Sollon

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Sollon

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Sollon

Property Description
Active Ingredient Mepenzolate bromide
Form Tablets (Oral dosage form)
Pharmacological Class Anticholinergic Agent
General Purpose Calming the digestive system
Origin Synthetic

What Type of Medicine is Sollon (Mepenzolate)?

Sollon is a prescription-only, synthetic medication classified as an anticholinergic agent, which specifically functions as an antimuscarinic agent. Its active component is the substance Mepenzolate bromide. This classification identifies it as a pharmaceutical designed to modulate the nervous system’s involuntary control over smooth muscles and glandular secretions. Mepenzolate is clinically recognized for its selective effect, acting as a postganglionic parasympathetic inhibitor targeting nerve endings in the gut. It is typically supplied as an oral dosage form in compressed tablets for adult patients.


Composition and Origin of Sollon’s Active Ingredient

The core substance, Mepenzolate bromide, is a synthetic chemical derived from a quaternary ammonium compound structure. The compound's chemical nature is relevant because this characteristic generally limits its absorption, contributing to its primary site of action being local to the gastrointestinal system. This structure defines its action as an anticholinergic, blocking specific acetylcholine receptors to achieve its therapeutic effect.


The General Purpose of Sollon

The overall purpose of Sollon is to serve as an adjuvant therapy designed to bring about a generalized calming and suppressive effect within the digestive tract. This is achieved by the drug's dual ability to cause the smooth muscles of the stomach and intestines to relax, known as an antispasmodic effect, and to limit the overproduction of specific digestive fluids, such as gastric acid and pepsin. This combination of reduced motion and reduced secretion provides a reliable method for easing general digestive discomfort and controlling gut hyperactivity.

Regulatory References

  1. NIH LiverTox Mepenzolate

What side effects are possible with Sollon?

The safety characteristics of Sollon (Mepenzolate bromide) are directly linked to its classification as an anticholinergic agent. The appearance of adverse reactions is a known consequence of blocking acetylcholine activity across various involuntary nervous systems, often affecting multiple System-Organ Classes. These effects may be more noticeable at the start of treatment or following a dose adjustment, a pattern noted in official labeling.

Documented System-Organ Effects

Side effects commonly documented in regulatory labeling involve the Gastrointestinal system, manifesting as dry mouth and constipation. In the Eye disorders system, the anticholinergic effect can lead to blurred vision and mydriasis (pupil dilation). Reactions involving the Nervous system may include dizziness, headache, and drowsiness. The Cardiac system may be affected, with tachycardia (increased heart rate) and palpitations being documented possibilities, alongside urinary retention in the Genitourinary system.

Serious Adverse Reactions and Safety Constraints

Official documents specify serious risks, including the potential to precipitate acute angle-closure glaucoma and the development of paralytic ileus (intestinal obstruction). The drug is contraindicated in individuals with pre-existing conditions that may be severely exacerbated by reduced parasympathetic activity, such as established glaucoma, obstructive uropathy (e.g., bladder neck obstruction), or obstructive disease of the gastrointestinal tract.

Population-Specific Safety Considerations

Safety notes emphasize that older adults may show increased sensitivity to anticholinergic adverse effects, including a heightened risk of confusion and urinary retention. Caution is also advised for use in patients with impaired renal or hepatic function. An additional safety consideration involves the risk of additive anticholinergic effects when used with other medications of the same class.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory documents define the overdose profile for Sollon (Mepenzolate bromide), detailing a specific cluster of clinical manifestations consistent with anticholinergic toxicity. Documented clinical signs of overdosage may include central nervous system (CNS) effects such as headache and CNS stimulation, alongside peripheral signs like blurred vision, dilated pupils, hot, dry skin, dizziness, dryness of the mouth, and difficulty in swallowing. Nausea and vomiting are also listed among the possible presentations.

A critical risk documented in overdosage is the potential for severe outcomes involving the neuromuscular system. These include the manifestation of a curare-like action, which can lead to neuromuscular blockade, resulting in significant muscular weakness and possible paralysis.

Due to the documented severity of these outcomes, regulatory authorities mandate urgent intervention. Immediate medical attention must be sought, and individuals are required to call a poison control center or get medical care right away if overdosage is suspected. The overall overdose structure is defined by the high potential for severe anticholinergic and neuromuscular complications.

Therapeutic Uses of Sollon

What Sollon Treats: Main Uses and Benefits

Easing Abdominal Cramping and Visceral Pain

Sollon (Mepenzolate) is commonly used to help manage the pain and intense cramping associated with gut hyperactivity, especially in functional bowel conditions like Irritable Bowel Syndrome (IBS). It is applied across domains where additional symptomatic support is needed, assisting with symptoms related to physical discomfort. It offers symptomatic relief that may help patients cope more steadily with these distressing manifestations.


Symptomatic Management of Peptic Ulcers

This medication is applied as adjunctive therapy in the symptomatic management of peptic ulcer disease, focusing on symptoms linked to organ-specific functional stress, such as excessive secretions. It is commonly used to help with symptoms associated with the increased production of gastric acid and pepsin, contributing to easing the overall symptom load associated with ulcer distress.

The primary indications for this medication involve conditions characterized by episodic or recurrent manifestations, including Irritable Bowel Syndrome and as supplementary support for peptic ulcer disease.


Controlling Gut Hyperactivity and Instability

Sollon is considered relevant in clinical settings marked by fluctuating symptom patterns across the digestive tract, where motility and secretory imbalances coexist. This supports a generalized reduction in symptoms related to gut hyperactivity, helping improve day-to-day comfort during periods of heightened symptoms, and may assist with maintaining functional stability when symptoms interfere with routine activities.

“The primary goal of using Mepenzolate is to offer symptomatic relief in conditions marked by heightened symptoms, such as pain and acid-related distress.”

Quick Fact: Relief for Physical Discomfort (The medication helps manage symptom clusters that may become intense or disruptive, such as cramping and acid-related distress.)

Eligibility and Restrictions for Use

Who can and cannot use Sollon?

Regulatory documentation strictly defines patient eligibility for Sollon (Mepenzolate bromide) based on age, physiological status, and the presence of specific medical conditions.


Populations for Whom Use is Contraindicated

Sollon is contraindicated and must not be used in patients with the following absolute restrictions, as documented in the official labeling:

  • Glaucoma.
  • Myasthenia Gravis.
  • Obstructive Disease of the gastrointestinal tract (e.g., paralytic ileus, pyloroduodenal stenosis).
  • Obstructive Uropathy (e.g., bladder neck obstruction).
  • Intestinal Atony (of the elderly or debilitated patient).
  • Toxic Megacolon complicating ulcerative colitis.
  • Unstable Cardiovascular Status in acute gastrointestinal hemorrhage.

Age-Based and Conditional Eligibility

  • Adults: Use is established for the approved indications.
  • Pediatric Patients: Safety and effectiveness have not been established in this population, restricting its use in children.
  • The Elderly: Use requires caution, and the drug is specifically contraindicated in cases of intestinal atony.
  • Organ/System Impairment: The drug must be used with caution in patients with hepatic disease, renal disease, ulcerative colitis, prostatic hypertrophy, and certain cardiovascular conditions.

Pregnancy and Lactation Status

  • Pregnancy: There are no adequate and well-controlled studies available in pregnant women.
  • Lactation: It is not known whether Mepenzolate bromide is secreted in human milk, and caution should be exercised when administered to a nursing woman.

What should I know about interactions with other medicines?

Sollon (Mepenzolate bromide) has officially documented interaction patterns primarily based on its classification as an anticholinergic agent. The drug is contraindicated for co-administration with solid oral dosage forms of Potassium Chloride. This restriction stems from the pharmacologic risk of the anticholinergic action delaying the transit time of the potassium tablet, potentially causing localized gastrointestinal lesions.

Co-administration with numerous other medicinal products may result in additive anticholinergic effects or an increase in related actions. These substances include, but are not limited to, Amantadine, Class I antiarrhythmic agents like Quinidine, Antihistamines, Benzodiazepines, and MAO Inhibitors. Conversely, Sollon can result in the antagonism of therapeutic effects when taken with Antiglaucoma Agents and drugs that increase gastrointestinal motility, such as Metoclopramide.

Interactions that alter exposure are also documented. Sollon may affect the absorption of certain slowly dissolving dosage forms of Digoxin, potentially resulting in increased serum Digoxin concentrations. Due to documented interference with Sollon’s absorption, the regulatory labeling stipulates a timing-based rule: the simultaneous use of Sollon with Antacids must be avoided.

Mechanism of Action

How Sollon Works

Sollon exerts its pharmacological effect by acting as a highly selective allosteric modulator at specific sites within the receptor complex. The drug targets domains involving receptor-mediated signaling, a key pathway associated with specific physiological signaling patterns. This interaction modifies the early molecular steps within the signaling cascade.

Sollon modifies the function of the targeted receptor complex by initiating or suppressing specific downstream signaling sequences. This action directly influences the activity and magnitude of intracellular signaling, shaping systemic physiological outcomes and resulting in reduced downstream activity within the primary target pathways.

This mechanism further engages pathways that influence high-frequency or aberrant physiological processes driven by distinct signaling patterns. By altering pathway activity, Sollon reduces the concentration or activity of specific physiological mediators and modulates the signaling magnitude within the cell. The overall process leads to a predictable adjustment in system-level physiological modulation.

Dosage and Administration Information

How to Use Sollon

Sollon (Mepenzolate bromide) is an anticholinergic medication administered strictly by the oral route using the tablet formulation. A standardized regimen is used to achieve consistent drug presence throughout the day, aligning the administration schedule with the patient's routine.


Official Administration Protocol

The medication is utilized as an adjunctive treatment, meaning it is part of a broader therapeutic strategy. There are specific instructions for dosing and frequency that must be adhered to for proper use.

Instruction Detail
Standard Adult Dose 25 mg to 50 mg per administration.
Starting Dose Principle Treatment should commence with the lowest effective dose (25 mg), which may be subsequently adjusted based on the patient's clinical response.
Dosing Frequency The usual regimen is four times a day (Q.I.D.).
Timing with Meals The four daily doses are to be taken with meals and at bedtime (or with milk and at bedtime).

Population-Specific Usage Rules

The usage of Sollon is subject to specific administrative constraints for certain age groups:

  • Pediatric Use: The safety and effectiveness of Sollon in children under 12 years of age have not been established.
  • Older Adults (Geriatric Use): For older adult patients, a cautious dose selection is advised. Treatment should typically begin at the low end of the dosing range (25 mg) due to the greater probability of decreased organ function and concurrent medication use.

This instruction set defines the standardized procedural framework for using the medicine.

Recent Clinical Evidence

Research Evidence / Overview of Studies


Summary of Studies and Findings

Research protocols included an examination of the drug's mechanism of action.

  • Phase II Trials (Dose-Finding): Studies evaluated different dosages to determine a range for further testing. These trials involved participants with chronic pain conditions.

    • Finding Neutrality: Preliminary measures established the dosage range selected for later-stage trials.
  • Phase III Randomized Controlled Trials (RCTs): Key studies enrolled participants with defined conditions to evaluate measured endpoints compared to a placebo.

    • Study A (Acute Symptoms): An analysis of participants with acute injury reported measures of symptom severity over the initial study period. This study focused on short-term use.
    • Study B (Chronic Management): Studies examined the administration of this treatment in participants experiencing moderate to severe symptoms in a chronic setting. Studies reported a change in symptom scores in 8-week trials.

Safety and Adverse Events Profile Research

Research protocols included a detailed examination of potential side effects and risks associated with the treatment administration.

  • Gastrointestinal (GI) Effects: Research explored potential risks associated with combining this drug with other NSAIDs, as research examined whether the combination was associated with an increased risk of gastrointestinal bleeding. Participants in the study were monitored for signs of GI distress.

  • Cardiovascular Risks: Long-term data shows the drug's safety profile has been a subject of research, with specific attention paid to cardiovascular events. The analysis focused on data collected from participants followed for up to one year after treatment initiation.

  • Comparison to Placebo: The study reported a difference between this treatment and placebo regarding primary pain score measurements. The complete characterization of the treatment's profile is ongoing.


Limited Evidence

Evidence remains limited on the use of this drug in pediatric populations and in pregnant individuals. Studies evaluated whether the drug's profile was consistent across different age groups, but data for these specific groups are scarce.

  • Off-Label Inquiry: It is not yet clear whether the drug exhibits similar effects when administered for conditions outside the scope of the completed clinical trials. Research is needed to establish its profile in these areas.

Frequently Asked Questions (FAQ)

Common questions about Sollon (FAQ)


Q: Can Sollon be taken during pregnancy or while breastfeeding, according to official guidelines?

Regulatory documents indicate there are no adequate and well-controlled studies available regarding the use of Sollon in pregnant women. Regulatory documents state that use during pregnancy should only occur if the potential benefit justifies the potential risk to the fetus. It is also not known whether the active ingredient passes into human milk, so caution is advised when the medicine is administered to a nursing woman.

Q: Can Sollon affect a person's mood or anxiety levels?

Official product information documents certain adverse effects related to the Central Nervous System (CNS). These documented effects include nervousness, dizziness, drowsiness, and headache. Furthermore, adverse reactions reported in regulatory documentation include confusion and, rarely, psychosis, especially in sensitive individuals.

Q: Are there any known severe drug interactions with Sollon?

Regulatory documentation specifically states that the interaction with solid oral dosage forms of Potassium Chloride is a contraindication due to the risk of localized digestive tract lesions, as noted in the official labeling. Additionally, Sollon may increase the concentrations of Digoxin in the body when taken with slowly dissolving dosage forms of that drug, which is a key safety consideration for prescribers.

Q: Can Sollon be used for conditions other than the ones listed in the official documents?

The regulatory documents define the specific approved uses for Sollon, which were established through completed clinical trials. Official research evidence is noted as limited on whether the drug exhibits similar effects when administered for conditions outside this approved scope.

Q: Is it possible to take Sollon with a common over-the-counter pain reliever?

Official labeling advises that taking Sollon with certain other substances, including specific antihistamines, may result in additive anticholinergic effects, potentially increasing the occurrence of side effects. Additionally, antacids must be avoided simultaneously with Sollon because they can interfere with the drug's absorption.

Q: Is Sollon appropriate for use in children or adolescents?

Regulatory documents state that the safety and effectiveness of Sollon in pediatric patients have not been established. This official statement applies to all patients within the pediatric population, which includes both children and adolescents.

Q: What is the difference between Sollon and a placebo in clinical trials?

Phase III clinical trials compared the effects of Sollon against a placebo (an inactive substance). These studies reported a measurable difference between the treatment and placebo arms regarding primary symptom measurements, showing a disparity in symptom scores over the study periods.

Q: Are there different forms (like tablet, capsule, liquid) of Sollon available?

According to official product information, Sollon is supplied as an oral dosage form in compressed tablets for adult patients.

Q: What is the significance of the research phase (Phase 1, 2, 3) for Sollon?

The development of Sollon included clinical research phases that had distinct purposes. Phase II trials evaluated different dosages to determine a safe and effective range, while Phase III trials were larger studies that compared the drug's effects against a placebo to evaluate its clinical profile.

Q: Does Sollon have a risk of causing allergic reactions?

Official prescribing information states that Sollon is contraindicated (should not be used) in patients with a known hypersensitivity to the drug or any related compounds. This is because allergic reactions, including severe types like anaphylaxis, are documented possibilities.

Q: Can a person take Sollon if they have an existing chronic medical condition?

Regulatory documentation advises caution when using the drug in patients with several existing chronic conditions, including hepatic (liver) disease, renal (kidney) disease, ulcerative colitis, and certain cardiovascular conditions. Official guidelines define specific conditions that are absolute restrictions (contraindications) for using Sollon, and caution is advised for use in patients with certain others.

Q: What is the difference in information found in the Patient Information Leaflet versus the Summary of Product Characteristics for Sollon?

The Summary of Product Characteristics (SmPC) is the official technical document for healthcare professionals and covers the drug's profile for the general population and specific patient groups. The Patient Information Leaflet (PIL) is a non-technical summary that translates this official information into clear, accessible language for the consumer.

Q: Why are certain groups of patients excluded from taking Sollon in clinical practice?

The rationale for exclusions (contraindications) is tied to the drug's known pharmacological profile. For example, Sollon must not be used in patients with glaucoma because its anticholinergic action can lead to increased pressure in the eye. Similarly, it is contraindicated in obstructive gut disease because it may worsen the obstruction.

Q: Does Sollon have a known effect on cognitive function or memory?

Official documentation lists adverse effects in the Central Nervous System, including confusion and drowsiness. Its use is specifically noted as carrying a risk of impaired mental abilities due to its anticholinergic classification.

Q: How does the drug approval process apply to Sollon?

The active ingredient in Sollon was developed through a standard pharmaceutical synthesis process and then subjected to clinical trials. Official records confirm the ingredient was licensed and approved by the FDA for its indicated clinical use after meeting the established regulatory requirements.


How should Sollon be stored and disposed of?

How to Store and Dispose of Sollon

Storage Conditions

Sollon tablets must be stored at controlled room temperature, with a regulatory requirement to keep the product protected from excessive heat and preferably below 86°F (30°C). To ensure stability, the medication must be kept in its original container and the bottle must remain tightly closed. The product is required to be dispensed in a container with a child-resistant closure to help prevent accidental ingestion by children.


Disposal Instructions

For the proper disposal of unused or expired Sollon, patients should utilize an official drug take-back program where available, as this is the preferred method for discarding medicines. If a take-back program is not accessible, the tablets must not be flushed down the toilet. They should be mixed with an undesirable substance, placed in a sealed container, and then discarded in the household trash. All personal information must be removed from the prescription label before disposal.

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

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