Mesalamina
Asacol Pentasa
Revisado por pares por Sid DajaniÚltima actualización por Michael Stewart, MRPharmSÚltima actualización 15 Abr 2023
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There are a number of different brands of mesalamine, some of which work in different ways. This means that your treatment could be affected by switching between some brands. Each time you collect a new supply from your pharmacy, check to see if it is the same brand as before. If it is different, discuss this with your pharmacist who will advise you.
It is important that you keep your regular appointments with your physician so that your progress can be checked. You may require regular blood tests.
Common side-effects include gastrointestinal symptoms and aches and pains. These tend to be minor.
Rarely, mesalamine can cause problems with your blood. You should tell your physician immediately if you have any unexplained bleeding, bruising, red or purple discolorations of the skin, sore throat or a high temperature (fever), or if you feel generally unwell.
De un vistazo
Mesalamine is a medicine used to treat inflammatory bowel diseases like ulcerative colitis and Crohn's ileo-colitis.
It helps to reduce inflammation in the intestine, allowing it to recover and preventing flare-ups.
Mesalamine can be taken as capsules, tablets, suppositories, or enemas, depending on the brand and area of intestine needing treatment.
Always follow your doctor's instructions for how to take mesalamine.
Common side-effects include indigestion, stomach pain, diarrhoea, headache, and muscle aches.
If you have unexplained bleeding, bruising, a sore throat, or fever, contact your doctor immediately.
About mesalamine
Tipo de medicamento | An aminosalicylate |
Usado para | Ulcerative colitis and Crohn's ileo-colitis, proctitis |
También llamado | Asacol®; Apriso®; Canasa®; Delzicol®; Lialda®; Pentasa®; Rowasa® |
Disponible como | Capsules, tablets, suppositories, enemas |
Colitis ulcerosa causes inflammation of the intestine, which leads to problems such as ulceration and bleeding. This causes symptoms such as abdominal pain and diarrhea. enfermedad de Crohn is a condition which causes inflammation of any part of the gastrointestinal system. When the inflammation is in the area where the small intestine joins the large intestine then it is called Crohn's ileo-colitis. Aminosalicilatos are a group of medicines commonly used to treat inflammatory bowel diseases such as these.
Mesalamine is one of the most commonly used aminosalicylates. Although it is not clear exactly how mesalamine works, it is thought to act on cells lining the intestine to change the way these cells make and release certain chemicals. These chemicals are thought to be a factor in causing the symptoms of ulcerative colitis. Mesalamine allows the damaged intestine to recover and helps to prevent symptoms from flaring up again.
There are a number of different mesalamine preparations, strengths and brands. The way the manufacturers make each of these brands differs slightly; this allows the different brands to release mesalamine in specific areas of the intestine. You will be prescribed the brand that allows mesalamine to be released in the part of your intestine which requires it most.
Mesalamine can be taken by mouth as capsules or tablets, or it can be given into the back passage (rectum) as a suppository or enema.
Before taking mesalamine
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 mesalamine it is important that your physician knows:
If you are pregnant or breastfeeding. (Although mesalamine is unlikely to be harmful to babies, it is still important that you tell your physician if you are expecting or breastfeeding a baby.)
Si tienes algún problema con el funcionamiento de tu hígado, o si tienes algún problema con el funcionamiento de tus riñones.
If you have ever had kidney stones (renal calculi) before.
Si tienes algún problema con tu respiración.
If you have ever had an allergic reaction to a medicine. It is particularly important that you tell your physician if you have had an unusual reaction to aspirin or a salicylate.
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.
How to take/use mesalamine
Before you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about mesalamine, and it will also provide you with a full list of the side-effects which you could experience.
Your dose will depend upon which brand of mesalamine has been prescribed for you. Your physician will tell you how much to take and when to take it, and these directions will also be printed on the label of the pack to remind you about what the physician said to you. Take mesalamine exactly as your physician tells you to.
Some mesalamine tablets are specially coated to pass through your stomach before they are absorbed. These must be swallowed whole and not broken, chewed or crushed. Check the label on your pack carefully and follow any advice it gives. Also, do not take any indigestion remedies within two hours of taking your doses (either before or after), as this will interfere with the special coating.
Some mesalamine capsules can be opened and the contents sprinkled on to soft food such as applesauce or yogurt. Pour the contents on to a spoonful of food and swallow without chewing the granules. Check the label on your pack carefully and follow any advice it gives.
If you forget to take a dose, take it as soon as you remember, unless it is nearly time for your next dose, in which case leave out the missed dose and take the next dose as normal. Do not take two doses together to make up for a forgotten dose.
How to use mesalamine enema
Mesalamine works best when your bowel is empty.
The enema should be inserted at bedtime so it can work overnight.
Shake the enema and release the seal on the nozzle.
Lie down on one side and draw your top knee up towards your chest. Insert the enema nozzle into your back passage (rectum).
Squeeze the bottle gently to completely empty the contents. This will take around 30-40 seconds.
Remove the nozzle from your back passage whilst still squeezing the bottle. Remain where you are for about 5-10 minutes until the urge to pass the enema has eased.
Throw away the empty enema bottle in a plastic bag (these are provided with some brands of enema).
Lávese las manos.
How to use mesalamine suppositories
Mesalamine works best when your bowel is empty.
The suppository should be inserted at bedtime so it can work overnight.
Remove the suppository from the packaging.
Using your finger, gently push the suppository into your back passage (rectum). Some people find it helps to squat, or to lie down on one side and draw their knees up towards their chest to do this.
Push the suppository in as far as possible. You may have the urge to pass the suppository out again but this should ease after a few minutes.
Lávese las manos.
Obteniendo el máximo de tu tratamiento
Each time you collect a new supply from your pharmacy, check to see if it is the same brand as before. If it is different, discuss this with your pharmacist who will advise you.
Try to keep your regular appointments with your physician and clinic. This is so your physician can check on your progress. Your physician will want you to have regular blood tests during the treatment.
Treatment with mesalamine may be long-term to prevent symptom flare-ups. Continue to take/use it unless you are advised otherwise.
Your physician may advise you make some changes to your diet as part of your treatment. This can include a special diet or a nutritional supplement.
It is important to maintain a good fluid intake whilst being treated with mesalamine.
Can mesalamine 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 most common ones associated with mesalamine. 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 physician or pharmacist if any of the following continue or become troublesome.
Common mesalamine side-effects (these affect fewer than 1 in 10 people) | ¿Qué puedo hacer si experimento esto? |
Indigestion, nausea or vomiting, stomach pain | Mantente en alimentos simples - evita comidas ricas o picantes |
Diarrhea | Bebe mucha agua para reponer los líquidos perdidos |
Headache, muscle aches and pains | Bebe mucha agua y pide a tu farmacéutico que te recomiende un analgésico adecuado. Si los dolores de cabeza persisten, consulta a tu médico |
Importante: rarely, mesalamine can cause problems with your blood. You should contact your physician immediately if you have any unexplained bleeding, bruising, red or purple discolorations of your skin, an unexplained sore throat or high temperature (fever), or if you feel generally unwell during the treatment.
Si experimenta otros síntomas que cree que pueden deberse a este medicamento, hable con su médico o farmacéutico.
How to store mesalamine
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 a la sala de 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.
If you are having any surgery or dental treatment, tell the person carrying out the treatment which medicines you are taking.
No conserve medicamentos caducados o no deseados. Pregunte a su farmacéutico sobre las formas de desechar los medicamentos de manera segura en su área local.
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.

¿Inseguro sobre mezclar medicamentos?
Verifica posibles interacciones entre medicamentos, suplementos y alimentos antes de tomarlos juntos.
Preguntas frecuentes
How do the different brands of mesalamine differ, and why is my specific brand important?
There are various mesalamine preparations, strengths, and brands. Each manufacturer designs their product to release mesalamine in specific areas of the intestine, meaning it targets different parts of your digestive system. Your physician will prescribe the brand that is best suited to treat the particular part of your intestine affected by your condition.
What should I do if I experience an uncommon but serious side effect while taking mesalamine?
While uncommon, mesalamine can sometimes cause blood-related issues. You should contact your physician immediately if you notice any unexplained bleeding or bruising, red or purple skin discolorations, an unexplained sore throat or high temperature (fever), or if you generally feel unwell during your treatment. These symptoms require prompt medical attention.
What are the common side effects of mesalamine and how can I manage them?
Common side effects include indigestion, nausea, vomiting, stomach pain, diarrhea, headache, and muscle aches. To manage indigestion, nausea, vomiting, or stomach pain, try eating simple foods and avoid rich or spicy meals. For diarrhea, headache, or muscle aches, drink plenty of water to stay hydrated. You can also ask your pharmacist to recommend a suitable painkiller for headaches. If any of these continue to be troublesome, speak with your physician or pharmacist.
How long will I need to take mesalamine?
Treatment with mesalamine may be long-term. This is often necessary to prevent your symptoms from flaring up again. You should continue to take or use it regularly unless your physician advises you otherwise.
Are there any dietary considerations while taking mesalamine?
Your physician might suggest certain changes to your diet as part of your overall treatment plan. This could involve following a special diet or taking nutritional supplements. Also, it's particularly important to maintain a good fluid intake throughout your treatment with mesalamine.
Lecturas adicionales y referencias
- FDA Label, Asacol® mesalamine 400 mg tablet, delayed release; Allergan Inc. DailyMed, National Institutes of Health, U.S National Library of Medicine. Dated November 2022.
- FDA Label, Pentasa® mesalamine capsule, 250 mg and 500 mg controlled release; Shire US Manufacturing Inc. DailyMed, National Institutes of Health, U.S National Library of Medicine. Dated November 2022.
- FDA Label, Rowasa® (mesalamine) Rectal Suspension Enema; Meda Pharmaceuticals. DailyMed, National Institutes of Health, U.S National Library of Medicine. Dated November 2022.
- FDA Label, Canasa® mesalamine suppository; Allergan USA, Inc. DailyMed, National Institutes of Health, U.S National Library of Medicine. Dated November 2022.
Sobre el autorVer biografía completa

Michael Stewart, MRPharmS
Gerente de Revisión de Folletos de Medicamentos – Contratista, Farmacéutico
BPharm (Hons), MRPharmS
Michael es un farmacéutico comunitario que ejerce en Midlands y South Yorkshire con más de 20 años de experiencia asesorando sobre medicamentos y condiciones médicas. Tiene una sólida formación en capacitación en atención médica, habiendo producido e impartido cursos de formación para equipos de farmacia y personal de entornos de atención residencial, incluidas enfermeras. También ha contribuido a juntas asesoras de farmacia para la gestión de condiciones de baja gravedad en la comunidad.
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.
Historial del artículo
La información en esta página está escrita y revisada por pares por clínicos calificados.
Artículo también disponible en Inglés, Alemán, Español, Francés, Italiano, Portugués, Hindi, Hebreo, Árabe, y Sueco.
Próxima revisión: 13 de octubre de 2027
15 Abr 2023 | Última versión
3 May 2017 | Publicado originalmente
Escrito por:
Michael Stewart, MRPharmS

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