Glisulin

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Glisulin

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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 Glisulin

Glisulin is a fixed-dose combination oral medication used to manage Type 2 diabetes mellitus in adults. It is composed of two distinct active ingredients, Glibenclamide and Metformin, which work together to achieve improved glycemic control. This combination addresses the complex pathology of the disease through the simultaneous action of its components.


Quick Facts

Property Description
Active ingredients Glibenclamide, Metformin hydrochloride
Form Film-coated tablet (oral dosage form)
Pharmacological class Combination of Sulfonylurea (Glibenclamide) and Biguanide (Metformin)
General purpose Management of high blood sugar in Type 2 diabetes
Origin Synthetic compounds

Dual-Action Pharmacological Classification

Glisulin is classified as an antihyperglycemic agent, signifying its role in lowering elevated blood sugar. The drug's distinction lies in its two active ingredients: Glibenclamide, a second-generation sulfonylurea and an insulin secretagogue, and Metformin, a biguanide and insulin sensitizer. This fixed-dose combination is intended to improve glycemic control as an adjunct to diet and exercise. The use of this specific formulation targets the two main deficiencies in the disease: reduced insulin secretion and poor tissue response to insulin.


Composition and Therapeutic Rationale

The active ingredients, Glibenclamide and Metformin hydrochloride, are both well-established synthetic compounds administered via the oral dosage form. Glibenclamide encourages the pancreas to release more insulin, while Metformin primarily decreases the liver's production of glucose and enhances the body’s sensitivity to the insulin already present. Combining these two agents addresses two different, yet complementary, mechanisms of action to improve sugar control. This comprehensive approach in a single tablet is a key feature of the Glisulin formulation, particularly when monotherapy with a single agent, such as Metformin, is insufficient to maintain target glucose levels.

Regulatory References

  1. Glyburide and Metformin Drug Information

What side effects are possible with Glisulin?

Possible Side Effects and Safety Information

Glisulin's official safety profile is based on the documented adverse reactions of its two components, Glibenclamide (sulfonylurea) and Metformin (biguanide), as classified in government regulatory documents.


Frequency and System Classification

Adverse reactions are formally grouped by the affected System-Organ-Class (SOC) and by frequency:

  • Very Common (Affecting more than 1 in 10 users): Gastrointestinal disorders, including diarrhoea, nausea, vomiting, abdominal pain, and loss of appetite. These effects are often noted to be more common at the start of treatment and typically resolve spontaneously.
  • Common: Taste disturbance (often metallic taste) and reduced Vitamin B12 levels, which is associated with long-term Metformin exposure.
  • Rare/Very Rare: Blood and Lymphatic System Disorders (e.g., Leukopenia, Thrombocytopenia), Allergic skin reactions ( pruritus, urticaria), and Hepatitis.

Serious Adverse Reactions and Safety Constraints

The regulatory profile highlights risks considered serious even if rare:

  • Lactic Acidosis: A Very Rare but potentially critical metabolic complication, primarily associated with the Metformin component. This risk is greatly amplified in the presence of impaired kidney function or acute conditions.
  • Severe Hypoglycemia: A known risk associated with the Glibenclamide component, particularly in older adults or during periods of undereating.

Use is strictly contraindicated in cases of severe renal impairment (e.g., eGFR < 30 mL/min/1.73m^2), acute conditions that may severely compromise renal function (like dehydration or severe infection), and acute alcohol intoxication.

Overdose and Emergency Response

Overdose and When to Seek Help

Overdose with Glisulin, a fixed-dose combination of Glibenclamide and Metformin, can result in two distinct and severe metabolic conditions that require immediate emergency intervention. The Glibenclamide component overdose is formally documented to cause severe and prolonged Hypoglycaemia (dangerously low blood sugar). The Metformin component overdose is documented to lead to Lactic Acidosis, a life-threatening complication with a high fatality rate.

Lactic Acidosis often has a subtle onset, presenting with nonspecific symptoms such as malaise, muscle pain, increasing somnolence, and respiratory distress. Physiological findings associated with severe toxicity include hypotension and a significant decreased blood pH alongside elevated blood lactate. The risk of Lactic Acidosis is noted to be increased in patients with renal impairment and in the elderly.

Official Emergency Actions

The official regulatory guidance mandates that patients must seek immediate medical attention and discontinue Glisulin immediately if any symptoms of Lactic Acidosis are suspected. Patients who have collapsed or cannot be awakened require immediate contact with emergency services. Supportive treatment described in official labeling includes instituting general supportive measures. For severe Metformin accumulation, prompt hemodialysis is the documented procedural intervention recommended for removal and correction of acidosis, as no specific antidote is known.

Therapeutic Uses of Glisulin

What Glisulin Treats: Main Uses and Benefits

Glisulin is a therapeutic option for managing certain conditions, specifically type 1 diabetes mellitus and type 2 diabetes mellitus, in adults and children. It is commonly used to help manage symptoms related to systemic imbalance and symptoms that interfere with daily functioning. The medicine is applied in addressing conditions involving episodic or fluctuating manifestations. The medication assists with managing blood glucose changes associated with mealtimes in both patient populations.

This medicine is applied across domains where additional symptomatic support is needed, often in clinical settings that involve acute or unstable symptom patterns associated with mealtimes. Its application is relevant for managing symptoms that interfere with daily comfort, providing supportive relief when symptoms interfere with routine activities. It may be part of symptomatic management, supporting patients during difficult episodes by easing distress. It contributes to maintaining a sense of stability when symptoms are more noticeable, supporting general well-being during symptomatic phases.

Quick Fact: Supports Management of Symptoms related to systemic imbalance

Eligibility and Restrictions for Use

Who Can and Cannot Use Glisulin?

Glisulin (Glibenclamide/Metformin) eligibility is defined by official regulatory documents, strictly limiting use to Adults with Type 2 Diabetes Mellitus whose condition is inadequately managed by monotherapy.


Contraindications and Restrictions

Official labeling contraindicates Glisulin use in several populations and medical conditions. The most critical exclusions relate to organ function and acute metabolic stability.

Contraindicated Populations Restricted Conditions (Use Avoided/Not Recommended)
Patients with Severe Renal Impairment (eGFR < 30 mL/min/1.73 m^2). Moderate Renal Impairment (eGFR 30 to 45 mL/min/1.73 m^2) [Initiation Not Recommended].
Patients with Metabolic Acidosis (including DKA) or acute conditions causing Tissue Hypoxia (e.g., heart failure). Hepatic Impairment [Use Should Be Avoided].
Individuals with Type 1 Diabetes Mellitus. Geriatric patients 80 years old [Avoid initiation unless renal function is confirmed].
Known Hypersensitivity to Metformin, Glibenclamide, or other sulfonamides. Use during Pregnancy [Insulin is the preferred agent; discontinuation required before expected delivery].

Eligibility is further restricted by procedures; the drug must be temporarily discontinued for patients undergoing iodinated contrast imaging in specific risk groups. Glisulin use in the Pediatric Population is not established.

What should I know about interactions with other medicines?

Interactions with other medicines and products

This section describes documented interaction patterns for Glisulin (Glibenclamide/Metformin) based on official government regulatory sources.

Contraindicated Combinations

  • Iodinated Contrast Media (Intravascular): Co-administration is explicitly prohibited due to the risk of acute renal function alteration, which leads to Metformin accumulation and a high risk of lactic acidosis.
  • Excessive Alcohol Intake (Ethanol): Formally restricted as it potentiates the risk of both lactic acidosis (Metformin component) and severe hypoglycemia (Glibenclamide component).

Drug-Drug Interaction Patterns

  • Exposure Modification: Co-administration with inhibitors of renal transporters (e.g., Ranolazine, Dolutegravir, Cimetidine) reduces the Metformin component’s clearance via inhibition of OCT2 and MATE transporters, significantly increasing its plasma concentration. The Glibenclamide component is metabolized by CYP3A4 and CYP2C9; interactions with enzyme inhibitors may increase its systemic exposure.
  • Pharmacodynamic Interference: Combining Glisulin with other antidiabetic agents results in an additive effect, increasing the risk of hypoglycemia. Conversely, agents such as Glucocorticoids or certain Diuretics may exert pharmacodynamic antagonism, potentially leading to a loss of glycemic control.
  • Risk Reinforcement: Medicines that impair renal function (e.g., NSAIDs, certain diuretics) increase the risk of Metformin accumulation and subsequent lactic acidosis.

Timing-Based Requirements

  • Procedural Interruption: Glisulin must be temporarily discontinued at the time of, or prior to, major surgery or procedures involving iodinated contrast media. Administration must be withheld for 48 hours afterward, contingent on re-evaluation and confirmation of normal renal function. Interaction risk is also heightened in patients with renal or hepatic impairment due to decreased clearance.

Mechanism of Action

Modulating Liver and Peripheral Metabolism

Glisulin exerts a core pharmacodynamic mechanism through a dual action on cellular energy regulation. In the liver, the compound acts as an inhibitor of the enzyme Mitochondrial Glycerol-3-Phosphate Dehydrogenase (GPDH), which modulates the substrate flow into the gluconeogenesis pathway. Concurrently, Glisulin functions as an activator of Adenosine Monophosphate-activated Protein Kinase (AMPK) in muscle and adipose tissue. This action modulates metabolic flow by reducing hepatic glucose output and increasing the sensitivity of peripheral tissues to insulin-mediated glucose transport.


Interfering with Intestinal Glucose Absorption

Glisulin also exhibits a distinct peripheral mechanism within the gastrointestinal tract. The compound acts by modulating the activity of the Intestinal alpha-glucosidase enzymes. This specific interaction affects the breakdown of complex carbohydrates in the small intestine. This results in the modulation of absorption kinetics, leading to a moderated rate of glucose entry into the circulation following a meal.

Dosage and Administration Information

Administration Overview

Glisulin is typically administered as an oral tablet. For the medication to work effectively, it should be integrated into a routine that aligns with a healthcare provider's broader management plan. Consistency in the timing of intake is a standard part of maintaining stable levels of the medication in the bloodstream.

Methods of Intake

The tablets are generally swallowed whole with a glass of water. It is common practice to take the medication during or immediately after a meal. This timing is often utilized to minimize the potential for gastrointestinal discomfort, which can sometimes occur when the medication is taken on an empty stomach.

Formulations

Glisulin may be available in different formulations, such as immediate-release or extended-release versions.

  • Immediate-release tablets: These are often taken multiple times throughout the day, usually with meals.
  • Extended-release tablets: These are designed to release the medication slowly over a longer period and are typically taken once daily, often with an evening meal. These tablets must be swallowed whole and should not be crushed, chewed, or broken, as doing so can interfere with the intended release mechanism.

Missed Occurrences

In the event that a scheduled intake is missed, the standard approach is to resume the routine at the next scheduled time. Doubling the amount taken to compensate for a missed application is generally avoided.

Storage and Handling

Proper storage is necessary to maintain the integrity of the medication. Glisulin should be kept at room temperature, away from excessive heat, moisture, and direct light. Keeping the tablets in their original packaging until use helps protect them from environmental factors.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Glisulin

Glisulin is a fixed-dose combination of two medications, Glibenclamide and Metformin. The official research evidence supporting Glisulin describes the types of clinical studies performed, the patient populations examined, and the overall patterns observed during these evaluations.


1. Evidence for Use in Type 2 Diabetes Mellitus

Research for Glisulin has largely relied on Randomized Controlled Trials (RCTs). These are often comparative studies where patient groups are assigned to receive Glisulin, one of the individual components alone, or sometimes another anti-diabetic agent. The research focused on populations whose blood sugar levels were inadequately controlled by other treatments, such as diet and exercise alone or treatment with only one medication.

Studies have focused on observing changes in key glycemic biomarkers. Researchers primarily track measurements of Glycated Hemoglobin ( HbA1c), which provides an overview of average blood sugar over two to three months. They also monitored Fasting Plasma Glucose (FPG) and blood sugar levels measured after meals (Post-prandial Glucose or PPG). Study reports describe changes measured in HbA1c over the study periods. The evidence describes the proportion of patients in the observed populations whose HbA1c levels aligned with specific target goals in the study.


2. Evidence Comparing Glisulin to Other Therapies

Research examined how Glisulin compares to its individual components. Studies evaluated the fixed-dose combination against giving patients Glibenclamide alone or Metformin alone. This research was often applied in settings examining patients whose blood sugar remained inadequately controlled while on monotherapy. These comparative studies describe patterns related to the shifts in glycemic biomarkers in patients evaluated on the combination.


3. Long-Term Studies and Durability of Follow-Up

The majority of primary efficacy research used for regulatory assessment was conducted over short- to intermediate-term follow-up periods, typically lasting between 12 weeks and 52 weeks (up to one year). This timeframe allows researchers to observe changes in blood sugar markers. These trials provided context into short-term changes; however, the follow-up durations were limited. This means the long-term outcomes and the persistence of the observed HbA1c patterns beyond the study period are not fully established by the core registration trials. Scientific literature does include modeling studies that attempt to estimate potential long-term effects by extrapolating data from the shorter trials.


4. What is Still Uncertain About Glisulin

While research has explored the measurements of blood sugar markers, there are still areas where data are limited. Research focusing specifically on the fixed-dose combination's association with long-term patient-important outcomes, such as cardiovascular event rates, is less prevalent compared to the studies on the immediate blood sugar effects. Research provides context about group patterns but does not determine whether an individual patient will respond similarly. Additionally, subgroup findings for certain populations, such as those with multiple co-occurring health conditions, are uncertain, as results apply only to the specific populations studied in the trials.

Frequently Asked Questions (FAQ)

Common questions about Glisulin (FAQ)

Q: Is Glisulin similar to other medicines with different names?

A: Glisulin is a fixed-dose combination containing two established therapeutic compounds, Glibenclamide and Metformin. Official product information describes Glibenclamide as a sulfonylurea and Metformin as a biguanide, meaning Glisulin is composed of two common types of medication.


Q: How quickly does Glisulin leave the body?

A: The time it takes for a substance to clear the body is related to its elimination half-life. Official pharmacological documents indicate that the half-life for the Metformin component is around 6.5 hours, while the Glibenclamide component is approximately 4 to 11 hours.


Q: What are some common side effects people report with Glisulin?

A: Regulatory studies indicate that very common side effects (affecting more than 1 in 10 users) include gastrointestinal issues such as diarrhoea, nausea, and abdominal pain. Common side effects reported by a smaller percentage of users include taste disturbance, headache, and dizziness.


Q: What are some of the long-term effects of using Glisulin?

A: Long-term use of the Metformin component is commonly associated with reduced levels of Vitamin B12. Regulatory guidance describes that monitoring for Vitamin B12 deficiency may be appropriate during extended treatment.


Q: What is the general safety classification of Glisulin?

A: Glisulin is classified by regulatory bodies as a prescription-only medication and is not listed as a controlled substance.


Q: Is Glisulin addictive?

A: Official sources confirm that Glisulin is not a controlled medication. It does not have the characteristics of substances that are classified as addictive.


Q: What is the proper way to store Glisulin?

A: Official labeling states the tablets should be stored at Controlled Room Temperature, typically 20°C to 25°C. The container should be kept tightly closed and the tablets protected from both light and moisture to maintain product stability.


Q: What information should I read before starting Glisulin?

A: Official documents describe the risks of serious complications like lactic acidosis and severe hypoglycemia, and list specific contraindications that restrict its use for certain patients.


Q: Can Glisulin be taken by women who are pregnant or planning to be?

A: For women who are pregnant, the official regulatory guidance states that insulin is the preferred treatment agent. Therefore, Glisulin is generally not recommended for use during pregnancy.


Q: Does Glisulin work right away, or does it take time?

A: The Metformin component reaches a stable concentration in the bloodstream within approximately 24 to 48 hours. The full effect on long-term blood sugar control is typically evaluated over several weeks of continuous use.


Q: How long do the effects of Glisulin typically last?

A: The elimination half-lives of the active components are in the range of 4 to 11 hours. However, the continuous anti-hyperglycemic action is supported by the prescribed dosing schedule.


Q: Do many people take Glisulin long-term?

A: Glisulin is indicated for the chronic management of Type 2 diabetes. Studies have examined populations using the Metformin component for durations that exceed six years, indicating its use in the long-term management of this chronic condition.


Q: Are there any specific vitamins or supplements that interact with Glisulin?

A: Regulatory guidance notes potential risks regarding the use of herbal remedies and other supplements. Official sources often state that there is insufficient data available to confirm whether specific interactions are safe.


Q: Is it possible to take Glisulin with food?

A: Official documents state that the tablets are taken with meals. This practice helps to reduce common gastrointestinal side effects and is intended to help prevent low blood sugar (hypoglycemia).


Q: Does Glisulin have any effects on blood pressure?

A: While studies on Glibenclamide have suggested some associations with cardiovascular reactivity, overall mean 24-hour blood pressure measurements in comparative studies did not differ significantly between the Glibenclamide and Metformin components.


Q: Are there different strengths of Glisulin available?

A: Yes, official product information confirms that the fixed-dose combination is generally manufactured in multiple strengths. These strengths combine different milligram amounts of the Glibenclamide and Metformin components.


Q: Are there any restrictions on driving or operating machinery while taking Glisulin?

A: Regulatory documents describe that the risk of low blood sugar (hypoglycemia) may affect a patient's alertness or coordination, particularly when Glisulin is used in combination with other anti-diabetic agents.


Q: Is Glisulin known to cause headaches?

A: Yes, headache is listed in regulatory documents as a Common side effect. This means it was reported by 1% to 10% of users during clinical evaluations.


Q: Does Glisulin affect blood sugar levels if I don't have diabetes?

A: Glisulin is classified as an antihyperglycemic agent, meaning its function is to lower elevated blood sugar levels. Official regulatory labeling specifies that it is indicated for use only in adults who have Type 2 Diabetes Mellitus.


Q: Do you need a prescription for Glisulin?

A: Yes, Glisulin is regulated by government agencies as a prescription-only medication.


Q: Does Glisulin require any special monitoring or testing?

A: Official documents describe the need for monitoring of renal (kidney) function. This testing is recommended prior to treatment initiation and periodically thereafter, due to the increased risk of complications if kidney function is impaired.

How should Glisulin be stored and disposed of?

How to Store and Dispose of Glisulin?

The storage and disposal of Glisulin (Glibenclamide/Metformin) must strictly adhere to regulatory requirements to maintain product stability and safety.

Official Storage Conditions

Storage Requirement Specification (As per Official Labeling)
Temperature Store at Controlled Room Temperature (typically 20 C to 25 C) and away from excess heat.
Protection Keep the container tightly closed and protect the tablets from light and moisture.
Location Must be kept in the original container and stored out of the sight and reach of children.

Glisulin tablets must not be used after the printed expiry date. Used or expired medicine must be disposed of according to local regulatory requirements. The FDA recommends using a drug take-back program or following specific guidance for disposal in household trash to prevent environmental contamination.

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

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