Irritable bowel syndrome (IBS) is the most common intestinal upset, affecting 1-2 in every ten people. IBS is not dangerous in any way. It can be uncomfortable, unpleasant and distressing.

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DrFelix supplies all UK available treatments for IBS such as Colofac, Fybogel Mebeverine and Colpermin.

Complete a short consultation before selecting your medication. All our consultations are approved by a UK Medical Doctor.

Summary of available medications

Medication Quantity Price
Colpermin capsules (peppermint oil 0.2mls) 100 to 300 capsules From £18.99
Colofac tablets (mebeverine 135mg) 100 to 300 tablets From £15.99
Colofac capsules m/r (mebeverine 200mg) 60 to 120 slow release capsules From £12.99
Fybogel mebeverine (135mg+ispaghula husk 3.5g) 10 to 40 sachets From £8.99

All medications


Medication Quantity Price
Colpermin capsules (peppermint oil 0.2mls) 100 capsules £18.99
Colpermin capsules (peppermint oil 0.2mls) 200 capsules £34.99
Colpermin capsules (peppermint oil 0.2mls) 300 capsules £49.99


Medication Quantity Price
Colofac tablets (mebeverine 135mg) 100 tablets £15.99
Colofac tablets (mebeverine 135mg) 200 tablets £26.99
Colofac capsules m/r (mebeverine 200mg) 60 slow release capsules £12.99
Colofac capsules m/r (mebeverine 200mg) 120 slow release capsules £20.99

Fybogel Mebeverine

Medication Quantity Price
Fybogel mebeverine (135mg+ispaghula husk 3.5g) 10 sachets £8.99
Fybogel mebeverine (135mg+ispaghula husk 3.5g) 20 sachets £13.99
Fybogel mebeverine (135mg+ispaghula husk 3.5g) 40 sachets £23.99

All prices exclude prescription fee

What is irritable bowel syndrome (IBS)?

Irritable bowel syndrome, commonly referred to as IBS, is a condition affecting the digestive system which is associated with various unpleasant symptoms. Depending on the severity, flare-ups can last between a day and a few weeks and can therefore have a detrimental impact on day to day life. Common symptoms of IBS include abdominal pain and cramps, bloating, flatulence, diarrhoea and / or constipation.

What causes IBS?

The exact cause of IBS is currently unknown, although there are various triggers which have been identified as leading to flare-ups.

What triggers IBS?

IBS can be triggered by a number of factors which vary from individual to individual. Certain food and drinks have been recognised as leading to the onset of IBS, such as spices, chocolate, fatty food, alcohol and drinks containing caffeine. Stress and hormones have also been acknowledged as factors which can trigger a flare-up of IBS.

How is IBS diagnosed?

IBS is usually diagnosed by a doctor identifying a recurring pattern of symptoms which are typical of IBS, including abdominal pain, bloating, cramps, constipation or diarrhoea. It may be necessary to undergo testing to eliminate other potential illnesses if some symptoms are unusual or if medication does not effectively treat the symptoms.

Treatments for Irritable Bowel Syndrome (IBS)

There are a number of different treatment options available to relieve the symptoms of IBS. It is also important to understand what exactly triggers your IBS, as this can then be avoided where possible to help manage the condition and prevent flare-ups.

Colofac tablets or capsules, which contain the active ingredient mebeverine hydrochloride, treat symptoms by relieving muscle spasms and pain caused by IBS.

Colpermin capsules, containing peppermint oil, also relieve the spasms and cramps associated with IBS by relaxing the bowel wall. This allows any pockets of trapped gas to through the bowel and out of the body.

Fybogel Mebeverine granules, which contain ispaghula husk and mebeverine hydrochloride, relieve pain by relaxing muscle spasms and restoring bowel regularity.

Side effects of IBS medicine

Each type of medication used for IBS is associated with its own potential side effects, although usually mild, which should be considered before beginning treatment.

Colofac can cause a skin rash, or more rarely an allergic reaction or difficulty breathing. Seek medical attention immediately if any serious side effects arise from taking this medication. Colofac should not be used while pregnant or breastfeeding.

Colpermin can sometimes trigger nausea, vomiting or heartburn. If an allergic reaction is experienced, indicated by a rash, headache, shaking or low pulse rate, stop using this medication and consult a doctor or pharmacist. Seek advice from your doctor or pharmacist before taking Colpermin if you are pregnant or breastfeeding.

Fybogel Mebeverine can cause flatulence or bloating in the first few days of starting this medication. It can rarely produce an allergic reaction, such as a skin rash, swelling of the face or difficulty breathing. If this occurs, contact your doctor immediately and stop taking this medication. Check with your doctor or pharmacist before taking Fybogel Mebeverine if you are pregnant or breastfeeding.

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