enough fibre or not drinking enough fluid can cause constipation. Some conditions (such as pregnancy) can cause constipation, as can a lack of exercise or movement (such as being ill in bed), and some medicines. Often, increasing the amount of fibre in your diet (such as by eating more fruit, vegetables, cereals and wholemeal bread) and drinking plenty of water each day can effectively prevent or relieve constipation. A laxative such as magnesium hydroxide can also be helpful, if used occasionally.

Magnesium hydroxide works by drawing fluid into your bowel, which makes your stools softer and easier to pass. It can be bought without a prescription at pharmacies and other retail outlets.

To make sure that this is the right treatment for you, ask a pharmacist or doctor for advice before you start taking magnesium hydroxide if:

  • You are pregnant. This is because if you are expecting a baby, medicines should only be taken on the advice of a doctor.

  • You have problems with the way your kidneys work, or problems with the way your liver works.

  • You have severe tummy (abdominal) pain, cramping, or sickness (vomiting).

  • You are taking any prescription medicines. This is because magnesium hydroxide can reduce the absorption of many medicines.

  • You have ever had an allergic reaction to a medicine.

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  • Before you start taking the mixture, read the manufacturer's printed information attached to the pack. It will give you more information about magnesium hydroxide and how to take it.

  • Shake the bottle well to make sure the medicine is evenly mixed before pouring out a dose. The dose for an adult is 30-45 ml (six to nine 5 ml spoonfuls). The dose for a child aged 3-12 years is 5-10 ml (one or two 5 ml spoonfuls), although magnesium hydroxide should only be given to a child on the advice of a healthcare professional. Swallow the dose with a glass of water or milk at bedtime. The water/milk helps the magnesium hydroxide to work so it is important that you drink a glassful. It is also especially important if you are elderly, or at risk of becoming lacking in fluid in the body (dehydrated) for any reason.

  • Magnesium hydroxide is a laxative for occasional use only - do not take it for more than three consecutive days. It must not be taken to prevent constipation or to 'keep you regular'. If you are concerned about your bowel habit, please speak with your doctor for advice.

  • Do not take magnesium hydroxide at the same time as any other medicines. This is because it can interfere with the way your body absorbs other medicines and may stop them from working properly. Try to leave at least two hours both before and after a dose of magnesium hydroxide before you take any other medicines.

  • It is important for you to drink plenty while you are constipated. Adults should aim to drink at least two litres (about 8-10 cups) of fluid per day. Most sorts of drink will do but as a start, try just drinking a glass of water 3-4 times a day in addition to what you normally drink.

  • Intenta comer una dieta equilibrada que contenga alimentos ricos en fibra, como panes y cereales integrales, frutas y verduras, arroz integral y pasta integral. Si no estás acostumbrado a una dieta alta en fibra, puede ser mejor aumentar la cantidad de fibra que consumes gradualmente.

  • Mantener tu cuerpo activo te ayudará a mantener en movimiento tu sistema digestivo, así que intenta hacer ejercicio diario de forma regular.

  • You may wish to include some foods in your diet that contain sorbitol. Sorbitol is a naturally occurring sugar. It is not digested very well and draws water into your bowel which has an effect of softening stools. Fruits (and their juices) that have a high sorbitol content include apples, apricots, gooseberries, grapes (and raisins), peaches, pears, plums, prunes, raspberries and strawberries.

  • You can read more about how to prevent or treat constipation in the separate condition leaflets called Estreñimiento (for adults) and Estreñimiento en Niños.

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Occasionally, people who have taken magnesium hydroxide have experienced digestive symptoms such as mild diarrhoea and stomach cramps. If either of these happens to you, stop taking it. Other side-effects are unlikely but if you do experience any other symptoms, speak with a doctor or pharmacist for further advice.

  • 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.

  • Check the label on the bottle for an expiry date. Once a bottle of mixture has been opened, it may need to be used within a period of time, or discarded.

Información importante sobre todos los medicamentos

If you suspect that you or someone else might have taken an overdose of this medicine, go to the accident and emergency department of your local hospital. Take the container with you, even if it is empty.

Si vas a someterte a una operación o a un tratamiento dental, informa a la persona que realiza el tratamiento sobre los medicamentos que estás tomando.

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.

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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.

  • Next review due: 18 Oct 2027
  • 21 Oct 2024 | Última versión

    Última actualización por

    Michael Stewart, MRPharmS

    Revisado por pares por

    Sid Dajani
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