Pentasa/Mesalazine
the items you wish
to order
by our qualified
prescriber
to your door step
Please use the options provided to make your final selection.

It is the prescribers duty to ensure that the medicine is being used safely and appropriately. please answer a few questions about yourself to help us process your request.
Customer Service Team
Confidentiality & Authenticity Assured
- Fully Regulated UK Pharmacy
- Authentic UK sourced medicines only.
- Trading for more than 10 years.
- Information Governance lead ensures all data is confidential
Need Help With Your Questionnaire?
Our customer service team is on hand Monday-Friday to help you with your queries.
Please call us on 08009788956 or
email us at: headoffice@pharmacyplanet.com
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 |
It looks like you missed filling in questions from the last consultation.Click Here to submit your response.
No subscriptions or hidden fees
Secure checkout

UK Regulated online pharmacy
Trusted by over 250,000+ happy customers
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.
| Product | What it is | What it's mainly used for | How you usually use it | What to expect |
|---|---|---|---|---|
| Asacol / Mesalazine Tablets | Mesalazine anti-inflammatory tablets | Ulcerative colitis and bowel inflammation | Taken regularly as prescribed | Helps reduce inflammation inside the bowel. |
| Mezavant / Mesalazine Tablets | Long-acting mesalazine tablets | Ulcerative colitis | Taken once daily | Designed for slow release throughout the bowel. |
| Octasa / Mesalazine Tablets | Mesalazine tablets | Inflammatory bowel conditions | Taken regularly | Helps maintain symptom control and reduce flare-ups. |
| Pentasa / Mesalazine Tablets | Mesalazine tablets | Bowel inflammation | Taken regularly | Slow-release treatment for ongoing inflammation control. |
| Pentasa / Mesalazine Sachets | Mesalazine granule sachets | Ulcerative colitis and bowel inflammation | Taken as prescribed | Sachet form may be easier for some people than tablets. |
| Salofalk / Mesalazine Tablets | Mesalazine tablets | Inflammatory bowel disease | Taken regularly | Helps manage bowel inflammation over time. |
| Salofalk / Mesalazine Sachets | Mesalazine granule sachets | Bowel inflammation | Taken as prescribed | Granule form designed for bowel delivery. |
| Colazide / Balsalazide Capsules | Anti-inflammatory bowel capsules | Ulcerative colitis | Taken regularly | Targets inflammation in the large bowel. |
| Olsalazine | Anti-inflammatory bowel medicine | Ulcerative colitis | Taken regularly | Helps reduce bowel inflammation and maintain remission. |
| Sulfasalazine / Salazopyrin Tablets | Anti-inflammatory bowel tablets | Ulcerative colitis and inflammatory bowel conditions | Taken regularly | Helps 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.
- Complete an Online Consultation — Provide details about your symptoms and health.
- Prescription Review — A UK-registered prescriber confirms if Pentasa tablets are suitable.
- Discreet Delivery — If approved, your treatment is delivered directly to your chosen address.
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.
| Product | What it is | What it's mainly used for | How you usually use it | What to expect |
|---|---|---|---|---|
| Asacol / Mesalazine Tablets | Mesalazine anti-inflammatory tablets | Ulcerative colitis and bowel inflammation | Taken regularly as prescribed | Helps reduce inflammation inside the bowel. |
| Mezavant / Mesalazine Tablets | Long-acting mesalazine tablets | Ulcerative colitis | Taken once daily | Designed for slow release throughout the bowel. |
| Octasa / Mesalazine Tablets | Mesalazine tablets | Inflammatory bowel conditions | Taken regularly | Helps maintain symptom control and reduce flare-ups. |
| Pentasa / Mesalazine Tablets | Mesalazine tablets | Bowel inflammation | Taken regularly | Slow-release treatment for ongoing inflammation control. |
| Pentasa / Mesalazine Sachets | Mesalazine granule sachets | Ulcerative colitis and bowel inflammation | Taken as prescribed | Sachet form may be easier for some people than tablets. |
| Salofalk / Mesalazine Tablets | Mesalazine tablets | Inflammatory bowel disease | Taken regularly | Helps manage bowel inflammation over time. |
| Salofalk / Mesalazine Sachets | Mesalazine granule sachets | Bowel inflammation | Taken as prescribed | Granule form designed for bowel delivery. |
| Colazide / Balsalazide Capsules | Anti-inflammatory bowel capsules | Ulcerative colitis | Taken regularly | Targets inflammation in the large bowel. |
| Olsalazine | Anti-inflammatory bowel medicine | Ulcerative colitis | Taken regularly | Helps reduce bowel inflammation and maintain remission. |
| Sulfasalazine / Salazopyrin Tablets | Anti-inflammatory bowel tablets | Ulcerative colitis and inflammatory bowel conditions | Taken regularly | Helps 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.
- Complete an Online Consultation — Provide details about your symptoms and health.
- Prescription Review — A UK-registered prescriber confirms if Pentasa tablets are suitable.
- Discreet Delivery — If approved, your treatment is delivered directly to your chosen address.
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.
clinical consultation
Answer a few questions on your health and your fitness goals.
assessment
Our clinicians will review your clinical questionnaire to make sure treatment is right for you.
aboard!
Once approved, you will access our wealth of experience and resources curated by our team and begin your clinical journey.
Need Help?

Start your weight loss journey heading in the right direction. Our team are here to help. Whether you’re unsure about which medicine is right for you or need help navigating the world of weight loss drugs, our team are on hand to help you make the right decision. We can put you in touch with one of our experienced weight loss clinicians so you can be sure you’re making the best decision with the most accurate information.
To get in touch, contact our Customer Service team on 0800 978 8956 or email headoffice@pharmacyplanet.com.
Review By
HARMINDER ‘HARMY’ KAUR
Last Updated On : Mar 13 2026
BSc(hons) Pharmacy
GPhC Number: 2061107
Authored By
GURDEV SEHMI
Last Reviewed On : Mar 23 2026
BSc Pharm, MRPharmS, Independent Prescriber, Superintendent Pharmacist, Clinical Lead
GPhC Number: 2050925


