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Please note that whilst you are able to request the medicine strength and size required,
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Starts at £167.00
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Price Comparison

Select your preferred options and see the best price

PackPrice (£)
Olsalazine250mg112 Capsules203.00
Olsalazine250mg224 Capsules371.00
Olsalazine250mg336 Capsules551.00
Olsalazine500mg120 Tablets305.00
Olsalazine500mg180 tablets355.00
Olsalazine500mg60 Tablets167.00

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Olsalazine Capsules | 5-ASA Anti-Inflammatory for Ulcerative Colitis Maintenance

Living with ongoing bowel inflammation can feel unpredictable, especially when symptoms like diarrhoea, abdominal pain, and urgency come and go. Olsalazine is a targeted bowel anti-inflammatory treatment designed to reduce inflammation in the colon and support long-term gut health.

Used as a prescription IBS drug (where inflammation is involved), Olsalazine focuses on calming the bowel lining and restoring balance for better digestive care.

What Is Olsalazine Used For?

Olsalazine is used to treat inflammatory bowel conditions such as ulcerative colitis. It is commonly prescribed for:

  • Ulcerative colitis management.
  • Preventing flare-ups of inflammation.
  • Long-term intestinal treatment.
  • Reducing symptoms such as diarrhoea and abdominal pain.

Although often searched for as an IBS medication, Olsalazine is specifically used when inflammation is the underlying cause.

How Olsalazine Works in the Gut

Olsalazine works by reducing inflammation in the lining of the large intestine. It acts on the cells of the bowel lining to change how inflammatory chemicals are produced and released. This leads to:

  • Reduced swelling and irritation in the colon.
  • Healing of damaged intestinal tissue.
  • Improved bowel function.
  • Long-term support for colon therapy.

This makes Olsalazine an effective option for ongoing bowel inflammation relief.

How to Take Olsalazine

Olsalazine should be taken regularly as prescribed to maintain consistent control over inflammation.

General guidance:

  • Take the capsules or tablets with a glass of water.
  • Take during or just after meals.
  • Follow the exact dosing instructions on your prescription.

The dose will depend on the strength prescribed by your clinician during your consultation with Pharmacy Planet.

Typical dosage: Usually taken twice daily (morning and evening). Some people may be advised to take it three times daily for a short period. The dose may be adjusted over time depending on symptom control and the prescribed strength.

Important tips: Take at the same time each day. Continue taking regularly, even when symptoms improve. Do not stop suddenly without guidance.

Consistent use supports effective bowel inflammation relief and long-term intestinal treatment.

Who Can Use Olsalazine?

Olsalazine is suitable for adults with inflammatory bowel conditions, based on clinical assessment. It may be appropriate for:

  • Adults with ulcerative colitis.
  • Patients needing long-term colon therapy.
  • Individuals managing recurring inflammation.

This prescription IBS drug is used under supervision to ensure safe and effective treatment.

Who Should Not Take Olsalazine?

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

  • Are allergic to salicylates (such as aspirin).
  • Have kidney problems.
  • Have asthma or severe allergies.

A full consultation ensures safe and appropriate digestive care.

Possible Side Effects of Olsalazine

Like all medicines, Olsalazine can cause side effects, although many people tolerate it well.

Common side effects:

  • Diarrhoea.
  • Stomach pain or discomfort.
  • Nausea or vomiting.
  • Headache.
  • Joint or muscle pain.

Serious side effects:

  • Allergic reactions such as swelling or breathing difficulty.
  • Unexplained bruising or bleeding.
  • Signs of infection such as fever or sore throat.

Seek urgent medical attention if serious symptoms occur.

Possible Interactions with Olsalazine

Olsalazine can interact with other medicines, including over-the-counter and herbal treatments. Inform your prescriber if you take:

  • Anti-inflammatory medicines.
  • Other bowel treatments.
  • Any regular medications or supplements.

This ensures safe and effective gut health management.

Important Advice Before Taking Olsalazine

Regular monitoring is recommended during treatment with Olsalazine. You may need:

  • Blood tests to monitor overall health.
  • Ongoing review of your symptoms and response.

Additional advice:

  • Stay hydrated, especially if diarrhoea occurs.
  • Follow any dietary advice provided during treatment.
  • Report any worsening symptoms promptly.

This ensures safe and effective long-term bowel anti-inflammatory therapy.

Why Do People Choose to Buy Olsalazine?

Olsalazine is chosen for its targeted action and long-term control of bowel inflammation. People often prefer it because:

  • It focuses on the root cause of inflammation.
  • It supports both symptom control and prevention.
  • It fits into structured digestive care plans.
  • It helps maintain stable gut health over time.

For many, it becomes part of a long-term approach to managing inflammatory 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 Olsalazine Online from Pharmacy Planet

Ordering Olsalazine is simple and secure.

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

Living with ongoing bowel inflammation can feel unpredictable, especially when symptoms like diarrhoea, abdominal pain, and urgency come and go. Olsalazine is a targeted bowel anti-inflammatory treatment designed to reduce inflammation in the colon and support long-term gut health.

Used as a prescription IBS drug (where inflammation is involved), Olsalazine focuses on calming the bowel lining and restoring balance for better digestive care.

Olsalazine is used to treat inflammatory bowel conditions such as ulcerative colitis. It is commonly prescribed for:

  • Ulcerative colitis management.
  • Preventing flare-ups of inflammation.
  • Long-term intestinal treatment.
  • Reducing symptoms such as diarrhoea and abdominal pain.

Although often searched for as an IBS medication, Olsalazine is specifically used when inflammation is the underlying cause.

Olsalazine works by reducing inflammation in the lining of the large intestine. It acts on the cells of the bowel lining to change how inflammatory chemicals are produced and released. This leads to:

  • Reduced swelling and irritation in the colon.
  • Healing of damaged intestinal tissue.
  • Improved bowel function.
  • Long-term support for colon therapy.

This makes Olsalazine an effective option for ongoing bowel inflammation relief.

Olsalazine should be taken regularly as prescribed to maintain consistent control over inflammation.

General guidance:

  • Take the capsules or tablets with a glass of water.
  • Take during or just after meals.
  • Follow the exact dosing instructions on your prescription.

The dose will depend on the strength prescribed by your clinician during your consultation with Pharmacy Planet.

Typical dosage: Usually taken twice daily (morning and evening). Some people may be advised to take it three times daily for a short period. The dose may be adjusted over time depending on symptom control and the prescribed strength.

Important tips: Take at the same time each day. Continue taking regularly, even when symptoms improve. Do not stop suddenly without guidance.

Consistent use supports effective bowel inflammation relief and long-term intestinal treatment.

Olsalazine is suitable for adults with inflammatory bowel conditions, based on clinical assessment. It may be appropriate for:

  • Adults with ulcerative colitis.
  • Patients needing long-term colon therapy.
  • Individuals managing recurring inflammation.

This prescription IBS drug is used under supervision to ensure safe and effective treatment.

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

  • Are allergic to salicylates (such as aspirin).
  • Have kidney problems.
  • Have asthma or severe allergies.

A full consultation ensures safe and appropriate digestive care.

Like all medicines, Olsalazine can cause side effects, although many people tolerate it well.

Common side effects:

  • Diarrhoea.
  • Stomach pain or discomfort.
  • Nausea or vomiting.
  • Headache.
  • Joint or muscle pain.

Serious side effects:

  • Allergic reactions such as swelling or breathing difficulty.
  • Unexplained bruising or bleeding.
  • Signs of infection such as fever or sore throat.

Seek urgent medical attention if serious symptoms occur.

Olsalazine can interact with other medicines, including over-the-counter and herbal treatments. Inform your prescriber if you take:

  • Anti-inflammatory medicines.
  • Other bowel treatments.
  • Any regular medications or supplements.

This ensures safe and effective gut health management.

Regular monitoring is recommended during treatment with Olsalazine. You may need:

  • Blood tests to monitor overall health.
  • Ongoing review of your symptoms and response.

Additional advice:

  • Stay hydrated, especially if diarrhoea occurs.
  • Follow any dietary advice provided during treatment.
  • Report any worsening symptoms promptly.

This ensures safe and effective long-term bowel anti-inflammatory therapy.

Olsalazine is chosen for its targeted action and long-term control of bowel inflammation. People often prefer it because:

  • It focuses on the root cause of inflammation.
  • It supports both symptom control and prevention.
  • It fits into structured digestive care plans.
  • It helps maintain stable gut health over time.

For many, it becomes part of a long-term approach to managing inflammatory 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 Olsalazine is simple and secure.

  1. Complete the Online Consultation — Provide details about your symptoms and health.
  2. Prescription Review — A UK-registered prescriber confirms if Olsalazine is 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, Olsalazine can gradually reduce diarrhoea and improve bowel stability when taken regularly.

It begins working from the first doses, but noticeable improvement in symptoms usually takes a few weeks with consistent use.

Taking it during or after meals reduces irritation in the gut and lowers the chance of side effects like diarrhoea or stomach discomfort.

Most people take it twice daily, morning and evening, although some may be advised to take it three times a day for a short period.

Yes, it is often used long-term to prevent flare-ups and maintain stable gut health when taken regularly.

Mild diarrhoea can happen initially. Taking it with food and staying hydrated usually helps, and symptoms often settle over time.

Yes, it can interact with certain medicines, including over-the-counter and herbal treatments, so all medications should be mentioned during consultation.

Take it when you remember unless your next dose is due soon. Skip the missed dose and continue as normal without doubling the next dose.

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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