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McNeil Products Ltd

Foundation Park, Roxborough Way, Maidenhead, Berks, SL6 3UG
Medical Information Direct Line: 01344 864042
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Summary of Product Characteristics last updated on the eMC: 22/11/2013
SPC Colpermin IBS Relief Capsules

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1. Name of the medicinal product

Colpermin IBS Relief Capsules

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2. Qualitative and quantitative composition

Peppermint Oil BP 0.2ml

Excipient: Arachis oil (peanut oil) BP

For the full list of excipients, see section 6.1

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3. Pharmaceutical form

Sustained release enteric coated and gastro-resistant capsule, size 1. Body opaque light blue, cap opaque blue, with a blue band between body and cap.

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4. Clinical particulars

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4.1 Therapeutic indications

For the relief of the symptoms of Irritable Bowel Syndrome.

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4.2 Posology and method of administration

For oral use. Do not chew or break the capsule.


One capsule three times a day. This dosage may be increased to two capsules three times a day if discomfort is severe.

The capsules should be taken until symptoms resolve which would normally be within one or two weeks. The treatment can be continued for longer periods of between 2 to 3 months, when symptoms are more persistent.


As adult dose.


There is no experience in the use of these capsules in children under the age of 15.

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4.3 Contraindications

Hypersensitivity to the active substance or to any of the excipients.

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4.4 Special warnings and precautions for use

The capsules should be swallowed whole, ie not broken or chewed. Patients who already suffer from heartburn sometimes have an exacerbation of this symptom after taking Colpermin. Treatment should be discontinued in these patients.

Colpermin contains Arachis oil (peanut oil) and should not be taken by patients known to be allergic to peanut. As there is a possible relationship between allergy to peanut and allergy to Soya, patients with Soya allergy should also avoid Colpermin.

The patient should be advised to consult a doctor before use in the following circumstances:

• first presentation of these symptoms for confirmation of IBS

• aged 40 years or over and it is some time since the last attack, or the symptoms have changed

• blood has been passed from the bowel

• there is a feeling of sickness or there is vomiting

• loss of appetite or loss of weight

• paleness and tiredness

• severe constipation

• fever

• recent foreign travel

• pregnancy or planning a pregnancy or possibly pregnant

• abnormal vaginal bleeding or discharge

• difficulty or pain in passing urine

If there are new symptoms or worsening of the condition or failure to improve over two weeks, the patient should consult their doctor.

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4.5 Interaction with other medicinal products and other forms of interaction

The capsules should not be taken immediately after food. Indigestion remedies should not be taken at the same time as Colpermin.

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4.6 Fertility, pregnancy and lactation

There are no adequate and well-controlled studies in pregnant women. This product should not be used during pregnancy unless the potential benefit of treatment to the mother outweighs the possible risks to the developing fetus.

It is not known whether peppermint oil or its metabolites are excreted in human milk.

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4.7 Effects on ability to drive and use machines

Peppermint Oil has no influence on the ability to drive and use machines.

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4.8 Undesirable effects

Adverse drug reactions (ADRs) identified during post-marketing experience with Peppermint Oil are included in the following table. The frequencies are provided according to the following convention:

Very common ≥1/10

Common ≥1/100 and <1/10

Uncommon ≥1/1,000 and <1/100

Rare ≥1/10,000, and <1/1,000

Very rare <1/10,000

Not known (cannot be estimated from the available data)

Adverse Drug Reactions Identified During Post-Marketing Experience with Peppermint Oil Frequency Category Estimated from adequately designed clinical trials or epidemiology studies


Frequency category

Adverse Event Preferred Term

Immune System Disorders

Not known


Nervous System Disorders

Not known

Burning sensation mucosal

Gastrointestinal System Disorders

Not known

Anorectal discomfort

Not known


Not known

Gastrooesophageal reflux

Not known


Not known


** Individual intolerance as well as allergic reactions may occur. Includes erythematous rash, headache, bradycardia, muscle tremor and ataxia which may occur in conjunction with alcohol.

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4.9 Overdose

The most commonly reported symptoms of overdose are severe nausea, vomiting, abdominal pain, vertigo, ataxia, drowsiness and coma.

In the event of overdosage, the stomach should be emptied by gastric lavage. Observations should be carried out with symptomatic treatment if necessary.

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5. Pharmacological properties

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5.1 Pharmacodynamic properties

Antispasmodic and carminative.

The mode of action is local rather than systemic. The enteric coating delays opening of the capsule until it reaches the distal small bowel. Peppermint oil is then slowly released as the matrix passes along the gut. The oil exerts a local effect of colonic relaxation and a fall of intra-colonic pressure.

Pharmacological studies have demonstrated that peppermint oil exerts its inhibitory effect on gastrointestinal smooth muscle by interference with the mobilisation of calcium ions.

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5.2 Pharmacokinetic properties

Not relevant.

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5.3 Preclinical safety data

Not relevant.

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6. Pharmaceutical particulars

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6.1 List of excipients

White beeswax

Arachis oil

Colloidal Silica

Gelatin, Titanium dioxide

Indigotine (E132)

Eudragit S100

Eudragit L30 D55

Triethyl citrate,

Ammonia solution 10%


Polyethyleneglycol 4000


Purified Water

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6.2 Incompatibilities


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6.3 Shelf life

36 months

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6.4 Special precautions for storage

Store below 25°C, avoid direct sunlight.

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6.5 Nature and contents of container

Aluminium foil/PVC blister pack containing 10 capsules (250μm PVC, 20μm Al).

Pack sizes: 10, 20, 60 and 100 capsules.

Not all pack sizes may be marketed.

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6.6 Special precautions for disposal and other handling

No special requirements.

Any unused medicinal product or waste material should be disposed of in accordance with local requirements

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7. Marketing authorisation holder

McNeil Products Limited

Foundation Park

Roxborough Way




United Kingdom

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8. Marketing authorisation number(s)

PL 15513/0141

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9. Date of first authorisation/renewal of the authorisation

01st May 2005

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10. Date of revision of the text

13th November 2013

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