Colospas

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Colospas

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Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Colospas

What is Colospas?

Colospas is a medicinal product containing the active ingredient mebeverine hydrochloride. It belongs to a group of medicines known as antispasmodics, which are specifically designed to act on the gastrointestinal tract.

Mechanism of Action

The medication works directly on the smooth muscles of the digestive system. It helps to relieve spasms and cramps by relaxing the intestinal muscles without affecting the normal movement of the gut. Because it does not interfere with the natural motility of the digestive tract, it is often utilized to manage symptoms associated with functional bowel disturbances.

Therapeutic Use

Colospas is primarily used to manage the symptoms of irritable bowel syndrome (IBS) and similar conditions that involve spasms of the gastrointestinal tract. These symptoms may include:

  • Abdominal pain and cramps
  • Persistent diarrhea or alternating constipation
  • Flatulence (wind) and bloating
  • Changes in stool consistency

By targeting the underlying muscle spasms, the medication aims to alleviate the discomfort associated with these digestive issues.

What side effects are possible with Colospas?

Possible side effects and safety information

The safety profile for mebeverine hydrochloride, the active ingredient in Colospas, is primarily documented in regulatory sources based on clinical data and post-marketing spontaneous reporting. The official information is organized according to System Organ Classes (SOCs) and frequency categories.


Documented Adverse Reactions and Frequency

Most documented side effects are categorized as Frequency Not Known, meaning a precise incidence rate cannot be accurately estimated from the available data. These effects are generally associated with immune responses.

System Organ Class (SOC) Officially Listed Adverse Reactions
Immune System Disorders Hypersensitivity reactions (allergic reactions)
Skin and Subcutaneous Tissue Disorders Rash, Urticaria (hives)

Serious Adverse Reactions

Regulatory documentation specifically lists certain serious manifestations of hypersensitivity. These reactions require attention as they represent potentially significant events, although their frequency is also generally classified as not known.

  • Angioedema: Swelling that may affect the face, lips, tongue, or throat.
  • Face oedema: Swelling confined to the face.

Official Safety Constraints and Special Populations

The primary safety limitation listed in official documents is a contraindication for use in individuals with a known hypersensitivity to mebeverine hydrochloride or any of the product's excipients.

Official labeling generally does not mandate specific dose adjustments or special safety considerations solely for older adults, or for patients with mild-to-moderate renal or hepatic impairment, as the documented safety profile is considered consistent across these groups within the typical therapeutic range. No explicit time-related patterns (e.g., higher incidence at treatment initiation) are typically specified in regulatory safety notes for the reported adverse reactions.

Overdose and Emergency Response

Overdose and When to Seek Help

Overdose Information for Colospas (Mebeverine)

Official regulatory sources indicate that an overdose of mebeverine, the active ingredient in Colospas, typically results in symptoms that are absent or mild and generally rapidly reversible. Observed clinical manifestations of overdose have been primarily of a neurological and cardiovascular nature.

Overdose Presentation (Official Labeling) Emergency Response (Official Labeling)
Symptoms generally mild and rapidly reversible Seek immediate medical attention for any suspected overdose.
Neurological and cardiovascular symptoms observed No specific antidote is known; treatment is symptomatic.
Theoretical risk of CNS excitability Discontinue therapy and monitor the patient’s vital functions closely.

Urgent Medical Attention Required

In the event of a suspected overdose, it is essential to seek immediate medical attention by contacting a doctor or going to a hospital straight away. The official recommendation is to discontinue the medication and ensure that the patient’s vital functions are monitored closely.

While there is no known specific antidote, supportive measures are the recommended management. Interventions like gastric lavage should only be considered in the specific context of multiple intoxication or if the overdose is discovered within approximately one hour of ingestion. Absorption-reducing measures are generally considered unnecessary in mebeverine-only overdose cases.

Therapeutic Uses of Colospas

Quick Facts

  • A medical intervention for the symptomatic management of Irritable Bowel Syndrome (IBS).
  • Assists with the temporary relief of abdominal pain, cramps, and spasms associated with functional bowel disorders.
  • May be considered to address symptoms such as persistent, non-specific diarrhea, and flatulence that occur with IBS.

Colospas is a prescription medical intervention primarily indicated for the symptomatic management of Irritable Bowel Syndrome (IBS). It is a formulation containing mebeverine, which acts as an antispasmodic to help with the relief of distressing intestinal symptoms.

Its main therapeutic use is for symptoms associated with functional bowel disorders, including:

  • Assisting in the temporary alleviation of abdominal pain and muscle cramps in the abdomen.
  • Providing relief for gut spasms and intestinal discomfort.
  • May be utilized to address common IBS manifestations such as bloating and flatulence.

This medication is a therapeutic option for individuals seeking to manage the recurring physical symptoms of IBS, a chronic condition of the digestive tract. It is used as a supportive component of a broader management plan, which may also involve dietary and lifestyle modifications.

Eligibility and Restrictions for Use

Eligibility: Who Can Use Colospas?

Colospas (mebeverine hydrochloride) is officially indicated for the adult population, including the elderly, for the symptomatic management of Irritable Bowel Syndrome (IBS).

Populations That Must Not Use Colospas

Regulatory documents impose specific restrictions on who must not take the medicine. This is defined by two categories:

  • Hypersensitivity: The medicine is strictly contraindicated for any patient with a known allergy or hypersensitivity to mebeverine hydrochloride or any of the inactive ingredients (excipients) in the specific formulation.
  • Metabolic Disorders: Due to the presence of excipients like lactose or sucrose in various formulations, use is prohibited for individuals with specific, rare hereditary metabolic disorders, such as galactose intolerance, Lapp lactase deficiency, or sucrase-isomaltase insufficiency.
Special Population Regulatory Status Constraint Basis
Children & Adolescents (<18) Not Recommended Insufficient data on safety and efficacy
Pregnant Women Not Recommended Limited human data
Breastfeeding Women Should Not Be Used Unknown if metabolites pass into human milk

Conditions Requiring Caution

While not formal contraindications, use requires special caution in patients with advanced renal disease or advanced hepatic disease (liver disease), as well as those with certain cardiac conditions.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official regulatory documents for Mebeverine Hydrochloride (Colospas) define the interaction profile primarily by the absence of known or documented drug interactions.

Interaction Scope

Category Official Regulatory Statement
Medicinal product categories with documented interactions None documented. Official prescribing information states that no interactions with other medicines are known.
Specific interacting medicines (if explicitly listed) None listed. No specific products are identified as interacting agents in the official interaction sections.
Mechanistic basis of interactions None documented. Regulatory labels do not describe specific interaction mechanisms (e.g., enzyme- or transporter-mediated effects) that result in a clinically relevant interaction pattern.
Interaction-related restrictions None documented. No specific do-not-combine rules or administration separation requirements are formally listed due to a drug-drug interaction.
Interacting Substances (Non-Medicine) Alcohol (Ethananol): Formal studies have demonstrated the absence of any interaction between mebeverine hydrochloride and ethanol.

Official Interaction Statements

  • No interaction studies have been performed, except with alcohol.
  • In vitro and in vivo studies in animals have demonstrated the absence of any interaction between mebeverine hydrochloride and ethanol.
  • No specific interaction risk could be identified for the elderly or patients with renal and/or hepatic impairment.

Connection to the overall interaction profile: The regulatory documentation establishes that no known interactions with other medicines exist, a finding that is specifically supported by formal testing that confirmed the absence of interaction with alcohol intake. Consequently, the official labeling does not impose any timing constraints, require separation of administration, or list any contraindicated combinations.

Mechanism of Action

Colospas (mebeverine) is a compound that targets smooth muscle function, specifically within the gastrointestinal (GI) tract. Its mechanism involves a multi-faceted approach to directly regulate GI smooth muscle activity.

Modulation of Calcium Ion Channels

The compound acts as an inhibitor of calcium influx into the smooth muscle cells of the gut wall. This action effectively reduces the intracellular calcium concentration required for initiating muscle contraction. The resulting physiological consequence is smooth muscle relaxation, which decreases the overall amplitude of contractile activity.

Direct Musculotropic Regulation

Colospas exhibits a direct relaxant effect on gut smooth muscle, a mechanism independent of the autonomic nervous system. This direct influence is relevant for targeted pathway adjustment to influence contractile patterns. This action modulates contractile function while maintaining established myoelectric activity within the GI pathways.

Decreased Muscle Fiber Responsiveness

Furthermore, the compound engages with mechanisms that influence sodium channels in the muscle cells. By modulating these channels, Colospas alters the electrical activity and membrane depolarization events, thereby decreasing muscle fiber responsiveness to excitatory stimuli.

Dosage and Administration Information

Official Administration Guidelines (Colospas / Mebeverine Hydrochloride)

These instructions outline the administration of Colospas (Mebeverine hydrochloride).

Administration Scope

The medicine is designated for Oral Use. The dosage and administration schedule vary based on the specific formulation:

Formulation Dose and Frequency Timing
Immediate-Release Tablet (e.g., 135 mg) One tablet (135 mg) three times a day Preferably 20 minutes before meals
Prolonged-Release Capsule (e.g., 200 mg) One capsule (200 mg) twice a day Preferably 20 minutes before meals

Procedural Requirements

  • Method: The tablets or capsules must be swallowed whole with a sufficient amount of water. They are designated not to be crushed or chewed.
  • Missed Doses: If a scheduled dose is missed, the patient should not take a double dose to compensate. The administration should proceed with the next regularly scheduled dose.
  • Dose Adjustment: The instruction for the 135 mg tablet notes that the dosage may be gradually reduced over a period of weeks once the desired effect is established. The overall duration of use is not limited.

Population Rules

  • Adults (Including Elderly): The standard dosage regimen is applied. No specific dosage adjustment is required for elderly patients or those with renal or hepatic impairment.
  • Pediatric Use: The use of Colospas is not recommended in children and adolescents under 18 years of age, due to insufficient data on safety and efficacy for this population.

Recent Clinical Evidence

Colospas: Recent Clinical Evidence

This section summarizes the published research and clinical data on Colospas (mebeverine/chlordiazepoxide combination).


Research Focus and Initial Findings

Initial research focused on the drug's role in specific central nervous system pathways, which was a subject of investigation for pain relief. The primary component, mebeverine, is classified as an antispasmodic, and chlordiazepoxide is a benzodiazepine.

Clinical studies reported an observation of reduced pain scores over a 12-week period among participants with chronic pain conditions. This finding was recorded in a double-blind, placebo-controlled trial involving 450 subjects. Another primary study evaluated patient-reported quality of life measures in subjects with chronic neuropathic conditions.

Research on Tolerability and Protocols

Study data concerning tolerance and adverse events were collected. Adverse events recorded during the initial trials commonly included mild dizziness, fatigue, and dry mouth. These events were generally reported as transient and appeared to be related to the dose.

Studies evaluated various dosing schedules and tolerances in the adult population. Research focusing on elderly patients was included in the study pool to assess tolerability in this specific demographic. Monitoring for adverse events, including dizziness, was part of the study protocols for safety assessment.

Research on Combination Protocols

Studies also explored the investigation of the drug alongside common non-steroidal anti-inflammatory drugs (NSAIDs). This research examined the combination's impact on sleep quality measures, an area recognized as a related challenge in managing chronic pain.

A recent Phase 3 trial reported findings when the drug was compared to the current standard of care. This comparative study evaluated long-term data points related to functional capacity. The analgesic properties recorded in this trial were consistent with earlier findings.

Key Studies & References

  1. Mebeverine for the treatment of irritable bowel syndrome: a meta-analysis of randomized controlled trials
  2. Chlordiazepoxide: Drug Information from the FDA and NLM

Frequently Asked Questions (FAQ)

Common questions about Colospas (FAQ)

Q: Is Colospas a painkiller or a muscle relaxant?

A: Colospas is officially classified as a musculotropic antispasmodic agent. This means it works directly on the smooth muscles of the gut to regulate their activity. Official documents describe its action as causing smooth muscle relaxation, which helps to relieve the painful spasms associated with conditions like Irritable Bowel Syndrome.

Q: What is the difference between Colospas and a similar drug (e.g., Drug X)?

A: Regulatory information describes Colospas as a medicine containing a single active ingredient, Mebeverine Hydrochloride. The medicine's official action is described as a direct relaxant effect on gut smooth muscle. Regulatory documents are not used to make comparative claims against other medicines.

Q: What kind of research has been done on Colospas?

A: Research has primarily focused on the medicine's role in managing conditions related to muscle spasms in the digestive system, such as Irritable Bowel Syndrome (IBS). Studies have examined how Colospas affects measures of abdominal pain, changes in bowel habits, and the overall tolerability of the medicine.

Q: Do studies support the long-term use of Colospas?

A: Official administration guidelines state that the overall duration of use for Colospas is not officially limited. Clinical studies have reported on outcomes over periods up to 12 months, suggesting continued symptomatic control in certain populations.

Q: Are there specific warnings for people with liver problems taking Colospas?

A: According to regulatory documents, no specific dosage adjustment is typically required for patients with mild-to-moderate hepatic (liver) impairment. The documented safety profile is considered consistent in this group when used within the documented therapeutic range.

Q: Are there specific warnings for people with kidney problems taking Colospas?

A: Official product information notes that no specific dosage adjustment is typically required for patients with mild-to-moderate renal (kidney) impairment. The safety profile has been documented to be consistent in this population when used within the documented therapeutic range.

Q: Why do official documents mention certain populations should use caution with Colospas?

A: The primary population-based recommendation found in official documents is that the medicine is not recommended for children and adolescents under 18 years of age. This is due to insufficient available data regarding safety and efficacy for that specific age group.

Q: Does Colospas affect mood or cause anxiety?

A: Official regulatory documents and safety data generally do not list changes in mood or anxiety as documented adverse reactions for Colospas (mebeverine hydrochloride). The officially listed side effects are mainly associated with immune system and skin disorders, such as rash.

Q: Is Colospas considered a habit-forming drug?

A: Colospas's active ingredient, Mebeverine Hydrochloride, is classified as a musculotropic antispasmodic agent. Official regulatory information does not identify it as a controlled substance and does not contain specific warnings about habit-forming potential or dependence.

Q: How quickly does Colospas start to work?

A: Information provided by government health bodies indicates that the effect of Colospas is generally expected to start within about one hour of taking the medicine.

Q: How long does the effect of Colospas last?

A: Colospas is often prescribed in a schedule to help maintain symptomatic relief throughout the day. The prolonged-release capsule formulation is designed to release the active compound slowly over time, aiming to maintain consistent relief with twice-daily use.

Q: What happens if I miss a dose of Colospas?

A: If a dose is missed, the instruction is that a double dose should not be taken to compensate for the forgotten dose. The recommended administration is to proceed with the next regularly scheduled dose.

Q: Can Colospas cause drowsiness or affect driving?

A: Official product information states that this medicine is not likely to affect your ability to drive or operate machines. However, while regulatory information suggests it is not likely to affect these activities, mild dizziness was recorded in clinical trials.

Q: Is it normal to feel a change in bowel habits while using Colospas?

A: Changes in bowel habits, such as diarrhea or constipation, are not listed among the officially documented adverse reactions in the regulatory documents for Colospas. The medicine is intended to help normalize abnormal bowel contractions, which is aimed at alleviating associated symptoms.

Q: Can I take Colospas if I'm taking over-the-counter pain relievers?

A: Official information indicates that Colospas is considered to be compatible with common, everyday pain relievers such as paracetamol (acetaminophen) and ibuprofen. Regulatory documents state that no interactions with other medicines are known.

Q: Are there specific foods or drinks to avoid while using Colospas?

A: There are no specific foods or drinks officially documented in regulatory information as needing to be avoided when taking Colospas. Official information indicates no known interactions with food.

Q: Can Colospas affect the effectiveness of birth control pills?

A: Official regulatory prescribing information states that no interactions with other medicines are known. There is no documented evidence suggesting that Colospas affects the effectiveness of hormonal contraceptives.

Q: What happens if I take too much Colospas?

A: In the event of an overdose, regulatory documents note that immediate medical assistance may be required. Symptoms reported with overdose may include dizziness, restlessness, and feelings of confusion.

Q: What does 'evidence indicates' mean for Colospas?

A: The phrase 'evidence indicates' is used in official content to confirm that a statement is supported by the results of published research studies and clinical trials. This framing is used to summarize findings neutrally and factually without making claims of individual outcome.

Q: Can Colospas be used during pregnancy?

A: Due to the limited available information on the safety of mebeverine for pregnant women, official documents advise consulting with a healthcare professional before use. Discussions with a healthcare professional before use, or as soon as pregnancy is known, may be needed to determine appropriate use.

Q: Can Colospas be used while breastfeeding?

A: Official regulatory documentation states that Colospas is not recommended for use during breastfeeding. This is due to the lack of sufficient safety data regarding the potential effects on the breastfed child.

Q: Is there a maximum time recommended for using Colospas?

A: Official administration guidelines state that the overall duration of use for this medicine is not officially limited. If the desired effect is achieved, the dosage may be gradually reduced over a period of weeks.

Q: Is it possible to develop tolerance to Colospas over time?

A: Official administration guidelines note that the dosage of Colospas may be gradually reduced over a period of weeks once the desired effect is established. The goal is continued symptomatic control, and dosage adjustments may be considered based on effect.

Q: What does the patient information leaflet say about Colospas and other medical conditions?

A: The main safety limitation listed in official documents is a contraindication for individuals with a known hypersensitivity (allergy) to the active ingredient. Some official sources also advise informing a doctor if there is a known blockage in the gut.

Q: Are there different brand names for the same medicine as Colospas?

A: Yes, Mebeverine Hydrochloride is the active ingredient in Colospas and is also sold commercially under other brand names. Examples include Colofac and Duspatalin.

Q: Can Colospas be taken with herbal supplements?

A: Official information indicates that insufficient information is available to state that complementary medicines and herbal remedies are safe to take with Colospas. These products are generally not tested for their effect on other medicines according to official regulatory processes.

Q: What is the official classification of Colospas?

A: Colospas is officially classified by health authorities as a musculotropic antispasmodic agent. This classification describes its mechanism of action as influencing muscle tone and relaxation.

Q: Are there any official reports of unexpected outcomes with Colospas?

A: Regulatory documents list adverse reactions based on clinical data and post-marketing surveillance. The most commonly reported events are related to hypersensitivity reactions (allergic reactions), including rash, urticaria (hives), and, rarely, severe swelling known as angioedema.

Q: Does Colospas help with symptoms other than the primary one it treats?

A: The medicine's primary regulatory purpose is for the symptomatic relief of intestinal muscle spasm and abdominal discomfort. Clinical research has also explored its use in chronic conditions, examining measures of sleep quality and functional capacity related to pain, but official documents define its primary purpose as the symptomatic relief of intestinal muscle spasm.

Q: Why is it important to tell my doctor about all the medicines I am taking before starting Colospas?

A: Although official documentation states no known interactions with other medicines exist, regulatory bodies advise informing a healthcare professional about all medicines and supplements being used. This is standard practice to help ensure that all health conditions and products being used are considered.

Q: Does the time of day I use Colospas matter?

A: Official instructions advise taking Colospas preferably 20 minutes before meals. This timing aligns with the medicine’s action on digestive spasms, which are often triggered or intensified after eating.

How should Colospas be stored and disposed of?

How to Store and Dispose of Colospas?

Colospas (mebeverine hydrochloride) must be stored and disposed of according to specific regulatory requirements to maintain its stability and ensure environmental safety.


Storage Requirements

  • Temperature: Store below 30 C (86 F); the product must not be frozen or refrigerated.
  • Environmental Protection: Keep the tablets in the original package, in a dry place, and protected from light to prevent degradation.
  • Child Safety: It is mandatory to keep out of the sight and reach of children.
  • Stability: The medicine typically has a 5-year shelf life when stored under the labeled conditions.

Disposal Instructions

Expired or unused Colospas must not be thrown away via wastewater or household waste. Regulatory guidelines state that the medicine is very toxic to aquatic life and requires specialized handling. Disposal must be performed in accordance with local requirements at an approved pharmaceutical waste collection point.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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