Eglonil

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Eglonil

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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 Eglonil

Property Description
Active ingredient Sulpiride
Form Tablet, Hard capsule, Oral solution/suspension, Solution for injection
Pharmacological class Antipsychotic (Neuroleptic), Benzamide Derivative
General purpose Balancing central nervous system function and regulating digestive motility
Origin Synthetic

What Type of Medicine is Eglonil?

Eglonil is a synthetic, single-ingredient medicine whose active component is Sulpiride (INN). Chemically, it is classified as a Benzamide derivative, and functionally, it belongs to the class of antipsychotics or neuroleptics. This classification signifies that the drug is primarily designed to modulate chemical signals within the central and peripheral nervous systems, helping to stabilize mood, thought patterns, and specific physical functions. Sulpiride is a compound known for its selective dopamine receptor antagonism, a mechanism clinically recognized for its influence across both psychological well-being and visceral function.


What is Eglonil Made Of and What Forms Does it Take?

  1. Composition: The core composition of Eglonil relies entirely on the active compound Sulpiride, formulated as a non-combination product with appropriate inactive excipients for administration. Research confirms that Sulpiride's unique chemical profile allows it to act as a dopamine D2 and D3 receptor blocker.
  2. Forms: Eglonil is available in several high-level preparations to suit different needs, including the oral route as a tablet, hard capsule, or oral solution/suspension (drops), and the intramuscular route as a sterile solution for injection. The availability of the oral solution specifically positions Eglonil for flexible use where precise dosing or difficulty swallowing solid forms is a consideration.

What is the General Purpose of Eglonil?

  1. Mechanism Principle: The general purpose of Eglonil is rooted in its unique mechanism: the ability to selectively target and modulate dopamine receptors in two distinct locations. This dual-site dopaminergic modulation enables it to assist in restoring emotional and cognitive balance, while concurrently acting on the gut to help regulate movement and function within the digestive system.
  2. Therapeutic Scope: This confirms that the medicine has a broad utility in stabilizing chemical imbalances and promoting more typical gut function, covering applications across both neuropsychiatric and functional gastrointestinal domains.

Regulatory References

  1. MedlinePlus, National Institutes of Health

What side effects are possible with Eglonil?

Possible Side Effects and Safety Information

The safety profile of Eglonil, whose active ingredient is Sulpiride, is structured around effects primarily related to the nervous and endocrine systems, as categorized in regulatory documents. This section describes the officially documented adverse reactions by frequency and system.

Common and Uncommon Adverse Reactions

Side effects classified as Common (affecting up to 1 in 10 people) often relate to hormonal changes and the nervous system. These include hyperprolactinaemia (increased prolactin levels), sedation or drowsiness, dizziness, extrapyramidal symptoms (such as tremor or restlessness), and weight gain.

Uncommon reactions (affecting up to 1 in 100 people) include more severe movement disorders like dystonia, and specific effects such as convulsions and an increase in liver enzymes.

Serious Adverse Reactions and Safety Constraints

The official labeling documents rare but serious risks, including Neuroleptic Malignant Syndrome (NMS), which is characterized by fever and muscle rigidity. Cardiovascular risks classified as Rare involve ventricular arrhythmias, including Torsade de Pointes. Furthermore, the safety documentation includes the risk of venous thromboembolism (VTE), which encompasses deep vein thrombosis and pulmonary embolism.

Specific safety notes address particular populations and exposure patterns:

  • Older Adults: Increased risk of serious adverse events and mortality is noted, especially in those with dementia.
  • Pregnancy Exposure: Use in the third trimester may lead to extrapyramidal signs or withdrawal symptoms in the neonate.
  • Long-Term Exposure: The risk of Tardive Dyskinesia is associated with long-term use of this class of medication.

This information reflects the regulatory classification of risks, providing a framework for understanding the medicine’s safety characteristics without offering clinical advice or instructions.

Overdose and Emergency Response

Overdose and When to Seek Help

If an overdose of Eglonil (Sulpiride) is suspected or has occurred, seek immediate medical attention or go to a hospital casualty department straight away.


Documented Overdose Manifestations

Regulatory documents confirm that overdose can present with a range of symptoms, including central nervous system (CNS) effects such as agitation, confusion, and a reduced level of consciousness, potentially progressing to coma, which may be prolonged following very large doses.

The overdose profile also includes severe motor symptoms characteristic of Extrapyramidal Syndrome. These signs include trembling, muscle stiffness, involuntary movements, and severe, reversible dystonic crises (e.g., trismus or protrusion of the tongue). Hypotension (low blood pressure) and salivary hypersecretion may also occur.


Severe Complications and Management

A critical, documented complication is the risk of life-threatening cardiac events. Overdose has been associated with QT interval prolongation, ventricular arrhythmias, and the serious condition Torsade de pointes, which can lead to cardiac arrest.

Due to the severity of these risks, and because no specific antidote is known, treatment is symptomatic and requires the institution of appropriate supportive measures of vital functions. All patients must be placed under close cardiac monitoring for signs of severe arrhythmia. Extrapyramidal symptoms may be managed with anticholinergic agents as part of the supportive care protocol.

Therapeutic Uses of Eglonil

What Eglonil Helps Manage

The medication is applied across domains where additional symptomatic support is needed. It is commonly used to help manage symptoms that create noticeable interference with daily stability and functional strain.

Eglonil is considered relevant in conditions presenting with acute episodes, recurrent or episodic manifestations, and where functional stability becomes affected. It offers symptomatic support that may help support patients during difficult episodes. As a general patient-oriented benefit, “it assists with maintaining functional stability when symptoms are more noticeable.” This action helps ease the overall burden of symptoms, contributing to easing discomfort during challenging episodes, and is used across domains where short-term symptomatic assistance is appropriate.

Quick Fact: Support for Symptoms Related to Heightened Physiological Activity

Eligibility and Restrictions for Use

Official Eligibility Rules for Eglonil (Sulpiride)

The use of Eglonil is governed by strict population eligibility rules outlined in official regulatory documents. These rules classify individuals into groups for whom the medicine is strictly prohibited (Contraindicated), for whom it is Not Recommended, and for whom use requires Caution.

Classification Population or Condition Status
Absolute Contraindications Phaeochromocytoma; Prolactin-dependent tumours (e.g., breast cancer, prolactinomas); Acute Porphyria; Concomitant use with Levodopa or dopaminergic antiparkinsonian drugs; Hypersensitivity to sulpiride or excipients. Contraindicated
Age-Related Limits Children under 14 years of age. Not Recommended
Physiological States Pregnancy; Breastfeeding mothers. Not Recommended/Contraindicated
Conditional Use Patients with renal impairment; History of epilepsy; Cardiovascular risk factors (e.g., QT prolongation); Older adults (geriatric patients). Use with Caution

The regulatory basis for these rules dictates that use is limited to adults without contraindications. Renal impairment requires a mandatory dose reduction as per official guidelines. If used during the third trimester of pregnancy, neonates must be monitored for adverse reactions.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory information describes specific interaction patterns for Eglonil (Sulpiride), primarily categorized by pharmacodynamic risks and altered drug exposure. Co-administration is strictly contraindicated with certain drug classes due to the risk of severe outcomes.

Mandatory Restrictions and Contraindications

Interacting Substance/Class Regulatory Restriction Official Interaction Pattern
Levodopa and Antiparkinsonian Agents Co-administration is contraindicated. Antagonistic effects reduce Levodopa efficacy.
Alcohol and Alcohol-containing Medicines Consumption must be avoided. Pharmacodynamic reinforcement of CNS depression.
QT-Prolonging Agents (e.g., Quinidine, Disopyramide) Combination is contraindicated/strongly not recommended. Increased risk of severe cardiac arrhythmia.
Antacids or Sucralfate Mandatory timing separation: Sulpiride must be taken two hours before these products. Reduced systemic absorption of Sulpiride, lowering exposure.

Additional Documented Pharmacodynamic Effects

Co-administration with other CNS depressants (e.g., narcotics, benzodiazepines) results in enhanced sedation. Combining with Metoclopramide or Lithium is documented to increase the risk of extrapyramidal adverse reactions due to additive effects. Use with antihypertensive agents may result in enhanced postural hypotension.

Population-Specific Consideration

Due to the medicine's primary reliance on renal elimination, renal impairment is associated with an officially noted risk of accumulation (increased systemic exposure).

Mechanism of Action

Dopaminergic System Modulation

Eglonil exerts its action primarily by modulating the dopaminergic system through interaction with specific receptor subtypes. It acts as a selective antagonist at postsynaptic dopamine D2 and D3 receptors in the central nervous system. This interaction blocks the binding of the endogenous neurotransmitter, regulating downstream signaling sequences within key neural pathways and affecting the resulting D2-mediated output.

Dose-Dependent Pathway Engagement

The drug demonstrates a dual, concentration-dependent mechanism. At lower concentrations, Eglonil preferentially targets presynaptic D2 autoreceptors. Antagonism of these receptors removes an inhibitory brake on the neuron, thereby altering the feedback loop and increasing the net release of dopamine into the synapse. At higher concentrations, the dominant effect is the antagonism of postsynaptic receptors, which alters neuronal activity through different pathway engagement.

Peripheral Gastrointestinal Pathway Regulation

Outside the central nervous system, Eglonil acts on D2 receptors present in the gastrointestinal tract. Antagonism of these peripheral receptors regulates signaling patterns associated with gut motility control, leading to an increase in gastrointestinal transit and generating specific physiological changes in the digestive system.

Dosage and Administration Information

How Eglonil (Sulpiride) is Administered

The usage of Eglonil is structured around established administration methods and dose parameters. The medicine is approved for use via two primary routes: oral (as tablets, hard capsules, or solution) for ongoing management, and the intramuscular (IM) injection for use in acute or initial settings.


Dosing and Frequency Patterns

Standard adult regimens typically begin in the range of 400 mg to 800 mg daily. For most treatment plans utilizing doses of 400 mg or greater, the total daily amount is administered in a divided dose, generally taken twice daily (e.g., in the morning and early evening). The IM injection route has an official use limit of 400 mg per day and is typically intended for a short duration before a transition to oral treatment. The maximum suggested dose for certain indications is 2400 mg per day.


Procedural and Population-Specific Instructions

Oral forms should be swallowed whole with water. A critical instruction related to proper absorption is the requirement to take Eglonil two hours before antacids or sucralfate, as these may reduce its uptake. Official usage rules specify that the dose must be reduced for older adults or any patient with confirmed renal impairment, as the drug is mainly cleared by the kidneys. Furthermore, its use is not recommended in children under 14 years due to insufficient clinical experience to support specific dosing guidelines.

Recent Clinical Evidence

Eglonil (Sulpiride): Recent Clinical Evidence

The clinical investigation of Eglonil (sulpiride), a substituted benzamide, has spanned several decades and focuses primarily on its use in various psychiatric and certain gastrointestinal conditions. Research indicates that the compound may exhibit different effects depending on the studied dose range.

Schizophrenia and Psychotic Disorders

Studies examining sulpiride for schizophrenia suggest that its potential impact may vary based on symptom type. Some research has shown an effect on negative symptoms (such as social withdrawal or lack of motivation) at lower doses, while higher doses were often utilized in trials assessing positive symptoms (including delusions and hallucinations). In a review, limited-size trials comparing sulpiride to a placebo reported no clear difference in outcomes for mental state, and the overall evidence was noted as very limited and not robust enough for definitive conclusions on superiority.

Separately, in short-term trials involving individuals whose schizophrenia had been resistant to other medications, the use of sulpiride alongside clozapine appeared to be associated with clinical improvement in some participants, although this evidence was also acknowledged to be limited.

Other Investigated Uses

Beyond psychosis, clinical studies have explored sulpiride for other applications. An open, observational study characterizing the responder profile for somatoform disorders indicated a reduction in the incidence and perceived severity of somatic complaints among a majority of participants after a treatment period. Other research has investigated the use of sulpiride in the management of anxiety disorders and as an intervention for certain gastrointestinal disorders such as peptic ulcer disease and gastroesophageal reflux disease, though these uses may be driven more by clinical experience than by widespread, robust evidence from large-scale randomized trials.

Frequently Asked Questions (FAQ)

Common questions about Eglonil (FAQ)

Q: What are the main medical conditions Eglonil is approved to treat?

A: Eglonil (Sulpiride) is indicated in official product information for the treatment of acute and chronic schizophrenia. Depending on the country, regulatory documents also approve its use for the management of anxiety and major depressive disorder when used at low doses.

Q: Why is Eglonil sometimes prescribed for stomach and digestive issues?

A: Studies and official information show that Sulpiride acts on dopamine receptors found in the gastrointestinal tract in addition to the brain. This mechanism involves the modulation of gut signaling, and clinical use has been explored for conditions such as peptic ulcer disease or certain functional gastrointestinal disorders.

Q: How long does the effect of Eglonil usually last after a dose is taken?

A: According to pharmacokinetic data, the amount of Sulpiride in the body is generally reduced by half within 6 to 8 hours. This measurement, called the elimination half-life, is a factor used by prescribers to determine how often the medicine is typically administered.

Q: Are there known withdrawal effects or symptoms when stopping Eglonil treatment?

A: Regulatory documents include a caution against abruptly stopping Sulpiride treatment. Abrupt discontinuation may be associated with the return of prior symptoms and can lead to unwanted effects. These can include physical effects such as feeling or being sick, difficulty sleeping, sweating, restlessness, or involuntary movements.

Q: Is Eglonil the same drug as the brand names Dogmatil or Sulpor?

A: Eglonil is a brand name for the active ingredient Sulpiride. Sulpiride is sold under various brand names in different countries, and Dogmatil is one of those brand names known to contain the same active ingredient.

Q: Can Eglonil affect blood sugar levels or cause changes in cholesterol?

A: Official safety information notes that long-term use of medicines in this class has been associated with metabolic changes in some patients. These changes may include increased blood sugar levels and alterations in lipid imbalances (cholesterol).

Q: What are the common gastrointestinal side effects, such as nausea or constipation, reported with Eglonil?

A: Official product information lists constipation as a common gastrointestinal side effect. Other reported digestive issues may include nausea and vomiting.

Q: Is it necessary to have regular lab tests or monitoring while taking Eglonil?

A: For patients on long-term treatment, clinical practice described in product information often involves the regular monitoring of heart function (such as an ECG). Additionally, regular blood tests are advisable to monitor for potential metabolic changes like blood sugar and lipid levels.

Q: What information is available regarding the effect of Eglonil on sexual function or libido?

A: Adverse reactions listed in regulatory documents include changes to sexual function. Reported effects include abnormal orgasm and erectile dysfunction (impotence), which are typically classified as uncommon or rare side effects.

Q: How might Eglonil potentially affect a woman's regular menstrual cycle?

A: Official information states that Sulpiride commonly causes hyperprolactinaemia, which is an increase in the hormone prolactin. This hormonal change may be associated with menstrual disorders or amenorrhoea (the absence of menstrual periods).

Q: What signs or symptoms are typically described in cases of an Eglonil overdose?

A: Symptoms described in regulatory documents regarding overdose can include restlessness, agitation, and confusion. In more severe cases, effects can include extrapyramidal syndrome (movement disorders), low blood pressure (hypotension), and coma.

Q: Is there a known risk of Eglonil affecting a person's vision or causing blurred sight?

A: Yes, official adverse effect reports mention effects on the eyes. Adverse effects reported include blurred vision, as well as corneal and lens opacities.

Q: Is Eglonil sometimes described as a treatment for conditions like vertigo or dizziness?

A: Beyond the medicine's primary uses, Sulpiride has been noted in studies for its observed effect in individuals experiencing vertigo, which is a specific form of dizziness.

Q: What level of caution is described about daily activities requiring focus, like driving, while taking Eglonil?

A: The official product label states that patients should not drive or operate machinery if they experience certain symptoms. These symptoms include feeling sleepy, or having a slowing of reaction time or loss of concentration after taking the medicine.

Q: What are the guidelines for discontinuing or reducing the use of Eglonil?

A: Official product information states that a healthcare provider will gradually lower the dose until the medicine is stopped entirely. This process is used to prevent the return of symptoms or unwanted effects. Treatment reduction or cessation must be done under the supervision of a healthcare professional.

How should Eglonil be stored and disposed of?

How to Store and Dispose of Eglonil (Sulpiride)

Official regulatory labeling dictates strict conditions for storing and disposing of Eglonil tablets to maintain product quality and public safety.


Storage Requirements

Condition Requirement
Temperature Do not store the medicine above 25°C (77°F).
Protection Keep the tablets protected from excessive heat, light, and moisture.
Packaging Storage must be in the original container (blister pack or bottle).
Safety Eglonil must be kept out of the sight and reach of children.

Disposal Instructions

Unused or expired Eglonil must be disposed of in accordance with local regulations. To protect the environment, the medicine should not be disposed of via wastewater or flushed down the toilet. If a drug take-back program is unavailable, official guidance recommends mixing the tablets with an undesirable substance and sealing them before placing them in the household trash.

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

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