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Pentasa/Mesalazine

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Starts at £63.00
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Price Comparison

Select your preferred options and see the best price

Pack Price (£)
Pentasa MR Tablets 1000mg 120 Tablets 118.00
Pentasa MR Tablets 1000mg 180 tablets 168.00
Pentasa MR Tablets 1000mg 60 Tablets 67.00
Pentasa MR Tablets 500mg 100 tablets 63.00
Pentasa MR Tablets 500mg 200 tablets 113.00
Pentasa MR Tablets 500mg 300 tablets 164.00

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Pentasa Tablets | Mesalazine Prolonged-Release for Ulcerative Colitis & Crohn's Disease

Ongoing gut inflammation can feel draining, especially when symptoms like diarrhoea, abdominal pain, and urgency keep returning. Pentasa tablets are designed to reduce inflammation in the bowel, offering targeted ulcerative colitis relief and improving overall digestive health.

As a well-established prescription IBS medication (used where inflammation is involved), Pentasa tablets work directly within the intestine to calm irritation and support long-term colon care.

What Are Pentasa / Mesalazine Tablets Used For?

Pentasa tablets are used to treat inflammatory bowel conditions such as ulcerative colitis and Crohn's disease. They are commonly prescribed for:

  • Ulcerative colitis flare-ups.
  • Long-term prevention of inflammation.
  • Crohn's disease affecting the bowel.
  • Ongoing gut inflammation relief.

Although often searched under IBS treatment, Pentasa tablets are specifically used where inflammation is present in the bowel.

How Pentasa / Mesalazine Tablets Work in the Gut

Pentasa tablets work by reducing inflammation in the lining of the bowel. The active ingredient mesalazine belongs to a group of medicines that act directly on the intestinal lining, reducing the release of inflammatory chemicals. This leads to:

  • Reduced swelling in the bowel.
  • Healing of damaged intestinal tissue.
  • Improved bowel function.
  • Better long-term digestive health.

Pentasa tablets use a slow-release system, allowing the medicine to act throughout the intestine for consistent bowel therapy.

How to Take Pentasa / Mesalazine Tablets

Pentasa tablets should be taken regularly, exactly as prescribed, to maintain control over inflammation.

General guidance:

  • Swallow the tablets whole with water.
  • Do not crush or chew the tablets.
  • Take your dose at the same time each day.

Alternative method: Tablets can be dispersed in a small amount of cold water and taken immediately if swallowing is difficult.

Typical dosage: Active symptoms: Higher daily dose as prescribed. Maintenance phase: Lower dose to prevent flare-ups.

Important tips: Stay well hydrated throughout treatment. Continue taking regularly, even if symptoms improve.

Consistent use ensures effective gut inflammation relief and supports long-term intestinal health.

Who Can Use Pentasa / Mesalazine Tablets?

Pentasa tablets are suitable for adults and some children with inflammatory bowel conditions, based on clinical assessment. They may be appropriate for:

  • Adults with ulcerative colitis or Crohn's disease.
  • Patients needing ongoing bowel therapy.
  • Individuals requiring structured digestive health support.

This prescription bowel medication is used under supervision to ensure safe and effective treatment.

Who Should Not Take Pentasa / Mesalazine Tablets?

Pentasa tablets may not be suitable for people with certain conditions. Avoid or take extra care if you:

  • Are allergic to mesalazine or aspirin-like medicines.
  • Have severe kidney or liver problems.
  • Have a history of asthma or bleeding disorders.

Always provide your full medical history during your consultation to ensure safe treatment.

Possible Side Effects of Pentasa / Mesalazine Tablets

Like all medicines, Pentasa tablets can cause side effects, although many people tolerate them well.

Common side effects:

  • Headache.
  • Diarrhoea.
  • Abdominal pain.
  • Nausea or vomiting.
  • Mild skin rash.

Serious side effects:

  • Severe abdominal pain or worsening symptoms.
  • Allergic reactions such as swelling or breathing difficulty.
  • Unusual bleeding or bruising.
  • Kidney or liver-related symptoms.

Seek urgent medical attention if serious symptoms occur.

Possible Interactions with Pentasa / Mesalazine Tablets

Pentasa tablets can interact with medicines that affect blood clotting, immunity, or metabolism. Inform your prescriber if you take:

  • Blood-thinning medicines.
  • Diabetes medications.
  • Immunosuppressants.
  • Anti-inflammatory treatments.

This ensures safe and effective digestive care.

Important Advice Before Taking Pentasa / Mesalazine Tablets

Regular monitoring may be required during treatment with Pentasa tablets. You may need:

  • Blood tests to check overall health.
  • Kidney and liver function monitoring.

Additional advice:

  • Stay hydrated to support kidney function.
  • Continue treatment as prescribed for long-term benefit.

Why Do People Prefer Pentasa / Mesalazine Tablets?

Pentasa tablets are chosen for their steady release and long-term control of inflammation. People often prefer this treatment because:

  • It provides consistent delivery of mesalazine across the bowel.
  • It supports both flare-up management and prevention.
  • It fits into structured anti-inflammatory bowel therapy plans.
  • It contributes to stable colon care over time.

For many, it becomes an essential part of managing chronic bowel conditions.

Mesalazine & Bowel Inflammation Treatments

These medicines are used to reduce inflammation in the bowel and are commonly prescribed for inflammatory bowel conditions such as ulcerative colitis. The table below compares commonly prescribed bowel inflammation treatments and how they are typically used.

ProductWhat it isWhat it's mainly used forHow you usually use itWhat to expect
Asacol / Mesalazine TabletsMesalazine anti-inflammatory tabletsUlcerative colitis and bowel inflammationTaken regularly as prescribedHelps reduce inflammation inside the bowel.
Mezavant / Mesalazine TabletsLong-acting mesalazine tabletsUlcerative colitisTaken once dailyDesigned for slow release throughout the bowel.
Octasa / Mesalazine TabletsMesalazine tabletsInflammatory bowel conditionsTaken regularlyHelps maintain symptom control and reduce flare-ups.
Pentasa / Mesalazine TabletsMesalazine tabletsBowel inflammationTaken regularlySlow-release treatment for ongoing inflammation control.
Pentasa / Mesalazine SachetsMesalazine granule sachetsUlcerative colitis and bowel inflammationTaken as prescribedSachet form may be easier for some people than tablets.
Salofalk / Mesalazine TabletsMesalazine tabletsInflammatory bowel diseaseTaken regularlyHelps manage bowel inflammation over time.
Salofalk / Mesalazine SachetsMesalazine granule sachetsBowel inflammationTaken as prescribedGranule form designed for bowel delivery.
Colazide / Balsalazide CapsulesAnti-inflammatory bowel capsulesUlcerative colitisTaken regularlyTargets inflammation in the large bowel.
OlsalazineAnti-inflammatory bowel medicineUlcerative colitisTaken regularlyHelps reduce bowel inflammation and maintain remission.
Sulfasalazine / Salazopyrin TabletsAnti-inflammatory bowel tabletsUlcerative colitis and inflammatory bowel conditionsTaken regularlyHelps control bowel inflammation and symptoms.

Important: This comparison is for general information only and does not replace medical advice. A prescriber will decide which treatment is suitable for you following an online consultation.

How to Order Pentasa / Mesalazine Tablets Online from Pharmacy Planet

Ordering Pentasa tablets is simple and secure.

  1. Complete an Online Consultation — Provide details about your symptoms and health.
  2. Prescription Review — A UK-registered prescriber confirms if Pentasa tablets are suitable.
  3. Discreet Delivery — If approved, your treatment is delivered directly to your chosen address.
Pentasa/Mesalazine Tablets

Ongoing gut inflammation can feel draining, especially when symptoms like diarrhoea, abdominal pain, and urgency keep returning. Pentasa tablets are designed to reduce inflammation in the bowel, offering targeted ulcerative colitis relief and improving overall digestive health.

As a well-established prescription IBS medication (used where inflammation is involved), Pentasa tablets work directly within the intestine to calm irritation and support long-term colon care.

Pentasa tablets are used to treat inflammatory bowel conditions such as ulcerative colitis and Crohn's disease. They are commonly prescribed for:

  • Ulcerative colitis flare-ups.
  • Long-term prevention of inflammation.
  • Crohn's disease affecting the bowel.
  • Ongoing gut inflammation relief.

Although often searched under IBS treatment, Pentasa tablets are specifically used where inflammation is present in the bowel.

Pentasa tablets work by reducing inflammation in the lining of the bowel. The active ingredient mesalazine belongs to a group of medicines that act directly on the intestinal lining, reducing the release of inflammatory chemicals. This leads to:

  • Reduced swelling in the bowel.
  • Healing of damaged intestinal tissue.
  • Improved bowel function.
  • Better long-term digestive health.

Pentasa tablets use a slow-release system, allowing the medicine to act throughout the intestine for consistent bowel therapy.

Pentasa tablets should be taken regularly, exactly as prescribed, to maintain control over inflammation.

General guidance:

  • Swallow the tablets whole with water.
  • Do not crush or chew the tablets.
  • Take your dose at the same time each day.

Alternative method: Tablets can be dispersed in a small amount of cold water and taken immediately if swallowing is difficult.

Typical dosage: Active symptoms: Higher daily dose as prescribed. Maintenance phase: Lower dose to prevent flare-ups.

Important tips: Stay well hydrated throughout treatment. Continue taking regularly, even if symptoms improve.

Consistent use ensures effective gut inflammation relief and supports long-term intestinal health.

Pentasa tablets are suitable for adults and some children with inflammatory bowel conditions, based on clinical assessment. They may be appropriate for:

  • Adults with ulcerative colitis or Crohn's disease.
  • Patients needing ongoing bowel therapy.
  • Individuals requiring structured digestive health support.

This prescription bowel medication is used under supervision to ensure safe and effective treatment.

Pentasa tablets may not be suitable for people with certain conditions. Avoid or take extra care if you:

  • Are allergic to mesalazine or aspirin-like medicines.
  • Have severe kidney or liver problems.
  • Have a history of asthma or bleeding disorders.

Always provide your full medical history during your consultation to ensure safe treatment.

Like all medicines, Pentasa tablets can cause side effects, although many people tolerate them well.

Common side effects:

  • Headache.
  • Diarrhoea.
  • Abdominal pain.
  • Nausea or vomiting.
  • Mild skin rash.

Serious side effects:

  • Severe abdominal pain or worsening symptoms.
  • Allergic reactions such as swelling or breathing difficulty.
  • Unusual bleeding or bruising.
  • Kidney or liver-related symptoms.

Seek urgent medical attention if serious symptoms occur.

Pentasa tablets can interact with medicines that affect blood clotting, immunity, or metabolism. Inform your prescriber if you take:

  • Blood-thinning medicines.
  • Diabetes medications.
  • Immunosuppressants.
  • Anti-inflammatory treatments.

This ensures safe and effective digestive care.

Regular monitoring may be required during treatment with Pentasa tablets. You may need:

  • Blood tests to check overall health.
  • Kidney and liver function monitoring.

Additional advice:

  • Stay hydrated to support kidney function.
  • Continue treatment as prescribed for long-term benefit.

Pentasa tablets are chosen for their steady release and long-term control of inflammation. People often prefer this treatment because:

  • It provides consistent delivery of mesalazine across the bowel.
  • It supports both flare-up management and prevention.
  • It fits into structured anti-inflammatory bowel therapy plans.
  • It contributes to stable colon care over time.

For many, it becomes an essential part of managing chronic bowel conditions.

Mesalazine & Bowel Inflammation Treatments

These medicines are used to reduce inflammation in the bowel and are commonly prescribed for inflammatory bowel conditions such as ulcerative colitis. The table below compares commonly prescribed bowel inflammation treatments and how they are typically used.

ProductWhat it isWhat it's mainly used forHow you usually use itWhat to expect
Asacol / Mesalazine TabletsMesalazine anti-inflammatory tabletsUlcerative colitis and bowel inflammationTaken regularly as prescribedHelps reduce inflammation inside the bowel.
Mezavant / Mesalazine TabletsLong-acting mesalazine tabletsUlcerative colitisTaken once dailyDesigned for slow release throughout the bowel.
Octasa / Mesalazine TabletsMesalazine tabletsInflammatory bowel conditionsTaken regularlyHelps maintain symptom control and reduce flare-ups.
Pentasa / Mesalazine TabletsMesalazine tabletsBowel inflammationTaken regularlySlow-release treatment for ongoing inflammation control.
Pentasa / Mesalazine SachetsMesalazine granule sachetsUlcerative colitis and bowel inflammationTaken as prescribedSachet form may be easier for some people than tablets.
Salofalk / Mesalazine TabletsMesalazine tabletsInflammatory bowel diseaseTaken regularlyHelps manage bowel inflammation over time.
Salofalk / Mesalazine SachetsMesalazine granule sachetsBowel inflammationTaken as prescribedGranule form designed for bowel delivery.
Colazide / Balsalazide CapsulesAnti-inflammatory bowel capsulesUlcerative colitisTaken regularlyTargets inflammation in the large bowel.
OlsalazineAnti-inflammatory bowel medicineUlcerative colitisTaken regularlyHelps reduce bowel inflammation and maintain remission.
Sulfasalazine / Salazopyrin TabletsAnti-inflammatory bowel tabletsUlcerative colitis and inflammatory bowel conditionsTaken regularlyHelps control bowel inflammation and symptoms.

Important: This comparison is for general information only and does not replace medical advice. A prescriber will decide which treatment is suitable for you following an online consultation.

Ordering Pentasa tablets is simple and secure.

  1. Complete an Online Consultation — Provide details about your symptoms and health.
  2. Prescription Review — A UK-registered prescriber confirms if Pentasa tablets are suitable.
  3. Discreet Delivery — If approved, your treatment is delivered directly to your chosen address.
Frequently Asked Questions

Yes, by reducing inflammation in the bowel lining, Pentasa tablets can reduce bleeding over time and improve overall bowel stability when taken regularly.

Some improvement may be noticed within a few weeks, but full control of diarrhoea linked to inflammation can take longer with consistent use.

Yes, the tablets can be mixed in a small amount of cold water and taken straight away if swallowing is difficult. Do not chew the granules.

It depends on your prescription. Some people take it once daily, while others take smaller doses throughout the day based on their condition.

Yes, it is used both to control active inflammation and to maintain stability after symptoms improve.

Some people notice mild digestive changes like nausea or discomfort at the start, but this usually settles as the body adjusts.

Yes, it may increase the effect of blood-thinning medicines, so your prescriber needs to know if you are taking them.

Yes, taking it at the same time daily keeps the medicine levels steady in your body, which improves control over inflammation.

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Review By

HARMINDER ‘HARMY’ KAUR

Last Updated On : Mar 13 2026

BSc(hons) Pharmacy

GPhC Number: 2061107

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Authored By

GURDEV SEHMI

Last Reviewed On : Mar 23 2026

BSc Pharm, MRPharmS, Independent Prescriber, Superintendent Pharmacist, Clinical Lead

GPhC Number: 2050925