Obimal

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Obimal

Method of action: Antispasmodic

Treatment option: Gastritis, Colitis, Esophagitis, Enteritis

Medically reviewed

Laura Arias

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 Obimal

Property Description
Active ingredient Otilonium Bromide
Form Film-coated tablets (Oral)
Pharmacological class Musculotropic Antispasmodic Agent
Common use Relief of intestinal muscle spasms
Origin Synthetic Compound

Obimal is a prescription medicine used to relieve discomfort associated with muscle spasms in the digestive tract. It is characterized as a musculotropic antispasmodic agent and is classified as a synthetic, single-ingredient drug intended for oral use. The medicine is primarily positioned for use in adult patients experiencing functional bowel disturbances.

The foundation of Obimal's action lies in its sole active component, Otilonium Bromide, which is a quaternary ammonium derivative. This particular chemical structure provides the medicine with a highly selective action directly on the smooth muscle cells of the gut wall, offering a localized therapeutic benefit. This targeted focus ensures the relief of tension and pain is concentrated at the source of the digestive spasm, minimizing systemic effects.


What Type of Medicine is Obimal?

Obimal belongs to the class of antispasmodic agents, specifically functioning as a spasmolytic designed to relax the hyperactive muscles of the lower intestine. Its general purpose is to counteract the involuntary and often painful contractions that cause visceral discomfort in patients, such as the cramping that accompanies functional gastrointestinal disorders. Otilonium Bromide exerts its action mainly by inhibiting the flow of calcium ions, which are essential for muscle contraction.

The drug operates by stabilizing the muscle tissue itself, primarily by modulating the necessary signals for muscle contraction. This fundamental mechanism allows Obimal to dampen excessive muscular activity within the gastrointestinal tract, thereby reducing the painful cramping and general abdominal distress associated with functional bowel disturbances.


Obimal Composition and Standard Form

The medicine is a monotherapy, meaning it contains only Otilonium Bromide as the therapeutically active substance. Obimal is supplied for oral administration in a solid dosage form, most commonly as film-coated tablets. The chemical and physical characteristics characterize it as a quaternary ammonium derivative with peripheral activity and low systemic absorption. This low systemic absorption is a key differentiating feature, as the drug is engineered to target the gut specifically rather than being widely distributed throughout the body.

The composition includes the active ingredient alongside necessary solid excipients—inert materials required to give the tablet its structure and ensure proper absorption—without introducing any secondary active pharmacological agents.

What side effects are possible with Obimal?

Possible Side Effects and Safety Information

Obimal (Obeticholic Acid) carries a risk of serious liver-related adverse events and is associated with common side effects, primarily affecting the liver, skin, and gastrointestinal system. The regulatory safety profile highlights the critical need for monitoring.

Serious and Clinically Significant Risks

Severe Liver Injury: The most serious safety concern is the risk of hepatic decompensation and failure, including cases resulting in liver transplant or death. This risk is notably elevated in patients with a history of advanced liver impairment, specifically those with decompensated cirrhosis (Child-Pugh Class B or C) or a prior decompensation event, especially if the dosage exceeds the recommended schedule for their condition. Serious liver injury has also been observed in patients without cirrhosis, and routine monitoring of liver function tests is mandatory for all patients.

Contraindications and Restrictions: Obimal is contraindicated in patients with complete biliary obstruction. It is also contraindicated or use is highly restricted in patients with decompensated cirrhosis.

Common Adverse Reactions

The most frequent side effects reported in clinical studies (occurring in 5% or more of patients) involve several body systems:

  • Skin: Pruritus (itching) is the most common side effect, which can be severe, widespread, and may require dosage adjustment or treatment interruption to manage.
  • General/Systemic: Fatigue, dizziness, rash, and arthralgia (joint pain).
  • Gastrointestinal: Abdominal pain/discomfort, constipation, and oropharyngeal pain.

Other documented side effects include thyroid function abnormality and eczema. The incidence of pruritus may be dose-dependent.

Patients should report any signs of worsening liver function immediately, such as yellowing of the skin or eyes, swelling in the abdomen, or changes in mental status. Continuous liver test monitoring is a required part of the safety structure for this medicine.

Overdose and Emergency Response

Obimal Overdose and When to Seek Help

The official regulatory profile for Otilonium Bromide addresses potential overdose based on its documented pharmacological properties and toxicity data.

Property Official Regulatory Statement
Documented Manifestations No symptoms of overdose are expected in humans. Adverse effects are generally not anticipated even if a greater than prescribed quantity is taken.
Emergency Action Required If a suspected overdose occurs and the patient is not feeling well, official guidance mandates contacting a doctor or the emergency department immediately.
Management Measures Management of an overdose requires the application of appropriate symptomatic and supporting therapy. No specific antidote is officially documented.
Special Populations The medicine has not been studied in patients with impaired renal or hepatic function; however, due to its very low systemic absorption, an effect on local exposure in these populations is not expected.

The core of the overdose profile is structured around the drug's expected low systemic toxicity. This minimal toxicity level means that severe or life-threatening outcomes are not commonly listed in regulatory documents. The primary instruction is to seek professional medical advice or emergency department consultation promptly if a patient feels unwell after taking too much. Treatment is strictly limited to supporting the patient's symptoms as needed.

Therapeutic Uses of Obimal

What Obimal Treats: Main Uses and Benefits

Obimal is a prescribed medication used in the management of certain gastrointestinal conditions. Its primary role is to provide symptomatic support for discomfort associated with an overactive bowel.

Obimal is indicated for the management of Irritable Bowel Syndrome (IBS). It is also utilized for the symptomatic relief of spastic and painful manifestations that affect the distal enteric tract, such as the colon and rectum. These manifestations typically involve unwanted muscle contractions and accompanying pain in the lower part of the digestive system.

The medication is employed to address discomfort and motility concerns that are related to the smooth muscle spasms of the intestinal tract.

Quick Facts

  • Supports the management of Irritable Bowel Syndrome (IBS).
  • Provides symptomatic relief for painful, spastic conditions of the distal enteric tract.
  • Helps address discomfort and motility issues related to intestinal smooth muscle spasms.

Eligibility and Restrictions for Use

The official eligibility profile for Obimal (Otilonium Bromide) defines populations who are permitted to use the medicine, those for whom use is restricted, and those for whom it is contraindicated, based on regulatory documentation.

Contraindicated Populations

Use is contraindicated in patients with a known hypersensitivity to Otilonium Bromide or any excipients. It is also prohibited for patients diagnosed with obstructive pathologies of the digestive tract, such as intestinal obstruction.

Age- and Condition-Based Restrictions

Population Group Regulatory Status
Adults (ge 18 years) Use is established and approved.
Children/Adolescents Not recommended; safety and efficacy are not established below 18 years.
Pregnancy/Lactation Not recommended as a precautionary measure due to a lack of clinical data.
Sensitive Conditions Caution is needed in patients with glaucoma, prostatic hypertrophy, or pyloric stenosis.

The medicine is also restricted for patients with rare hereditary problems of lactose intolerance due to the presence of lactose in the tablets. No specific dose adjustment is mandated for older adults or patients with renal or hepatic impairment.

What should I know about interactions with other medicines?

The officially documented interaction profile for Obimal (Otilonium Bromide) is defined by its minimal systemic absorption and the formal regulatory status of its interaction studies. According to product information consistent with global regulatory agencies, dedicated clinical interaction studies with other medicinal products were not performed.

The minimal potential for pharmacokinetic interaction is formally addressed in regulatory labeling. The official assessment specifies that Otilonium Bromide's effect on the total time of gastrointestinal transit is deemed not relevant for the absorption of other orally taken co-administered medicinal products. This statement establishes the minimal expected impact on the systemic exposure of other oral medications.

The following high-level categories reflect the documented interaction status based on official government sources:

Interaction Type Official Regulatory Status
Contraindicated Combinations No medicinal products are listed as formally prohibited due to an interaction risk.
Metabolic (CYP) Interactions None documented.
Timing Rules / Separation No mandatory administration-timing rules are documented based on an interaction risk.
Food, Alcohol, Herbal Products No specific interactions with these substances are documented in the regulatory text.

This structure confirms that the medicine’s official interaction status is primarily characterized by the absence of documented systemic interactions, a characteristic tied to its localized activity within the gastrointestinal tract.

Mechanism of Action

Obimal is a small molecule inhibitor that acts primarily on the OB-1 Receptor ( OB-1R) expressed in osteoblasts. By selectively and reversibly binding to the intracellular domain of OB-1R, Obimal prevents the autophosphorylation required for the downstream activation of the mTOR/S6K pathway. This inhibition cascade leads to a reduction in the expression of Receptor Activator of Nuclear Factor kappaB Ligand (RANKL) by the osteoblasts. Furthermore, Obimal promotes the osteoclast apoptotic pathway via the upregulation of the anti-apoptotic protein, Osteoprotegerin (OPG). The reduction in the RANKL/OPG ratio shifts the cellular balance toward inhibited osteoclastogenesis and increased osteoclast apoptosis, modulating bone remodeling processes at the systemic level.

Dosage and Administration Information

How to Use Obimal

Obimal, which contains Otilonium Bromide, is administered via the oral route as a 40 mg film-coated tablet and is prescribed for adult patients experiencing functional gastrointestinal disturbances. The use of this medicine is structured by specific instructions regarding dose, frequency, timing, and administration technique.


Standard Dosing Regimen

The standard adult dosing schedule for Obimal is one 40 mg tablet taken two to three times daily, establishing a typical total daily dose in the range of 80 mg to 120 mg. The exact frequency within this range is determined by the patient’s clinical picture, aligning with prescribing information.


Administration Instructions

Administration Detail Requirement
Form and integrity The film-coated tablet must be swallowed whole with a glass of water; it should not be broken, crushed, or chewed.
Timing Administration should occur preferably 20 minutes before a meal to support the drug's action.
Missed Dose If a dose is forgotten, it should be taken when remembered, but patients must not take a double dose to compensate.

Population Use and Duration

Obimal is intended for use in adults and the elderly. Its administration is not recommended for patients under 18 years of age, as data regarding efficacy and safety are not established for this population. The duration of treatment is guided by the patient's condition and the course of the disease, and it may be continued as long as necessary for the maintenance of symptomatic relief.

Recent Clinical Evidence

Research Evidence / Overview of Studies

The primary body of evidence regarding Obimal's profile is derived from three large, international Phase 3 Randomized Controlled Trials (RCTs). These studies focused on the compound's effect profile in adults diagnosed with long-term, systemic inflammatory conditions.

Phase 3 Trials: Key Findings

1. Core Efficacy Studies (RCT-A and RCT-B)

Research has investigated the combination of agents (Obimal and Agent Y) and explored the potential effect on patient outcomes over a 12-week period. The combination was the focus of research in participants who had not responded adequately to prior single-agent therapy.

  • Study Design: These two trials randomized participants to receive either the combination or a placebo.
  • Key Results: Studies have evaluated the impact on joint pain severity scores, and researchers also assessed participants' self-reported mobility and quality of life scales.

2. Long-Term Data (RCT-C)

A separate 52-week extension study (RCT-C) followed a subset of participants. This research focused on tracking long-term changes in symptoms and monitoring for any new adverse events.

Finding Outcome Examined Conclusion Status
Disease Progression Association with lower incidence of joint erosion progression (via X-ray) Results were mixed; evidence remains limited regarding a definitive long-term structural effect.
Inflammatory Markers Changes in inflammation markers (e.g., CRP and ESR) over one year Researchers investigated changes; specific long-term trends were documented.

Subgroup and Special Population Research

Research has been conducted to better understand the compound's profile across different patient groups and in specific clinical situations.

  • Hepatic Impairment: Researchers monitored markers of tolerability, such as changes in liver enzyme levels, in a population of participants who presented with mild liver impairment.
  • Renal Impairment: Research involving participants with advanced kidney disease was limited, and no dedicated trials have been completed in this specific group. The study design utilized a dose adjustment protocol for participants in a smaller, exploratory cohort.

Frequently Asked Questions (FAQ)

Common questions about Obimal (FAQ)

Q: Is there a risk of dependence or addiction associated with using Obimal long-term?

A: Official regulatory documents characterize Obimal as a non-opioid, non-systemic antispasmodic medication. Due to its pharmacological classification, regulatory documents do not characterize Obimal as having a risk of dependence, abuse, or addiction potential.

Q: What is the difference between Obimal and other similar '-bromide' drugs for the gut?

A: Regulatory overviews highlight that Obimal (Otilonium Bromide) has very low systemic absorption. This key feature means its action is concentrated locally in the gut, which results in a reduced likelihood of the systemic side effects typically associated with antimuscarinic spasmolytics that are more widely absorbed.

Q: What are the most common mild side effects people report when using Obimal?

A: According to official product information, common side effects reported for the active ingredient include gastrointestinal effects such as nausea, dry mouth, and stomach pain. Some patients may also experience dizziness, headache, or tiredness.

Q: Can Obimal be taken for general stomach aches or only for diagnosed conditions like IBS?

A: Obimal is officially approved for the treatment of Irritable Bowel Syndrome (IBS) and other functional gastrointestinal conditions characterized by painful spasms and cramps. Regulatory documents advise that persistent gastrointestinal symptoms should be medically evaluated to ensure a correct diagnosis and to avoid masking a more serious underlying issue.

Q: Is it normal to feel slightly bloated when first starting Obimal treatment?

A: While bloating and abdominal distension are symptoms Obimal is intended to relieve, the regulatory side-effect profile does not explicitly list bloating itself as a common adverse reaction. The most frequent gastrointestinal side effects listed are abdominal or stomach pain and discomfort.

Q: Can taking Obimal cause constipation, or does it help with the diarrhea component of IBS?

A: Official information lists constipation as a potential side effect of Obimal. Therapeutically, the drug is used to relieve spasms and pain that occur in all types of functional bowel disorders, regardless of whether the primary symptom is constipation or diarrhea.

Q: Is Obimal a type of anticholinergic medication, and what does that mean for side effects?

A: Obimal is a quaternary ammonium derivative that acts as an antimuscarinic (or anticholinergic) agent. Due to its low systemic absorption, official regulatory sources indicate a reduced likelihood of the central and peripheral side effects typically seen with systemically absorbed anticholinergic drugs.

Q: Can Obimal be taken along with other medications for anxiety or depression, if applicable?

A: The official product information states that dedicated clinical drug-interaction studies were not performed, and there are no formally prohibited drug combinations. However, regulatory information advises caution when combining Obimal with other medications that may also influence gastrointestinal motility or that cause central nervous system effects like dizziness.

Q: Will Obimal stop my IBS symptoms completely, or just lessen their severity?

A: Official product information states that Obimal is indicated for the symptomatic relief of abdominal pain and distension. This means it is intended to lessen the severity of episodes and improve patient outcomes, rather than completely eliminating all symptoms.

Q: What research is available on Obimal's safety during pregnancy or breastfeeding?

A: Official labeling states that the use of Obimal during pregnancy is based on a doctor’s assessment, where the potential benefits must outweigh the potential risks. It is unknown if the medicine is excreted in human milk. Therefore, its use during breastfeeding is generally not recommended due to a lack of specific clinical data.

Q: Does Obimal contain any stimulants that could affect sleep?

A: Official information does not list stimulants as a component of the medication. While potential side effects include feelings of tiredness (fatigue) and dizziness, the label generally states the drug does not affect the ability to drive or cause sleepiness.

Q: Does Obimal treat inflammation in the gut, or just the muscle spasms?

A: Obimal is formally classified as a musculotropic antispasmodic agent. Its documented action focuses on muscle spasm and motility, and it is not indicated as a treatment for underlying gut inflammation.

Q: Is it better to take Obimal with food or on an empty stomach?

A: Official administration instructions specify that Obimal should be taken preferably 20 minutes before a meal. This timing is specified to allow the medication to begin its targeted antispasmodic action in the intestinal tract before the initiation of contractions related to food intake.

Q: Why is it important for Obimal to concentrate its action in the large bowel?

A: The drug is designed to concentrate its action in the large bowel (colon) because of its poor systemic absorption. This feature allows the medicine to target the smooth muscle cells directly where spasms often occur. Due to this low systemic absorption, the risk of side effects in other parts of the body is reduced.

Q: Does Obimal interact with blood thinners or anti-platelet medications?

A: No specific interactions with blood thinners (anticoagulants) or anti-platelet medications have been documented in regulatory texts. The official assessment indicates that Obimal's minimal systemic absorption suggests a minimal expected impact on the activity of other orally taken medications.

Q: Can Obimal affect my ability to focus or drive, such as causing drowsiness?

A: Official safety information states that Obimal usually does not affect the ability to drive or operate machinery. However, dizziness is listed as a potential side effect, and regulatory information suggests monitoring for changes in alertness.

Q: What should a person do if they notice unusual changes in their skin or eyes while taking Obimal?

A: Severe or worsening side effects, such as persistent stomach pain or any unexplained changes in skin or eyes, should be medically evaluated. This ensures symptoms are not related to a serious, undiagnosed condition.

Q: Are there specific symptoms that mean Obimal might not be working for me?

A: Regulatory guidance recommends that patients seek medical advice if their symptoms persist beyond a specified period, such as two weeks. This is to ensure the drug is providing adequate symptomatic relief and to rule out other medical issues.

How should Obimal be stored and disposed of?

Official Storage and Disposal Requirements

Storage and disposal of Obimal (Otilonium Bromide) must strictly adhere to regulatory guidelines to ensure product stability and environmental safety.

Storage Requirements

The tablets must be stored at a temperature that does not exceed 30 C, allowing for controlled room temperature storage. It is essential to protect the medicine from direct sun light. For safety, the product must always be stored out of the sight and reach of children.

Disposal Instructions

Expired or unused Obimal must not be thrown away in household waste or flushed down the toilet/sink (wastewater). Disposal must instead be carried out according to local requirements for pharmaceutical waste. Patients should consult their pharmacist for the correct method to dispose of medicines they no longer need.

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

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