Macrogoles para el estreñimiento o la limpieza intestinal
CosmoCol, Movicol, Laxido
Revisado por pares por Sid DajaniÚltima actualización por Michael Stewart, MRPharmSLast updated 5 Oct 2023
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Carefully follow the printed information given with the preparation.
Mix the contents of the sachet into water before taking.
Common side-effects include feeling sick (nausea) and tummy (abdominal) discomfort or pain.
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About macrogols
Tipo de medicamento | Osmotic laxative and bowel cleansing solution |
Usado para | Constipation; to evacuate the bowel before investigation or surgery |
También llamado | For constipation: CosmoCol®; Movicol®; Laxido®; Molaxole®; Strigol® |
Disponible como | Sachets of powder or oral liquid medicine |
Macrogols belong to a group of medicines known as osmotic laxatives. They are substances which are used medically to relieve constipation or to clear the bowel before some clinical procedures. They are sometimes called polyethylene glycols. Macrogols are identified by a number which represents their molecular weight so, for example, the macrogol used to relieve constipation is called macrogol '3350'.
Constipation is a common problem which 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. Macrogols relieve constipation by drawing water into your bowel to soften your stools, making them easier to pass.
Bowel cleansing solutions also contain macrogol '3350' although they are not treatments for constipation. They are used to ensure that the bowel is free of solid contents before a bowel examination or surgical procedure.
Before taking macrogols
Volver al contenidoSome 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 the treatment it is important that your doctor or pharmacist knows:
Si estás embarazada o amamantando.
If you have any bowel problems other than constipation, such as Crohn's disease, ulcerative colitis or toxic megacolon.
Si tienes una afección cardíaca.
Si alguna vez has tenido una reacción alérgica a un medicamento.
If you use starch-based food-thickeners to help with difficulty swallowing.
Si está tomando otros medicamentos. Esto incluye cualquier medicamento que esté tomando y que esté disponible para comprar sin receta, así como medicamentos herbales y complementarios.
If the treatment is intended for a child. This is because laxatives should only be given to children on the advice of a doctor or healthcare professional.
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How to take macrogols
Volver al contenidoBefore starting the treatment, read the manufacturer's printed information leaflet from inside the pack. It will tell you how to prepare your dose and how long the solution can be kept for after preparation. Once mixed with water, the solution should be kept in the fridge. Do not use any solution remaining after the time recommended in the manufacturer's instructions.
If taking for constipation (brands CosmoCol®, Movicol®, Laxido®, Molaxole®)
Your doctor will tell you how many sachets to take for each dose. A daily dose can range from 1-2 sachets daily, up to a maximum of 8 sachets daily. Unless the directions say otherwise, stir the contents of each sachet into half a glass of water (100-125 ml) before taking.
If taking for bowel cleansing (brands Klean-Prep®, Moviprep®)
You will be given written instructions from the clinic that will tell you how many sachets to make up into a solution, and when you should start to drink it. It is important that you follow the directions carefully.
You will also be given written instructions about what food or drink you can, or cannot, have until after the procedure is completed. Typically, the advice is to not eat any solid food from about two hours before you start drinking the solution. Again, it is important that you carefully follow the directions you are given.
The treatment can interfere with the absorption of medicines taken at the same time. If you take medication regularly, please ask your doctor about when to take your other medicines.
Obteniendo el máximo de tu tratamiento
Volver al contenidoIf taking for constipation
Una dieta saludable que contenga fibra (panes y cereales integrales, salvado, frutas y verduras de hoja verde) con varios vasos de agua al día y ejercicio diario son importantes para mantener una función intestinal saludable.
You can read more about how to prevent or treat constipation in the separate condition leaflets called Estreñimiento (for adults) and Estreñimiento en Niños.
If taking for bowel cleansing
The preparation will start to work after an hour or two, so stay near to a toilet while you are taking the solution.
If you have any questions about the treatment, contact the hospital department where you are receiving the treatment for further advice.
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Can macrogols 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 most common ones associated with macrogol '3350'. 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.
Común macrogol '3350' side-effects | ¿Qué puedo hacer si experimento esto? |
Tummy (abdominal) pain, wind (flatulence), feeling sick (nausea) | These effects do not usually last for long. Drinking the solution more slowly may help |
Si experimenta otros síntomas que cree que pueden deberse al medicamento, hable con su médico o farmacéutico para obtener más consejos.
How to store macrogols
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 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.
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.
Si compras algún medicamento, consulta con un farmacéutico que sean adecuados para tomar con tus otros medicamentos.
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.

¿Inseguro sobre mezclar medicamentos?
Verifica posibles interacciones entre medicamentos, suplementos y alimentos antes de tomarlos juntos.
Lecturas adicionales y referencias
- Manufacturer's PIL, Movicol 13.8 g Sachet; Norgine Ltd, The electronic Medicines Compendium. Dated April 2023.
- Medicamentos Completos BNF 89ª Edición; Asociación Médica Británica y Sociedad Real de Farmacia de Gran Bretaña, Londres.
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Historial del artículo
La información en esta página está escrita y revisada por pares por clínicos calificados.
Próxima revisión: 4 de octubre de 2026
5 Oct 2023 | Última versión

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