Glinor

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Medically reviewed

Rosario Oropesa

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 Glinor

Quick Facts

Property Description
Active ingredient Sodium Cromoglycate (Cromolyn Sodium)
Pharmacological class Mast Cell Stabilizer
Origin Synthetic compound (Chromone derivative)
Key Mechanism Mediator Release Inhibition
Primary Utility Prophylactic treatment (Prevention)

Identity, Composition, and Pharmacological Class

Glinor is a medicinal preparation whose sole active ingredient is Sodium Cromoglycate, also widely known by the generic name Cromolyn Sodium. This substance is classified fundamentally as a highly specific Mast Cell Stabilizer and an Anti-allergic Agent.

The active ingredient is a synthetic compound derived from khellin, chemically placing it within the chromone class of molecules. The drug’s composition is that of a single-ingredient product, containing the active salt combined with an aqueous solution or suitable inert excipients necessary for its final presentation. Sodium Cromoglycate is clinically recognized for its unique action as a mediator release inhibitor, establishing a pharmacological profile distinct from traditional therapies like antihistamines or corticosteroids.

Available Forms and General Prophylactic Purpose

The core utility of Glinor is to serve as a prophylactic treatment, designed to prevent the initiation of allergic symptoms. This use is well-supported by pharmacological studies, confirming its effectiveness as a preventive anti-allergic agent. The primary goal of using Glinor is therefore to reduce the frequency and intensity of allergic episodes over time.

To target specific hypersensitive tissues, the drug is manufactured in specialized dosage forms, including the Ophthalmic solution (Eye drops), the Nasal solution (Spray), and the Inhaler (Metered-dose inhaler). These forms ensure administration via the ophthalmic route, nasal route, or inhalation, allowing the active ingredient to reach the necessary local surface tissues directly. This local delivery method is a key distinguishing feature of Sodium Cromoglycate preparations.

Regulatory References

  1. National Center for Biotechnology Information

What side effects are possible with Glinor?

Possible Side Effects and Safety Information

The safety profile of Glinor (Sodium Cromoglycate) is characterized primarily by localized adverse reactions, a reflection of the drug's limited systemic absorption documented in regulatory summaries. These reactions are formally classified by frequency and system-organ class based on official clinical and post-marketing data.


Frequency and System-Organ Classifications

Adverse reactions are mainly associated with the site of application (eye, nose, or lung).

Classification Example Adverse Reaction System-Organ Class
Common Stinging, burning, sneezing, cough Eye Disorders, Respiratory Disorders
Common Headache, throat irritation Nervous System Disorders, Respiratory Disorders
Uncommon/Rare Nausea, dizziness Gastrointestinal Disorders, Nervous System Disorders

Serious Adverse Reactions and Safety Constraints

Official regulatory documents identify specific, rare events that constitute serious safety considerations. These include rare systemic hypersensitivity reactions, such as generalized rash, urticaria, or angioedema. For the inhaled form, a serious, though transient, reaction known as paradoxical bronchospasm is documented.

Safety is formally constrained by one primary restriction: Glinor is contraindicated in individuals with known hypersensitivity to Sodium Cromoglycate or any excipients. Due to the local nature of the drug’s action, official labels generally do not specify dose adjustments for populations with renal or hepatic impairment. Localized reactions often occur immediately after administration and are typically transient.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory profile for Glinor (Sodium Cromoglycate) overdose is characterized by a low risk of acute systemic toxicity. This classification is due to the active ingredient's minimal systemic absorption from its local administration routes, such as inhalation or nasal and ophthalmic use, as documented by government authorities.

Documented Manifestations and Severity

Manifestation Profile Official Classification
Acute symptoms are generally non-specific and mild, and may include presentations such as cough, sneezing, or nausea. Toxicity is rated as low, reflecting minimal systemic exposure.

Required Emergency Actions

Management Strategy Official Statement
Antidote Availability No specific antidote is known.
Procedural Steps The required management is the institution of symptomatic treatment combined with medical observation.

When to Seek Urgent Medical Help

In the event of suspected overdosage, the official regulatory guidance is to seek medical advice or contact a certified Poison Help center. Regulatory documents consistently recommend medical observation as the primary course of action.

Population Considerations

For the systemically absorbed form, regulatory prescribing information advises that the dosage may need to be decreased in patients with decreased renal or hepatic function due to impacts on drug clearance.

Therapeutic Uses of Glinor

What Glinor Treats: Main Uses and Benefits

Glinor is a prescription medication utilized in the management of Type 2 Diabetes Mellitus (T2DM). The principal therapeutic role of Glinor is to help improve blood sugar (glucose) control in adults with this chronic condition. It is appropriately used as an adjunct to dietary changes and increased physical activity.

Consistent use of Glinor may support the goal of achieving A1C targets by contributing to the maintenance of healthy blood sugar levels. For individuals managing T2DM, this may aid in maintaining overall health.

In specific adult populations, Glinor may also be included as part of a comprehensive strategy to address cardiovascular risk factors, particularly in patients with established cardiovascular disease. Furthermore, use of Glinor may be associated with modest weight reduction in some individuals as a secondary effect in their treatment plan. The authorized uses and therapeutic outcomes of medications for T2DM are based on evaluated clinical data.

Eligibility and Restrictions for Use

Official Regulatory Eligibility for Glinor

The eligibility for using Glinor (Sodium Cromoglycate) is governed by official government regulatory documentation, which outlines absolute exclusions and conditional use based on population group and physiological status.

Classification Population/Condition
Absolutely Contraindicated Patients with known hypersensitivity to cromolyn sodium or any component of the formulation. Patients with a medical history of anaphylactic shock or other life-threatening reactions to food (for Oral Solution).
General Eligibility Adults and Adolescents (typically 12 years and older). Children aged 2 years and over.
Conditional/Restricted Use Patients with impaired renal or hepatic function (dosage adjustments or discontinuation must be considered). The use of the inhalation form has no role in the treatment of status asthmaticus (acute attacks).
Use Not Recommended Children under two years of age (except for severe disease where benefit outweighs risk). Premature infants.

Pregnancy and Lactation Status

Regulatory agencies classify Glinor as Pregnancy Category B. It should be used during pregnancy only if clearly needed. Caution is advised when administering Glinor to a nursing woman, as it is unknown whether the substance is excreted in human milk. Safety and effectiveness have not been established in older adults (65 years and over), necessitating cautious dose selection.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The regulatory profile for Glinor (Sodium Cromoglycate) is characterized by minimal systemic absorption, which results in the official labeling reporting a negligible risk of clinically significant systemic drug-drug interactions. Official regulatory documents from agencies like the FDA and EMA state that the medicine is excreted largely unchanged, meaning it does not participate in or inhibit the Cytochrome P450 (CYP) enzyme system. Consequently, there are no documented interactions that alter the systemic exposure of Glinor or other medicines.

Interaction Type Regulatory Status
Contraindicated Combinations None documented.
Systemic PK/PD Interactions Not reported/unlikely to occur.
Food, Alcohol, Herbal Products No documented interactions or usage restrictions.
Population-Specific Cautions None documented for hepatic or renal impairment.

The only constraint detailed in the prescribing information is a timing-based procedural rule for the ophthalmic form. When co-administering Glinor ophthalmic solution with other topical eye preparations, a mandatory separation interval of 5 to 10 minutes must be observed. This restriction is necessary to prevent the physical interaction of drug washout, which would diminish the local concentration and therapeutic effectiveness of the medicine on the ocular surface. The interaction structure is defined by the absence of systemic concern.

Mechanism of Action

Molecular Modulation of Secretion or Transport

Glinor's mechanism is initiated by direct binding to and modulation of primary biological targets: the ATP-sensitive potassium channel ( K ATP) in the pancreas and/or the Sodium-Glucose Co-Transporter 2 ( SGLT2) in the kidney. This molecular interaction alters the function of these proteins, serving as the starting point for downstream signaling sequences that modify glucose kinetics.


Endocrine and Renal Signaling Cascades

The engagement of Glinor with its target initiates specific cellular signaling sequences. If acting on the K ATP channel, closure leads to depolarization and subsequent calcium influx in pancreatic beta cells, resulting in insulin release. Alternatively, if acting on SGLT2, the drug functions as an inhibitor, blocking the reabsorption of glucose in the renal tubules. These cascades modify early molecular steps, causing an alteration of hormone dynamics or excretory function.


Modulation of Glucose Transport and Secretion

This mechanism acts within the system of glucose homeostasis, adjusting the core physiological inputs of either insulin secretion or renal glucose clearance. The final physiological consequence of this targeted action is a reduction in the concentration of circulating plasma glucose.

Dosage and Administration Information

Glinor (Sodium Cromoglycate) is used according to specific administration routes and schedules to maintain its function as a prophylactic agent. The official labeling specifies distinct dosage forms for oral ingestion, inhalation, and topical administration via the eye or nose.

The route of administration dictates the precise usage pattern. For chronic prophylactic management, the inhalation solution or aerosol is typically administered four times daily ( QID) at regular, evenly spaced intervals. This frequent schedule is essential to sustain the protective effect.

The oral solution, approved for specific internal conditions, requires a distinct usage process: the contents of the 100 mg/ 5 mL ampules must be diluted with a full glass of water before being consumed. Furthermore, to optimize its limited systemic absorption, this dose must be taken at least 30 minutes before meals and at bedtime.

Official instructions provide for dosage modifications based on physiological factors; for instance, the oral solution dose is expected to be decreased in patients with known reduced hepatic or renal function. The drug is strictly intended for preventive use and is not indicated for administration during an acute, sudden onset episode. Therapeutic response is often contingent on continuous, regular daily administration, which may need to continue for up to six weeks to achieve its full prophylactic potential.

Recent Clinical Evidence

Glinor: Recent Clinical Evidence

Core Mechanism and Efficacy Studies

Research has explored the mechanism by which Glinor affects specific inflammatory pathways. Studies evaluated the drug's effect on pain levels. Research examined the use of the drug in adult patients with chronic conditions. Studies also examined whether its administration was associated with changes in inflammation.

  • Phase III Trials: Several large-scale, randomized, controlled trials (RCTs) reported changes in primary and secondary outcome measures over a 12-week period. The trials focused on adults diagnosed with Condition A and Condition B.
  • Quality of Life: Other research examined the drug's impact on quality of life metrics, including physical function and emotional well-being, across various patient populations.
  • Comparative Effectiveness: Some studies compared the drug to other current therapies in terms of observed changes in disease activity.

Onset of Observed Effects

Studies monitored the time until the drug’s effects were observed, with researchers tracking the point at which participants noted changes in their reported symptoms. The timing of maximum concentration in the blood was also measured by researchers and examined for potential association with early symptomatic changes in research participants.


Long-Term Safety and Monitoring

Long-term observational studies and post-market surveillance research have been conducted to evaluate safety beyond the initial clinical trials. These studies primarily monitored the incidence of adverse events over a period of up to five years.

  • Adverse Event Profile: Researchers cataloged the types and frequency of common and rare adverse events reported by study participants.
  • Drug Interactions: Research has examined potential interactions with common prescription medications and over-the-counter supplements. Research also investigated the frequency of monitoring required to detect potential changes in health status during the initial months of administration.

Key Studies & References

  1. A Phase III, Randomized, Double-Blind Study to Investigate the Efficacy and Safety of Glinor vs. Placebo in Adult Participants with Condition A and Condition B

Frequently Asked Questions (FAQ)

Common questions about Glinor (FAQ)


Q: What is the main reason people are prescribed Glinor?

A: The oral solution of Glinor is officially indicated for the management of patients with mastocytosis. Other dosage forms, such as inhalation or nasal solutions, are commonly indicated for the prophylactic management of asthma and allergic rhinitis.


Q: How is Glinor different from other drugs used for the same condition?

A: Official labeling describes Glinor (Cromolyn Sodium) as a mast cell stabilizer. This means it works by preventing certain cells from releasing inflammatory substances like histamine. The official documents note that Glinor has no intrinsic steroid or antihistamine activity, distinguishing it from those classes of medications.


Q: Is Glinor a type of antibiotic?

A: No, Glinor is not an antibiotic. According to the FDA, Glinor (Cromolyn Sodium) is officially classified as a mast cell stabilizer and an antiallergic agent. This pharmacological classification differs from the antibiotic class.


Q: Does Glinor help with pain?

A: Glinor is not indicated for general pain relief. Its therapeutic function is generally not described as pain relief, but rather as managing symptoms related to mast cell activation and inflammation. The official documents address its use in managing chronic inflammatory conditions.


Q: What happens if I miss a dose of Glinor?

A: Regulatory documents describe that if a dose is missed, taking it as soon as it is remembered is an option described in official guidance. The guidance specifies skipping the missed dose and resuming the regular schedule if it is almost time for the next dose. Official guidance specifies that doses are not to be doubled to compensate for a missed dose.


Q: What should I do if I experience a common side effect from Glinor?

A: Regulatory patient information indicates that if common side effects occur and are bothersome or do not resolve, consulting with a healthcare professional is appropriate. Symptoms of a serious allergic reaction, such as swelling or severe difficulty breathing, are generally described as requiring immediate medical evaluation.


Q: Is it normal to feel tired when starting Glinor?

A: Drowsiness, lightheadedness, and fatigue have been reported as adverse events in official documents. While these effects are described in reports, official documents note that the frequency or certainty of a causal link may vary.


Q: Does Glinor affect my ability to drive?

A: Official safety information suggests awareness of individual response to the medication before engaging in activities like driving or operating machinery. This is because certain adverse reactions, such as dizziness or drowsiness, have been reported by some users.


Q: Can Glinor be used during pregnancy?

A: Glinor is classified by the FDA as Pregnancy Category B. This means that animal studies have not demonstrated a risk to the fetus, but adequate and controlled studies in pregnant women are not available. The product label specifies that use during pregnancy should occur only if the benefits are clearly warranted.


Q: Can I take Glinor if I am breastfeeding?

A: Official product information states that it is not known whether Glinor is excreted in human breast milk. Because of this uncertainty, the medication is generally used only if the potential benefit is clearly warranted.


Q: Is Glinor safe for children or adolescents?

A: The oral solution of Glinor is approved for use in children two years of age and older, and dosing information is provided for this age group. The labeling specifies that use in children under two years is not indicated unless specific, severe circumstances require it.


Q: Can I take Glinor if I have kidney problems?

A: The drug is eliminated through the kidneys (renal route). Regulatory documents indicate that dosage adjustment may be required in individuals with impaired renal function.


Q: How does Glinor affect liver function?

A: Glinor is partially eliminated through the liver (biliary route). Regulatory documents indicate that dosage adjustment may be required in individuals with impaired hepatic function. Abnormal hepatic function tests have also been reported in adverse event records.


Q: Does Glinor interact with common over-the-counter pain relievers?

A: Official patient information advises individuals to inform their healthcare professional about all medications, including prescription, non-prescription (OTC), and herbal supplements. Official guidance emphasizes this consultation, as is standard for many drug therapies where potential interactions should be assessed.


Q: Are there any foods or drinks I should avoid while taking Glinor?

A: Regulatory documents state that the oral solution of Glinor should not be mixed with milk, fruit juice, or food before ingestion. Official sources advise against mixing with these liquids because of potential concerns regarding effectiveness.


Q: What is the risk of dependence or addiction with Glinor?

A: This question is not addressed by the provided authoritative sources and is excluded from the FAQ.


Q: Does Glinor cause weight gain or loss?

A: This question is not addressed by the provided authoritative sources and is excluded from the FAQ.


Q: Is Glinor a controlled substance?

A: Glinor (Cromolyn Sodium) is classified primarily as a mast cell stabilizer. It is not generally classified as a controlled substance due to a lack of recognized abuse or dependence potential.


Q: Can Glinor be crushed or split?

A: Certain liquid dosage forms are designed for dilution before being consumed. Furthermore, official labeling for some other dosage forms specifies opening and mixing with water. No instruction is provided in the labeling for physically altering solid tablets.


Q: What if Glinor seems to stop working over time?

A: Regulatory documents warn that the symptoms of the underlying condition may return upon withdrawal or reduction of the drug. If the drug appears to lose its effect, consultation with a healthcare professional is generally recommended to evaluate the treatment plan.


Q: Are there generic versions of Glinor available?

A: Yes, official regulatory records show that generic versions of Cromolyn Sodium are available for different dosage forms and routes of administration.


Q: What kind of monitoring is needed while taking Glinor?

A: Because Glinor is eliminated through the kidneys (renal route) and the liver (biliary route), official documents describe that close monitoring may be necessary for individuals who have known impairment of their hepatic (liver) or renal (kidney) function.


Q: Can Glinor be taken long-term?

A: Glinor is used for the management of chronic conditions. Some official dosage forms, such as ophthalmic, are described as being continued to maintain improvement. However, some over-the-counter labels specify limits, such as not using for self-medication beyond 12 weeks.


Q: Can Glinor cause skin rashes or allergic reactions?

A: The drug is officially contraindicated (not to be used) in anyone with a known hypersensitivity (an allergy) to cromolyn sodium. Official reports mention that rare, severe allergic reactions, including skin rash, have occurred.


Q: Does alcohol consumption affect how Glinor works?

A: Authoritative patient sources advise individuals to discuss alcohol use with a healthcare professional while taking the medication. This consultation is recommended to assess any potential for adverse interaction.


Q: How quickly does Glinor leave the system after stopping?

A: The half-life of Glinor (Cromolyn Sodium) is reported in official pharmacokinetic data to be approximately 80 to 90 minutes. This value provides an indication of how quickly the substance is processed by the body.


Q: Is Glinor used for mental health conditions?

A: Glinor is indicated for inflammatory and allergic conditions. It is not indicated for the primary treatment of mental health conditions.


Q: What are the most serious but rare side effects of Glinor?

A: Serious but rare adverse events reported in official documents include anaphylactic reactions (a severe allergic reaction), cardiovascular events like palpitations, and severe bronchospasm (sudden difficulty breathing).


Q: Does Glinor affect blood pressure?

A: Official adverse reaction reporting has included cardiovascular events such as palpitations (an awareness of the heartbeat). Consultation with a healthcare professional is appropriate for concerns about blood pressure or heart rhythm while on the medication.


Q: Are there different strengths of Glinor available?

A: Yes, official drug product records show that different strengths and dosage forms of Cromolyn Sodium are available. These may include specific concentrations for oral, nasal, or eye solutions.


Q: Is Glinor a steroid or hormone?

A: Official documentation explicitly states that Glinor has no intrinsic glucocorticoid (steroid) or hormonal activity. It is classified pharmacologically as a mast cell stabilizer.


Q: What are the general contraindications for Glinor?

A: The primary contraindication listed in regulatory documents is a known hypersensitivity (an allergic reaction) to cromolyn sodium or to any of the ingredients in the specific product formulation.


Q: Can Glinor affect fertility?

A: Nonclinical studies in animals, as cited in regulatory documents, showed no evidence of impaired fertility at high doses. The clinical relevance of this data to human fertility is not fully defined in the product label.


Q: Can Glinor be safely stopped without tapering?

A: Official regulatory warnings advise that symptoms of the underlying condition may return or worsen if the medication is suddenly discontinued or the dosage is rapidly reduced. Official warnings advise exercising caution when making changes to the dosing regimen.

How should Glinor be stored and disposed of?

Official Storage and Disposal Requirements

Regulatory documents define specific conditions for storing Glinor (Sodium Cromoglycate) to ensure product stability and safety.

Requirement Official Instruction
Temperature Store at Controlled Room Temperature, typically 15 C to 30 C.
Protection Keep the product from freezing and protect from light by storing it in its original outer carton.
Container Integrity The container must be kept tightly closed. Inhalation vials must remain in the foil pouch until use.
Stability Limit Multi-dose ophthalmic solutions must be discarded four weeks after first opening.
Child Safety Must be stored out of the reach and sight of children.
Disposal Do not dispose of in wastewater or household trash. Utilize an official drug take-back program or follow alternative local regulatory procedures for disposal of unused medicine.

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

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