Dibenol

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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 Dibenol

Property Description
Active Ingredient Glibenclamide (Glyburide)
Form Tablet
Pharmacological Class Oral Hypoglycemic Agent (OHA) / Sulfonylurea Derivative
Common Use Managing high blood glucose levels
Origin Synthetic

Dibenol is the trade name for a synthetic oral medication whose primary active substance is Glibenclamide, which is also known by the non-proprietary synonym Glyburide. The drug is formally classified as a second-generation sulfonylurea derivative, placing it within the large, clinically recognized group of Oral Hypoglycemic Agents (OHAs). This classification establishes its specific role in treating metabolic conditions.

This medication is manufactured as a single-active ingredient product and is formulated as a tablet intended for oral administration. The synthetic origin of Glibenclamide confirms its nature as a chemically synthesized drug. Dibenol is strictly a prescription-only medicine (Rx), underscoring the necessity of medical supervision for its use, particularly given its potent glucose-lowering action.

Glibenclamide: General Purpose and Therapeutic Context

The essential purpose of Glibenclamide is to address the issue of elevated blood glucose by acting as an insulin secretagogue. This pharmacological action involves stimulating the pancreatic beta-cells to encourage insulin secretion. This mechanism is an effective way to facilitate the release of the body's own insulin.

Consequently, the established utility of Dibenol is concentrated on supporting metabolic control and achieving better glycemic balance in individuals with Type 2 Diabetes Mellitus. Its function as a prescription OHA is critical in managing this chronic metabolic disorder, providing a foundational approach to regulating the body's glucose environment.

Regulatory References

  1. widely confirmed by decades of clinical practice

What side effects are possible with Dibenol?

Possible side effects and safety information

The safety profile of Dibenol (Glibenclamide) is primarily characterized by the risk of hypoglycaemia (low blood glucose), which is classified as a Very Common or Most Common adverse reaction in regulatory documents. This condition is the main expected pharmacological risk associated with its use.

Officially documented adverse reactions are grouped by System-Organ Classes (SOC), including the Gastrointestinal Disorders (e.g., nausea, heartburn, diarrhea) and Skin and Subcutaneous Tissue Disorders (e.g., rash, photosensitivity). Reactions affecting the liver, such as cholestatic jaundice and hepatitis, and the blood system, such as agranulocytosis and haemolytic anaemia, are listed as Rare but serious.

Serious Adverse Reactions and Warnings

The most significant safety alert in regulatory labeling is the Special Warning regarding an increased risk of cardiovascular mortality associated with this class of medication, as noted in FDA prescribing information. Severe hypoglycaemia is also considered a serious adverse reaction, potentially leading to neurological symptoms, seizures, or coma.

Population and Context-Specific Safety

Use of Glibenclamide is explicitly restricted in patients with severe renal or hepatic impairment due to the heightened risk of prolonged hypoglycaemia. Older adults are also noted to have an increased susceptibility to low blood glucose, where symptoms may be more difficult to recognize. Safety documentation also cautions that the risk of hypoglycaemia is higher following irregular mealtimes, unusual physical exertion, or alcohol consumption.

This high-level safety framework strictly defines the expected, rare, and serious risks, along with specific limitations on who may use the medication.

Overdose and Emergency Response

The documented overdose profile for Dibenol (Glibenclamide) is defined by the risk of profound and prolonged hypoglycemia (severe low blood sugar). This physiological effect may lead to life-threatening central nervous system depression.

Overdose manifestations officially listed in regulatory documents include initial signs of confusion, profuse sweating, tremor, anxiety, and rapid heartbeat. Without prompt action, these can quickly progress to severe outcomes, including seizures, coma, or permanent neurological damage.

When to Seek Immediate Medical Help

Official guidance mandates that individuals or caregivers seek immediate medical attention or contact emergency services or a Poison Control Center immediately if an overdose is suspected or confirmed, or if symptoms of severe low blood sugar are present.

Emergency Management and Monitoring

Treatment focuses on counteracting hypoglycemia, often involving the administration of intravenous glucose (Dextrose) in a healthcare facility. Regulatory instructions note that patients require protracted monitoring—typically 24 to 48 hours of hospital observation—due to the risk of the low blood sugar state recurring. While there is no specific chemical antidote for the entire class, regulatory guidelines describe specific pharmacological interventions to suppress insulin release. Elderly patients and those with impaired renal or hepatic function are explicitly noted as being at an increased risk of severe and prolonged reactions following overdose.

Therapeutic Uses of Dibenol

What Dibenol treats: main uses and benefits

Dibenol (Glibenclamide) is used for the long-term management of Type 2 Diabetes Mellitus in adults. It is a therapeutic option for treatment when lifestyle measures, such as diet and exercise, are not sufficient to maintain healthy glucose levels.

This medication is used as an adjunct to diet and exercise to address Type 2 diabetes when the body struggles to properly control the amount of sugar in the blood. Its primary therapeutic domains involve managing chronic hyperglycemia and stabilizing blood glucose levels.

Therapeutic Focus and Patient Benefit

This medication is used for managing the core metabolic issue of chronic and persistently elevated blood glucose. Clinically, Dibenol is relevant for easing the manifestations of high blood sugar, including excessive thirst and frequent urination, providing support that helps ease the overall symptom burden.

The medication's primary use is the treatment of Type 2 Diabetes Mellitus in adults, applied in scenarios where blood sugar reduction is required to manage symptoms that have become noticeable.

Sustained glucose control may support the reduction of long-term vulnerability to diabetes-related complications.

Quick Fact: Relief for Hyperglycemia-Related Symptoms Dibenol helps address symptom clusters that interfere with daily comfort by contributing to blood sugar reduction.


Indications at a Glance

Dibenol is used for the management of Type 2 Diabetes Mellitus in adults, specifically in patients requiring assistance with blood glucose reduction and support for managing symptoms related to systemic imbalance, such as polydipsia (excessive thirst) and polyuria (frequent urination).

Regulatory References

  1. NIH MedlinePlus overview on Glyburide

Eligibility and Restrictions for Use

The eligibility for Dibenol (Glibenclamide) is strictly defined by regulatory authorities and centers on specific population characteristics and underlying medical conditions. Dibenol is approved for use only by adults with Type 2 Diabetes Mellitus.


Official Eligibility Profile

Contraindicated Populations

The medicine is contraindicated and must not be used in patients with Type 1 Diabetes Mellitus or Diabetic Ketoacidosis (DKA). Absolute prohibition applies to patients with severe hepatic impairment or severe renal impairment, and those with Porphyria. Use is also forbidden if a known hypersensitivity to Glibenclamide or other sulfonamides exists, or if the patient is treated with Bosentan.

Reproductive Status and Age

Dibenol is contraindicated during pregnancy and for breastfeeding women; insulin is the mandated treatment in these situations. The standard tablet formulation is not recommended for children, as its safety and efficacy for the Type 2 Diabetes indication have not been established. Older adults require cautious, dose-adjusted treatment, initiated at the lowest available dose.

Conditional Use

Patients with mild to moderate renal or hepatic impairment require mandatory dose adjustments. Furthermore, during acute stress, such as major surgery or severe infection, Dibenol must be temporarily discontinued and substituted with insulin therapy.

What should I know about interactions with other medicines?

Dibenol Interactions with other medicines and products

Dibenol (Glibenclamide) interacts with numerous medicinal products, primarily by modifying its blood-glucose-lowering effect or by altering the exposure of co-administered drugs. Co-administration with Bosentan is formally contraindicated due to an officially documented risk of elevated liver enzymes.

Interactions are categorized by their effect on Dibenol's action:

  • Potentiation (Increased risk of hypoglycemia): This occurs with agents that have an additive effect, such as Insulin and other Oral Antidiabetics, and substances that inhibit metabolism, including ACE Inhibitors, NSAIDs, and certain CYP Inhibitors (e.g., Fluconazole).
  • Weakening (Increased risk of hyperglycemia): The effect is reduced by CYP Inducers such as Rifampin and Corticosteroids, which increase Dibenol’s clearance.

A specific timing rule is required for co-administration with Colesevelam to prevent reduced absorption; Dibenol must be administered at least four hours prior to the sequestrant. The combination with Beta-blockers is officially noted because these agents may mask the signs of hypoglycemia, making it harder to detect low blood sugar.

Official documents caution that alcohol intake may unpredictably potentiate or weaken the glucose-lowering action. Furthermore, patients with severe renal or hepatic impairment face a heightened risk of serious, prolonged hypoglycemic reactions due to elevated drug levels when interacting agents are co-administered.

Mechanism of Action

K ATP Channel Blockade and Cellular Trigger

Dibenol's active ingredient, Glibenclamide, acts within the domain of ion channel modulation by directly binding to the Sulfonylurea Receptor 1 (SUR1) subunit on pancreatic beta-cells. This high-affinity interaction leads to the closure of the ATP-sensitive Potassium Channel ( K ATP), inhibiting the outward flow of potassium ions. This initial molecular action initiates an electrical change—membrane depolarization—which precedes the signal for hormone release.


Calcium Cascade and Insulin Release

The drug engages the biological cascade responsible for hormone granule exocytosis. The resulting membrane depolarization from the channel blockade activates voltage-gated calcium channels, causing a substantial influx of calcium ions ( Ca^2+) into the cell cytoplasm. This influx acts as a direct signaling messenger, triggering the fusion of insulin granules with the cell membrane, which leads to the immediate and forced release of stored insulin into the bloodstream. The resulting elevated systemic insulin concentration facilitates glucose uptake and suppresses hepatic glucose output, leading to a physiological reduction in circulating glucose.


Mechanism Dependency and Constraints

This secretagogue mechanism is subject to specific biological constraints. It is strictly dependent on the presence of a sufficient population of viable, functional pancreatic beta-cells capable of synthesizing and storing insulin; therefore, the mechanism's functional capacity is contingent on the existing integrity of the endocrine system. Furthermore, chronic stimulation can potentially engage mechanisms that lead to a blunting of the secretory response over extended periods.

Dosage and Administration Information

Administration Principles

Dibenol, which contains the active substance Glibenclamide (Glyburide), is intended for oral administration in the form of a tablet. The standard adult dosing regimen is initiated at 2.5 mg to 5 mg once daily, with the maximum daily dose established at 20 mg for the standard (non-micronized) tablet formulation. Dosing adjustments occur in increments of 1.25 mg to 2.5 mg after a minimum of one week has passed to assess the physiological response.

Administration Feature General Guidelines
Dosing Frequency Typically once daily. Doses exceeding 10 mg (standard tablet) may be divided into two administrations.
Timing with Meals The medication is taken with breakfast or the first main meal of the day; it is important not to skip meals.
Missed Dose Rule If a dose is missed, it is generally skipped and the regular schedule resumed. The dose should not be doubled.

Population-Specific Dosing

Specific instructions govern the initial use of Dibenol in sensitive populations. For older adults and individuals with hepatic or renal impairment, a conservative initial dose of 1.25 mg (standard tablet) is recommended, reflecting a precautionary use pattern. Additionally, the oral suspension formulation, when used in specific pediatric populations (such as neonatal diabetes), involves administration via a graduated oral syringe.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Dibenol

The research evidence for Dibenol (Glibenclamide) stems primarily from clinical studies that measured changes in blood sugar markers. These studies include formal Randomized Controlled Trials (RCTs), comparisons against other medications, and follow-up reviews (meta-analyses) that summarize the collective data. The available research describes how Dibenol was studied, what patterns were observed, and where data still remain limited.


Evidence for Use in Type 2 Diabetes Mellitus in Adults

Research explored Glibenclamide's use in adults with Type 2 Diabetes. Studies monitored key biomarkers of metabolic control, including HbA1 c and Fasting Plasma Glucose (FPG). These clinical studies compared Glibenclamide to a placebo or to other oral diabetes medications. Research described measured HbA1 c levels in the observed populations. Evidence contributes to understanding symptom patterns, as outcomes related to physical discomfort (such as excessive thirst and urination) were generally tracked alongside measurements of other metabolic indicators.

Comparative evidence is lacking against other current diabetes medications over many years, and evidence quality varies across studies, making broad, long-term comparisons challenging.


Evidence for Use in Specific Genetic Forms of Diabetes

Research for a specific genetic form of Neonatal Diabetes provides focused evidence for this special group, often involving case reports and observational studies. Research examined the impact on metabolic markers, like HbA1 c, following a treatment change. Studies monitored HbA1 c measurements over time, and also monitored the reported status regarding insulin treatment. The results apply only to the populations studied and are not generalizable to other forms of diabetes.


What Remains Unclear in the Research

Scientific reviews highlight several areas where evidence quality varies across studies or where information is incomplete. A primary limitation is the lack of high-quality, large-scale comparative evidence against other current diabetes treatments. Findings were mixed and inconsistent in the studies examining Gestational Diabetes. Data for certain groups remain insufficient or comparative evidence is lacking. The evidence base provides context but does not offer individual predictions, and research does not determine whether an individual will respond similarly to the group patterns described.

Key Studies & References

  1. Efficacy of glyburide vs. metformin in preventing neonatal birth obesity in pregnancies complicated by gestational diabetes mellitus: a systematic review and meta-analysis
  2. Treatment of KCNJ11 and ABCC8 Permanent Neonatal Diabetes with Sulphonylureas (Specialized Clinical Guidance)

Frequently Asked Questions (FAQ)

Common questions about Dibenol (FAQ)

Q: What is the most common side effect listed for Dibenol?

According to the official product information, the most frequently reported adverse effect is low blood glucose ( hypoglycemia). Other frequently encountered effects include gastrointestinal disturbances (such as nausea, heartburn, or diarrhea) and weight gain.

Q: What should I tell my pharmacist about when getting a prescription for Dibenol?

Regulatory warnings mention the importance of disclosing any known allergy to Dibenol or other similar sulfa-containing drugs ( sulfonamides). It is also important to mention a history of diabetic ketoacidosis and any severe kidney ( renal) or liver ( hepatic) impairment, as official documents describe these as conditions of caution or contraindication.

Q: Does Dibenol have to be taken at the exact same time every day?

Official guidance states that the medication is typically administered once daily with breakfast or the first main meal of the day. Official administration instructions note the need to take the medication with a main meal, and warn against skipping meals. The guidance does not specify the need for the exact minute-by-minute consistency, but daily use with a meal is required.

Q: Why is Dibenol sometimes prescribed with another medication?

The medication is formally indicated as an adjunct to diet and exercise when those measures alone are insufficient for blood glucose control. In some cases, it may be used with other antidiabetic medications (such as metformin or insulin) to achieve further improvement in glycemic control (the overall management of blood sugar levels).

Q: Does Dibenol affect mood or cause depression?

While depression is not directly listed as a common adverse reaction, the main risk associated with the drug is low blood glucose ( hypoglycemia). Official documents note that this condition can cause neurological symptoms, which may include confusion, anxiety, nervousness, and emotional instability.

Q: Is Dibenol a stimulant or does it have sedative effects?

Official documents indicate that the medication has a moderate influence on the ability to drive and use machines. This warning is related to the risk of low blood glucose ( hypoglycemia), which may lead to reduced alertness, rather than the drug being formally classified as a central nervous system stimulant or sedative.

Q: What does the official patient information say about driving while taking Dibenol?

The official product information notes that due to the potential for low blood glucose ( hypoglycemia), the medication can moderately influence a person's ability to drive and safely operate machinery. This warning is based on the possible reduction in alertness that occurs with low blood sugar.

Q: Why does the Dibenol packaging warn about sun exposure?

Regulatory documentation specifies that sulfonylureas (the class of drug Dibenol belongs to) have been associated with photosensitivity reactions. This means that exposure to sunlight may cause an unexpected and severe sunburn or rash on the skin.

Q: Is Dibenol considered a blood pressure medicine or something else?

Dibenol is classified as an Oral Hypoglycemic Agent (OHA) and a sulfonylurea derivative. This means its primary purpose, according to regulatory documents, is to help the body manage high blood glucose levels by stimulating the release of insulin. It is not listed as a blood pressure medicine.

Q: Why do some people call Dibenol a 'maintenance drug'?

Official documents confirm that Dibenol is indicated for the long-term improvement of glycemic control in adults with Type 2 Diabetes Mellitus. This use for managing a chronic condition is why it is commonly referred to as a maintenance medication.

Q: Does Dibenol affect energy levels or cause fatigue?

A primary adverse effect of this medication, low blood glucose ( hypoglycemia), can present with physical symptoms. According to official documents, these symptoms may include feeling unusual tiredness or general weakness.

Q: Is Dibenol safe for people who have liver problems?

Use of Dibenol is contraindicated (prohibited) in patients who have severe hepatic impairment (serious liver disease). For individuals with non-severe liver impairment, regulatory warnings suggest conservative initial dosing and careful monitoring, as the drug is processed by the liver.

Q: Are there any known serious interactions with over-the-counter pain relievers and Dibenol?

Official warnings note that certain classes of non-prescription medication, such as Nonsteroidal Anti-inflammatory Drugs (NSAIDs) and salicylates (a drug class that includes some pain relievers), can interact with Dibenol. These substances may potentiate (increase) the effect of Dibenol, raising the risk of low blood glucose.

Q: What should I do if I think I took too much Dibenol?

Taking too much Dibenol can cause severe low blood glucose ( hypoglycemia). This is a serious event that may lead to symptoms like confusion, seizures, or coma. Immediate medical attention or contacting a poison control center is necessary, according to official guidelines.

Q: Is Dibenol known to cause weight gain or loss?

Official product information indicates that weight gain is one of the frequently reported adverse effects associated with the use of the active substance Glibenclamide.

Q: Can a person stop taking Dibenol suddenly?

Dibenol is intended to improve glycemic control (blood sugar management) in a long-term context. Abrupt discontinuation of the drug may lead to uncontrolled high blood glucose levels, which is a condition official documents recommend avoiding.

Q: Is Dibenol available as a generic medicine?

Yes, the active substance in Dibenol, which is Glibenclamide (also known as Glyburide), is widely available as a generic medicine approved by regulatory bodies.

Q: Has Dibenol been approved in countries outside of the US/EU?

Yes, regulatory documents for the active ingredient Glibenclamide are publicly available and demonstrate approval from numerous international health authorities beyond the United States and the European Union.

Q: Do you need to stop taking Dibenol before having surgery?

Official warnings and precautions state that the medication should be temporarily discontinued and substituted with insulin therapy during periods of acute stress, which includes major surgery or severe infections.

Q: Are skin rashes a common side effect of Dibenol?

Official data indicates that skin rashes, such as maculopapular or morbilliform eruptions, occur in approximately 1.5% of treated patients. This frequency means that skin rashes are reported, but they are not the most common adverse reaction.

Q: How often are the side effects of Dibenol reported?

Official documents classify adverse reactions by their frequency. For example, low blood glucose ( hypoglycemia) is classified as Very Common, while other serious effects like hepatitis or blood disorders are classified as Rare (occurring in less than 1 in 1,000 users).

Q: Is the brand name Dibenol more effective than the generic version?

Regulatory standards require that generic versions of a drug must demonstrate bioequivalence to the brand-name product to receive approval. Bioequivalence means the generic version is required to demonstrate equivalent rate and extent of absorption to the brand-name product.

Q: Why do doctors prescribe Dibenol instead of diet changes alone?

The medication is indicated as an adjunct to diet and exercise for adults with Type 2 Diabetes Mellitus when diet alone is inadequate to achieve blood glucose control. It is used to provide the necessary pharmacological support when lifestyle changes are not sufficient.

Q: Does Dibenol have an effect on kidney function?

The drug is primarily processed and eliminated by the kidneys. Official documents state that existing impairment of kidney function can elevate drug levels, which then increases the risk of prolonged low blood glucose ( hypoglycemia). Severe kidney impairment is a contraindication for use.

Q: What is the function of the inactive ingredients in Dibenol tablets?

Inactive ingredients, such as lactose monohydrate, microcrystalline cellulose, and magnesium stearate, are used to create the tablet's physical form. Their function is to provide the pill's bulk, maintain its stability, and ensure the active ingredient is released correctly in the body.

How should Dibenol be stored and disposed of?

Dibenol (glibenclamide) must be stored and disposed of according to specific regulatory requirements to maintain its stability and ensure safety.

Required Storage Conditions

Dibenol tablets must be stored at a temperature not exceeding 30°C. It is mandatory to protect the medication from both light and moisture. Consistent with all oral medications, Dibenol must be kept out of the sight and reach of children.

Official Disposal Instructions

Unused or expired Dibenol must be disposed of in accordance with local regulatory requirements. If a local drug take-back program is unavailable, guidelines suggest removing the medicine from its original container, mixing it with an undesirable substance such as used coffee grounds, and placing the mixture in a sealed bag before discarding it in the household trash. All personal information must be removed from the original packaging.

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

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