Reglide

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Reglide

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 Reglide

Property Description
Active ingredient Repaglinide
Form Tablet (Oral)
Pharmacological class Meglitinides
Common use Managing high blood sugar levels in Type 2 diabetes
Origin Synthetic (Benzoic acid derivative)

Reglide is a pharmaceutical preparation whose active ingredient is Repaglinide, an oral blood glucose-lowering drug used in the management of high blood sugar. It is classified within the pharmacological class of meglitinides, which are defined as short-acting insulin secretagogues. This classification establishes the medication as a therapeutic tool for controlling elevated glucose levels in individuals diagnosed with Type 2 diabetes mellitus. Repaglinide promotes rapid insulin secretion following meals, a mechanism that addresses postprandial hyperglycemia. Meglitinides work to increase insulin release, which assists in managing post-meal glucose spikes.


Composition, Form, and Origin

Reglide is provided as a tablet, constituting a single-agent product intended for oral administration. The active substance, Repaglinide, is a synthetic benzoic acid derivative, making it a chemically manufactured compound. As an oral dosage form, the preparation consists of the active ingredient combined with necessary solid pharmaceutical excipients required to create the tablet structure. The drug’s identity as a single-agent product means it contains only Repaglinide to achieve its therapeutic effect, ensuring a consistent delivery of the core chemical entity through the common route of administration.


General Purpose and Mechanism Principle

The general purpose of Repaglinide is to lower blood glucose levels by selectively promoting insulin release when needed most. Its mechanism focuses on stimulating the beta-islet cells in the pancreas to discharge the hormone. This specific action profile is defined by a fast onset of action and a short duration of action, characteristics that allow the medication to specifically target and control the sharp, short-term spikes in high blood sugar that directly follow meals. A typical, neutral use scenario involves a patient with Type 2 diabetes using the medication to manage the elevated glucose levels resulting from a meal.

Regulatory References

  1. MedlinePlus Drug Information on Repaglinide
  2. NIDDK Diabetes Health Information

What side effects are possible with Reglide?

Possible Side Effects and Safety Information

The safety profile of Reglide (Repaglinide) is based on classifications detailed in official regulatory documents, such as the FDA Prescribing Information and the EMA Summary of Product Characteristics (SmPC). The primary and most frequently reported adverse reaction is hypoglycemia (low blood sugar), which is officially classified as a Common event.

While low blood sugar is the most common risk, regulatory documents also detail less frequent but documented effects categorized by System-Organ Class (SOC):

Classification System-Organ Class (SOC) Specific Adverse Reactions
Common Infections and Infestations Upper respiratory tract infection (URI), sinusitis
Common Gastrointestinal disorders Abdominal pain, diarrhea, nausea
Common Musculoskeletal disorders Arthralgia (joint pain), back pain
Very Rare Hepatobiliary disorders Abnormal hepatic function, increased liver enzymes

Official labeling recognizes the potential for severe outcomes, including hypoglycemic coma or hypoglycemic unconsciousness, classified as reactions of Not Known frequency. Safety records also include reports of acute coronary syndrome, which is classified as Rare, though its causal relationship remains uncertain.

Population-Specific Constraints and Limitations

Official safety documents define specific limitations on use. Reglide is formally contraindicated (must not be used) in patients with severe hepatic impairment (severe liver problems) due to an increased risk of severe hypoglycemia. It is also contraindicated for concurrent use with the drug gemfibrozil. Additionally, safety and efficacy have not been established for the pediatric population. The label notes that conditions of physiological stress, such as fever, infection, or surgery, may temporarily lead to a loss of blood sugar control.

Overdose and Emergency Response

A Repaglinide overdose, due to its function as an insulin secretagogue, results primarily in prolonged and severe hypoglycemia (low blood glucose). The regulatory documentation classifies this as the critical risk that defines the required emergency response. Initial manifestations of overdose are symptoms of hypoglycemia, which may include sweating, trembling, dizziness, and headache. Progression to severe toxicity involves neuroglycopenic signs such as profound confusion, blurred vision, slurred speech, and potentially life-threatening outcomes like hypoglycemic coma and seizures.

Official regulatory guidance mandates that immediate medical attention must be sought, or emergency services contacted, if severe symptoms like loss of consciousness, seizures, or the inability to be aroused are observed. The required management is symptomatic and supportive, focused on the rapid correction of low blood glucose using oral carbohydrates or intravenous glucose/dextrose solution, as no specific antidote is known for the drug itself.

A critical component of regulatory-mandated care is a prolonged period of hospital observation, often extending 24 to 48 hours, due to the established risk of recurring hypoglycemia after initial treatment. Additionally, official labeling notes that patients with impaired hepatic function may experience more prolonged effects due to reduced drug clearance.

Therapeutic Uses of Reglide

Quick Facts: Reglide

  • Primary Use: Management of blood sugar (glucose) levels in adults with type 2 diabetes mellitus.
  • Therapeutic Goal: To help achieve improved glycemic control, reducing high blood sugar.
  • Treatment Context: Used alongside a supervised program of diet management and physical activity.
  • Combination Use: May be prescribed as a supplemental option for individuals whose blood sugar is not adequately managed by metformin alone.

Reglide is a therapeutic option used to help manage the condition of type 2 diabetes mellitus in adult patients. Its primary benefit is to assist in lowering elevated blood glucose levels. This is a key step in helping to achieve and maintain better overall glycemic control in adults with type 2 diabetes mellitus.

The medication is typically administered as an adjunct to professional diet recommendations and a regular exercise regimen. By helping the body better regulate glucose levels, Reglide may support patients in reducing the long-term risk of complications associated with elevated blood sugar.

In cases where initial therapies, such as diet, exercise, and certain other anti-diabetes medications, have not resulted in satisfactory blood sugar regulation, Reglide may be prescribed. It is a non-insulin option utilized to complement and support the existing management plan.

Regulatory References

  1. NIH MedlinePlus guidance

Eligibility and Restrictions for Use

Official Eligibility Rules for Reglide (Repaglinide)

Reglide is indicated for use only in adults with Type 2 Diabetes Mellitus (T2DM) to improve blood sugar control. Eligibility is strictly defined by regulatory documents, which establish clear restrictions and absolute contraindications.


Contraindicated Populations Special Caution/Restriction Required
Type 1 Diabetes Mellitus (T1DM) Children under 18 years (Use not established)
Diabetic Ketoacidosis (DKA) Patients over 75 years (Use not recommended in EU/UK)
Known Hypersensitivity to repaglinide Pregnancy (Avoided; safety not established)
Concomitant use with Gemfibrozil Lactation (Not recommended)
Severe Hepatic Function Disorder (Severe Liver Impairment) Renal Impairment (Use with caution)

Official labeling contraindicates the medicine in those conditions where it is ineffective (T1DM, DKA) or where drug exposure is dangerously increased (concomitant Gemfibrozil). It is also not recommended for use in the pediatric population (below 18 years) due to a lack of established safety data, and caution is required when used in patients with renal impairment. Use during pregnancy or breastfeeding is officially not recommended.

What should I know about interactions with other medicines?

Reglide (Repaglinide) interactions are officially classified based on pharmacokinetic (PK) and pharmacodynamic (PD) principles documented in government regulatory sources. The PK interactions involve modulation of the key metabolic enzymes CYP2C8 and CYP3A4, and the hepatic uptake transporter OATP1B1, resulting in altered plasma concentrations.


Contraindications and Exposure Restrictions

Co-administration of Gemfibrozil is formally contraindicated due to the major risk of substantially increased Repaglinide systemic exposure. Combination use with NPH-insulin or sulfonylureas is also documented as not indicated or contraindicated. The use of strong metabolic inhibitors such as Ciclosporin or Clopidogrel necessitates a mandatory dose restriction to mitigate the increased risk of exposure.


Pharmacokinetic and Pharmacodynamic Effects

Substances classified as strong enzyme inhibitors (e.g., Trimethoprim) increase Repaglinide plasma concentrations, while strong inducers (e.g., Rifampicin, St John's Wort) decrease its blood glucose-lowering effect. Pharmacodynamic interactions include substances like Non-selective Beta Blockers and Salicylates, which may enhance the hypoglycaemic effect. Regulatory information also documents that alcohol may potentiate this effect, and co-administration with a meal decreases the drug's area under the curve (AUC).


Population-Specific Note

Severe Hepatic Impairment is a documented contraindication because the condition impairs metabolism, leading to a risk of higher systemic exposure and increased potential for severe hypoglycemic episodes.

Mechanism of Action

Regulation of Pancreatic Ion Channels

Reglide initiates its action by specifically binding to and inhibiting ATP-sensitive potassium channels (KATP channels) on the membrane of pancreatic beta cells. This mechanism is crucial as the closure of the channel blocks the efflux of potassium ions, thereby causing the cell membrane to rapidly depolarize. This change in the cell's electrical state is essential for shaping the drug’s rapid and transient effect on circulating glucose levels.


Calcium-Mediated Secretion Cascade

The cellular depolarization caused by channel closure leads to the opening of voltage-gated calcium channels. The resulting rapid influx of calcium ions (Ca^2+) acts as a direct molecular trigger. This increase in intracellular calcium promotes the fusion of insulin-containing granules with the cell membrane, resulting in the exocytosis (release) of stored insulin, which provides the necessary increase in hormone availability for glucose clearance.


Modulation of Endogenous Insulin Release

The overall physiological consequence is the targeted stimulation and swift, transient release of the body’s endogenous insulin. This focused mechanism contributes to the rapid and non-sustained physiological adjustment of circulating glucose concentration by resulting in enhanced glucose uptake by peripheral tissues.

Dosage and Administration Information

How to Use Reglide

Reglide (Repaglinide) is administered exclusively by the oral route as a tablet. Its usage is defined by a meal-dependent schedule, requiring the medicine to be taken preprandially (before eating). Standard instructions advise taking the dose within 30 minutes before a meal, leading to a frequency of two to four times daily, which corresponds directly to the patient's major meal schedule.

Dosing is adjusted based on an individual's glycemic status and response. Initial doses typically range from 0.5 mg to 2 mg before each meal. Subsequent dosage changes are made cautiously, with a minimum interval of at least one week between adjustments. The maximum single permitted dose is 4 mg, and the total daily dose is capped at 16 mg.

A critical procedural instruction is the meal contingency rule: if a major meal is skipped, the corresponding dose of Reglide must also be skipped. This rule governs correct administration and adherence to the drug’s rapid action profile. Furthermore, a specific parameter exists for a lower starting dose of 0.5 mg before each meal for patients with severe renal impairment to account for altered drug clearance. Usage in pediatric patients (under 18 years) is not established and is therefore not recommended.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Reglide

Research for Repaglinide has primarily focused on its use in adult patients with Type 2 diabetes mellitus. The evidence base relies heavily on Randomized Controlled Trials (RCTs) and Systematic Reviews, where patients were assigned by chance to receive either Repaglinide, an inactive placebo, or another type of anti-diabetes medication. These trials were designed to explore the drug’s use on key blood sugar markers like Glycosylated Hemoglobin (HbA1c) and post-meal glucose levels.

Research Focused on Glycemic Control Outcomes

Studies explored how Repaglinide was associated with patterns of change in blood sugar control. Research examined outcomes related to systemic imbalance by monitoring HbA1c, which reflects average blood sugar, and Postprandial Blood Glucose (PPBG), a measurement of glucose levels after meals. The research describes how these levels were observed in study populations during the treatment period, often when Repaglinide was used alone or added to other treatments like metformin. The research base examining short-term changes in these surrogate markers was monitored across the major RCTs and systematic reviews.

Long-Term Research and Durability of Effect

Clinical trials evaluating Repaglinide have mostly provided short-term to intermediate-term data, meaning many key studies followed patients for periods up to about one year. While research has explored the drug's short-term effects, the long-term effects are not fully established. There is limited information concerning the durability of blood sugar control over many years of continuous use. Furthermore, the long-term characterization documented in the literature of whether Repaglinide is associated with a change in major macrovascular outcomes, such as heart attack or stroke, or overall mortality, remains limited.

Evidence in Special Study Populations

Research has explored the use of Repaglinide in various subgroups, including cohorts of older adults and patients with co-existing conditions, such as mild to moderate renal impairment (kidney issues). However, data remain insufficient or limited for patients over the age of 75 and for those with severe impairment of the liver (hepatic impairment). Therefore, the subgroup findings are uncertain in these specific contexts.

Key Studies & References

  1. Optimizing insulin secretagogue therapy in patients with type 2 diabetes: a randomized double-blind study with repaglinide (Used for PPBG focus and mealtime dosing rationale)

Frequently Asked Questions (FAQ)

Common questions about Reglide (FAQ)

Q: How quickly can someone expect to feel the effects of Reglide?

A: Official documents state the medication is rapidly absorbed, with maximum concentration typically reached within one hour of administration. This pharmacokinetic profile is a characteristic that aligns with its use for managing post-meal glucose spikes.

Q: If a dose of Reglide is missed, what is generally recommended?

A: Official patient guidance states that if the patient remembers when they have just begun to eat a meal, the dose can still be taken. However, if the patient has finished eating, the missed dose should be skipped entirely, and the regular schedule should be continued. Official guidance stresses that a double dose should not be taken to make up for a missed dose.

Q: What is the general expectation for how Reglide is supposed to improve the treated condition?

A: Reglide is intended to help improve overall blood sugar control in people with Type 2 diabetes. Studies examined the drug’s association with patterns of change in blood sugar markers like Glycosylated Hemoglobin (HbA1c) and Postprandial Blood Glucose (PPBG). Official information notes that an improvement in HbA1c is commonly observed after approximately one month of therapy.

Q: What is the process for discontinuing Reglide use?

A: Official patient information emphasizes that stopping the use of Reglide may lead to the desired therapeutic effect not being achieved, and the underlying condition may worsen. Any decision to stop taking this medicine or to change the treatment must be made in consultation with a healthcare professional.

Q: Does Reglide interact with alcohol consumption?

A: Regulatory sources document that alcohol consumption may affect a person's blood sugar levels and may increase the risk of developing low blood sugar (hypoglycemia). Any use of alcoholic beverages should be discussed with a healthcare professional to understand the potential effects.

Q: Is Reglide associated with weight gain or loss?

A: Official documentation from clinical trials indicates that weight gain has been reported as one of the documented adverse reactions associated with the use of Reglide.

Q: What is the main difference in how Reglide is taken compared to other treatments for this condition?

A: Reglide is classified as a short-acting insulin secretagogue, known for its rapid onset and short duration of action. The key difference in administration is its meal-dependent schedule, which requires it to be taken immediately before or up to 30 minutes before each major meal. This specific timing is key, as the drug's short action profile is intended to target the sharp, short-term spikes in blood sugar that follow a meal.

Q: How long does the effect of a single dose of Reglide typically last?

A: Reglide is characterized by a short duration of action in the body. The goal is to cause a swift, transient (short-lived) release of insulin to cover the post-meal period, with effects returning to baseline rapidly after the meal has been metabolized, as described in regulatory summaries.

Q: What is the main difference between Reglide and other similar treatments?

A: Reglide belongs to the meglitinide class, whose active ingredient is officially described as providing a rapid onset and short duration of action. The rapid onset and short duration of action are the characteristics that differentiate this drug’s use profile from other types of oral diabetes medications, making it suitable for targeting postprandial (after-meal) glucose excursions.

Q: Are there any specific foods or drinks to avoid while taking Reglide?

A: Official information documents that substances affecting how the drug is processed in the body may cause an interaction. This includes Grapefruit or grapefruit juice, which may increase the blood levels of the active ingredient. Regulatory information suggests that the need to limit or avoid certain foods should be discussed with a healthcare professional.

Q: What kind of studies support the use of Reglide?

A: The use of Reglide is supported by evidence primarily from Randomized Controlled Trials (RCTs) conducted in adult patients with Type 2 diabetes. These trials examined the drug’s effectiveness on blood sugar markers like HbA1c when used alone or in combination with other anti-diabetes treatments.

Q: Can Reglide be taken at the same time as common over-the-counter pain relievers?

A: Official patient counseling information suggests that other medicines, including non-prescription options such as aspirin and cold or flu medicines, be discussed with a healthcare professional before use due to potential interactions. This is due to the possibility that these products could affect Reglide's blood sugar-lowering effect.

Q: Is it common for people to switch from a different drug to Reglide?

A: Research summaries indicate that a switch to the active ingredient may be considered for specific patient groups, such as some older adults, where the short action profile may be beneficial. Any change to treatment requires consultation with a healthcare professional.

Q: Does Reglide require any special monitoring or lab tests while being used?

A: Yes, official guidance recommends regular monitoring. To determine the drug's effectiveness and an individual's response, a healthcare professional will typically need to check blood sugar levels and glycosylated hemoglobin (HbA1c) regularly during treatment.

Q: What is the maximum duration Reglide has been studied for continuous use?

A: Regulatory sources state that while the core evidence base provides short- to intermediate-term data, clinical studies have followed some patients for continuous use for periods up to 52 weeks (approximately one year). Long-term safety and effectiveness beyond this duration are not fully established in the primary research.

Q: Do older adults typically respond differently to Reglide than younger patients?

A: Official regulatory information notes that caution and careful monitoring are necessary in older adults. While no mandatory dosage adjustment is typically required, use is generally not recommended for patients over 75 years of age due to limited available data in this specific cohort.

Q: What does the research say about the likelihood of needing to stop Reglide due to side effects?

A: Studies on combination therapies that include the active ingredient have noted that the rate of patients discontinuing treatment specifically due to adverse events was observed to be slightly more common compared to some other treatment regimens examined in the research.

Q: Does Reglide have any known interactions with herbal supplements?

A: Official safety documentation specifically mentions that the herbal supplement St John's Wort is a known enzyme inducer that may decrease the blood glucose-lowering effect of Reglide. All other supplements must be discussed with a doctor before use.

Q: What should I do if I suspect an interaction between Reglide and another medicine?

A: Regulatory guidance advises patients to contact a healthcare professional immediately if their condition changes or if they experience increased side effects after adding a new medicine. This change may be a sign of a drug-to-drug interaction.

Q: Are there any specific tests that determine who can or cannot use Reglide?

A: Eligibility to use the drug is partially determined by testing and diagnosis. Before use, the status regarding Type 1 diabetes or Diabetic Ketoacidosis (DKA) must be known as these are contraindications. Also, the presence of severe hepatic (liver) or renal (kidney) impairment must be assessed as these conditions affect how the medicine is used and may contraindicate its use.

Q: What is the average time before patients see any noticeable change after starting Reglide?

A: While the immediate post-meal blood sugar lowering effect is rapid, a decrease in the overall, long-term marker of blood sugar control, Fasting Blood Glucose, is typically seen after approximately one month of treatment. This period allows time for the body to adjust and for measurable changes in control markers to appear.

Q: Is there a patient brochure or guide for Reglide from the manufacturer?

A: Yes, regulatory agencies require a Patient Information Leaflet (PIL) or a Patient Medication Information section to be made available for Reglide. This document contains a summary of the safety and administration instructions written specifically for patients.

Q: Is Reglide a generic medicine or is it only available as a brand name?

A: The active ingredient, repaglinide, is available as both a brand-name product (which may be named Reglide, for example) and as a generic medicine.

Q: Are there any restrictions on physical activity while using Reglide?

A: Official patient counseling emphasizes that physical activity, particularly exercise on an empty stomach, can increase the risk of low blood sugar (hypoglycemia). Official patient counseling states that any significant change in a patient's routine, such as physical activity, requires discussion with a doctor as the medication dose may need to be adjusted.

Q: Can Reglide affect a person's ability to drive or operate machinery?

A: Official safety information states that Reglide may cause side effects like dizziness or drowsiness because of the risk of low blood sugar (hypoglycemia). Official safety information advises that activities like driving or operating machinery should be avoided until the patient understands how the medicine affects them.

Q: Are the effects of Reglide permanent, or do they stop when the drug is stopped?

A: Official patient information explicitly states that the desired blood sugar control effect is not achieved if the medicine is stopped. The effects of the drug are dependent upon its continued use, meaning the therapeutic effects cease when treatment is discontinued.

Q: Are there any documented cases of Reglide causing liver problems?

A: Official regulatory labeling documents that 'Abnormal hepatic function' and 'increased liver enzymes' are listed as a very rare reported adverse reaction. Medical literature also contains rare case reports of liver injury associated with the active ingredient.

Q: What are the less common, but still reported, side effects of Reglide?

A: Official safety data lists reported reactions categorized as less frequent than 'Common.' These can include Abnormal hepatic function, increased liver enzymes, and acute coronary syndrome (though regulatory sources state its causal relationship remains uncertain).

Q: Why is Reglide sometimes prescribed instead of older medications?

A: Reglide's active ingredient has a unique pharmacological action that provides a rapid and short-lived insulin-releasing effect. This characteristic is officially described as being particularly beneficial for specifically targeting and controlling the sharp, short-term spikes in blood sugar that occur immediately after a meal.

Q: Is Reglide considered a high-alert medication?

A: The drug class to which Reglide belongs is often included on high-alert lists used by hospitals and healthcare systems. This classification, often used by healthcare systems, is based on the drug class's potential for severe harm, specifically severe hypoglycemia, if it is misused or administered incorrectly.

How should Reglide be stored and disposed of?

How to Store and Dispose of Reglide?

Official regulatory documentation requires Reglide tablets (Repaglinide) to be stored at Controlled Room Temperature, specifically between 20 C and 25 C (68 F and 77 F). The product must be protected from light and moisture and should be stored in the original, tightly closed container.

  • Prohibited Storage: Do not freeze the tablets, and keep them away from excess heat.
  • Child Safety: The medicine must be kept out of the sight and reach of children.
  • Disposal: Unused or expired Reglide should be discarded according to local requirements, which often involves a medicine take-back program. It must not be flushed down the toilet or disposed of in household wastewater.

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

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