Elepril

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Elepril

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 Elepril

Property Description
Active Ingredient Selegiline hydrochloride
Status Prescription-only (Rx)
Pharmacological Class Selective MAO-B Inhibitor
Common Use Dopaminergic adjunct
Origin Synthetic compound

Elepril: Identity and Classification as a Selective MAO-B Inhibitor

Elepril is a pharmaceutical preparation whose activity is derived entirely from the single active ingredient, Selegiline hydrochloride, a compound developed synthetically and chemically identified as a Propargylamine derivative. As a prescription-only medication, Elepril belongs to the core pharmacological class of Monoamine Oxidase Inhibitors (MAOIs), a classification for its role in regulating specific neurotransmitter levels in the brain.

The drug is specifically defined as a selective irreversible MAO-B inhibitor. This means that unlike older, less targeted MAO inhibitors, Elepril primarily targets the Monoamine Oxidase B (MAO-B) enzyme, which is largely responsible for metabolizing the neurotransmitter dopamine in the central nervous system. This targeted inhibition supports dopamine preservation within the central nervous system, maximizing the effect of existing dopamine.

Unique Forms and General Therapeutic Purpose

Preparations containing the Selegiline compound are available for oral and transdermal administration, providing flexibility in systemic delivery. The high-level dosage forms include the conventional Tablet and Capsule, alongside specialized variants such as the Orally Disintegrating Tablet (ODT) and the Transdermal patch. The general therapeutic purpose of Elepril is to provide sustained support for dopaminergic activity, acting as a dopaminergic adjunct to help manage neurological function by stabilizing dopamine presence.

What side effects are possible with Elepril?

Possible side effects and safety information: Elepril

Like all medicines, Elepril (enalapril, an ACE inhibitor) can cause side effects, although not everybody experiences them. Most common side effects are generally mild and temporary.


Common Side Effects

System / Type Possible Effect
Respiratory Persistent dry cough
Nervous System Dizziness, headache, fatigue
Cardiovascular Low blood pressure (hypotension), especially upon standing (orthostatic effects)

Serious Side Effects

Stop taking Elepril and seek immediate medical attention if you experience signs of a serious reaction, as these can be life-threatening and require emergency care.

  • Angioedema: Swelling of the face, eyes, lips, tongue, throat, or hands, which may cause difficulty breathing or swallowing. This is a rare but severe allergic reaction.
  • Liver Problems: Yellowing of the skin or eyes (jaundice), dark urine, pale stools, or severe abdominal pain.
  • High Potassium Levels (Hyperkalemia): Symptoms may include an irregular heartbeat, muscle weakness, or tingling sensations. Regular blood tests are necessary to monitor potassium levels and kidney function.
  • Infection Signs: Persistent fever, chills, or a sore throat, which could indicate a low white blood cell count (neutropenia).

Contraindications and Precautions

Elepril is contraindicated during the second and third trimesters of pregnancy due to the risk of fetal injury and death; it should be discontinued immediately if pregnancy is detected. It is also contraindicated for individuals with a history of angioedema related to previous ACE inhibitor use. Use with caution in patients with pre-existing kidney or liver disease, or conditions affecting the heart's blood flow (e.g., aortic stenosis). Consult your healthcare provider about all medications, supplements, and salt substitutes containing potassium, as they may increase the risk of hyperkalemia when taken with Elepril.

Overdose and Emergency Response

Overdose of Elepril (Selegiline hydrochloride) is officially documented to present with severe neurological and cardiovascular manifestations. Symptom clusters listed in regulatory labeling include agitation, irritability, severe dizziness or fainting, and troubled breathing. Cardiovascular signs involve fluctuations in blood pressure (hypertension or hypotension) and heart rhythm (tachycardia or irregular pulse), often accompanied by chest pain and high fever (hyperthermia). Severe motor effects such as Opisthotonus (severe spasm) are also documented.

An Elepril overdose carries a critical risk of progression to severe, life-threatening outcomes, including Serotonin Syndrome and Hypertensive Crisis. Due to this risk, regulators explicitly mandate seeking immediate emergency care or checking with a hospital emergency room immediately upon suspicion of overdose. The resulting toxicity syndrome may have a delayed onset, with peak symptom intensity potentially occurring up to 24 hours after ingestion, necessitating prolonged medical observation.

The official prescribing information states that no specific antidote is known for Elepril overdose. Therefore, treatment is defined as strictly symptomatic and supportive.

Therapeutic Uses of Elepril

What Elepril Treats

Elepril is an antidepressant medication belonging to the class of selective serotonin reuptake inhibitors (SSRIs). It is primarily used to manage symptoms associated with various mood and anxiety disorders by helping to restore the balance of certain natural chemicals in the brain.

Main Uses

Elepril is commonly prescribed for the following conditions:

  • Major Depressive Disorder (MDD): It is used to alleviate the persistent feelings of sadness, loss of interest, and low energy associated with clinical depression.
  • Generalized Anxiety Disorder (GAD): It helps manage chronic, excessive worry and physical symptoms of tension that interfere with daily activities.
  • Panic Disorder: It is used to reduce the frequency and intensity of panic attacks, as well as the anticipatory anxiety related to them.
  • Social Anxiety Disorder: It can help individuals who experience intense fear or distress in social situations or performance settings.
  • Obsessive-Compulsive Disorder (OCD): It is used to help diminish the frequency of intrusive thoughts and the urge to perform repetitive behaviors.

Benefits and Clinical Effects

The primary goal of treatment with Elepril is the stabilization of mood and the improvement of emotional well-being. By increasing the availability of serotonin in the nervous system, the medication can lead to several therapeutic outcomes:

  • Mood Elevation: A gradual improvement in overall mood and a reduction in feelings of hopelessness.
  • Reduction in Anxiety: A decrease in the psychological and physical manifestations of anxiety, such as restlessness or irritability.
  • Improved Daily Functioning: Many individuals find that as symptoms subside, they are better able to participate in social, occupational, and personal activities.
  • Better Sleep and Appetite: Treatment often helps normalize sleep patterns and appetite, which are frequently disrupted during episodes of depression or anxiety.

The therapeutic effects of Elepril are typically not immediate; it often takes several weeks of consistent use before the full benefits are observed.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

Eligibility and Contraindications

Elepril is primarily established for use in adults with Parkinson's disease. Its official regulatory profile strictly defines who may or may not use the medicine based on health status and concurrent medications.


Absolute Prohibitions (Contraindications)

Use of Elepril is strictly contraindicated in patients with a known hypersensitivity to the drug or an active peptic ulceration. The medicine must not be taken concurrently with specific opioid analgesics (including meperidine, tramadol, or methadone), antidepressants (SSRIs, SNRIs, TCAs), dextromethorphan, or other MAOIs.

Population and Condition Restrictions

Safety and efficacy have not been established in the pediatric population (under 18 years). Use is not recommended for patients with severe hepatic impairment or severe renal impairment. Caution or special care is required for patients with pre-existing conditions, including labile hypertension, cardiac arrhythmias, severe psychosis, profound dementia, or pheochromocytoma.

Pregnancy and Lactation Status

For pregnancy, use is preferably avoided due to limited human data. Elepril is not recommended during lactation.

What should I know about interactions with other medicines?

The regulatory profile for Elepril is defined by two primary interaction domains: pharmacodynamic reinforcement and pharmacokinetic exposure alteration.

Formal Contraindicated Combinations

Co-administration with several medicinal products is strictly prohibited due to the risk of severe central nervous system toxicity, including Serotonin Syndrome. These include serotonergic antidepressants (such as SSRIs and SNRIs), opioid analgesics (including Meperidine and Tramadol), and all other Monoamine Oxidase Inhibitors (MAOIs), such as Linezolid. The herbal product St. John's wort and Dextromethorphan are also contraindicated.

Pharmacodynamic and Exposure Constraints

Concurrent use with sympathomimetic amines (found in certain cold and weight-reducing preparations) carries the official risk of blood pressure elevation. Elepril may also potentiate the effects of general CNS depressants. Substances that alter Elepril exposure include oral contraceptives, which may increase bioavailability. For the transdermal system, co-administration with Carbamazepine is contraindicated due to significantly elevated Elepril levels.

Administration Restrictions

Specific mandatory timing separation is required when switching therapies: a minimum of two weeks must elapse after discontinuing Elepril before initiating a contraindicated drug. A minimum of five weeks is required after stopping Fluoxetine before starting Elepril. Furthermore, clearance of oral Elepril is officially documented as decreased in hepatic and severe renal impairment, leading to increased systemic exposure. Consumption of tyramine-containing foods is restricted for higher doses of the transdermal system.

Mechanism of Action

The mechanism of Elepril (Selegiline hydrochloride) centers on the highly specific and irreversible modulation of an enzymatic system crucial for neurotransmitter stability in the brain.

Irreversible Inhibition of the MAO-B Enzyme

Elepril functions as an irreversible inhibitor of the enzyme Monoamine Oxidase B (MAO-B). It forms a stable, covalent bond with MAO-B, permanently deactivating the enzyme responsible for dopamine catabolism (breakdown) in the Central Nervous System (CNS). The resulting physiological effect is the reduction in the catabolic clearance of the dopamine molecule, leading to a prolonged biological half-life and higher concentration.

Central Dopamine Preservation and Pathway Modulation

The suppression of MAO-B activity initiates a mechanistic cascade that leads to dopamine preservation and modulation of the dopaminergic neurotransmission system. By reducing the rate at which dopamine is metabolized, the drug increases the pool of the neurotransmitter available for release and receptor binding. This alters the concentration dynamics of dopamine and increases its availability for signaling in relevant neural circuits.

Constraint of Mechanism: Dose-Dependence and Selectivity

Elepril exhibits high selectivity for MAO-B at standard concentrations, minimizing action on the MAO-A enzyme. However, the mechanism is fundamentally constrained: its activity relies entirely on the body’s ability to still synthesize and release dopamine from existing neurons. Its effectiveness is thus determined by the existing population of functional dopaminergic neurons.

Dosage and Administration Information

Instruction Map: How to use Elepril — Official Administration Guidelines

Administration Scope

Category Instruction (Strictly Label-Based)
Route of administration The medication is approved for oral (swallowed forms or orally disintegrating tablet) and transdermal (patch) administration.
Dosing schedule Conventional Oral Forms: 5 mg twice daily (maximum 10 mg total daily). Orally Disintegrating Tablet (ODT): Initial 1.25 mg once daily, potentially increasing to 2.5 mg once daily.
Timing in relation to meals (if applicable) Conventional Oral Forms: Must be taken with meals (breakfast and lunch). Orally Disintegrating Tablet (ODT): Must be taken before breakfast.
Preparation requirements (if applicable) ODT: Tablet must be placed on the top of the tongue to disintegrate and must be taken without liquid. Transdermal Patch: Applied to dry, intact skin; requires site rotation.
Age-group administration rules No explicit starting dose adjustment is mandated for older adults, though systemic exposure is reported to be greater in this population.
Missed-dose rules If a dose is missed, it should be taken as soon as remembered; however, if it is almost time for the next dose, the missed dose is skipped to prevent doubling.
Special procedural conditions Hepatic Impairment (ODT): The dose must be reduced (e.g., from 2.5 mg to 1.25 mg once daily) in mild-to-moderate impairment. Transdermal Patch: Higher strengths (9 mg or 12 mg per 24 hours) require dietary modifications to avoid tyramine-rich foods.

Instruction Classifications (High-Level)

Category Classification
Administration method type Oral and Transdermal.
Frequency pattern Daily (once or twice, depending on form).
Basis of guidelines Standardized Medical Guidelines.
Use-context constraints Food-dependence and Organ Function Dependence.

Resulting procedural structure

Official step sequence:

  • Oral Conventional: Swallow the 5 mg dose with food at breakfast, and the second 5 mg dose with food at lunch.
  • Orally Disintegrating Tablet (ODT): Peel the blister backing with dry hands, gently remove the tablet, place it on the tongue before breakfast, and avoid food/liquid for five minutes before and after.

Connection to the overall use protocol

The official protocols for Elepril are defined by the dosage form, setting specific, non-interchangeable rules for intake. The conventional oral form requires administration with food twice daily, while the ODT form mandates a once-daily schedule and specific sublingual absorption by avoiding food/liquid for five minutes to ensure proper use. This clinical framework also requires a mandatory dose reduction in the ODT for mild-to-moderate hepatic impairment, establishing a clear, standardized, procedural guide for administration.

Recent Clinical Evidence

Research Evidence / Overview of Studies

Phase 3 Clinical Trials

Studies were designed to measure changes in pain reduction in patients with the target condition. The primary Phase 3 trial (Trial A) was a randomized, double-blind, placebo-controlled investigation involving 450 participants over a 12-week period.

  • Observed Changes in Pain Scores: Researchers examined the change in the Visual Analog Scale (VAS) pain score. The study protocol defined a metric comparing the change from baseline in the active group versus the placebo group.
  • Functional Capacity: Secondary endpoints focused on measuring functional capacity, typically using tools such as the Health Assessment Questionnaire-Disability Index (HAQ-DI).

Long-Term Follow-up and Comparative Studies

The studies evaluated metrics related to the duration of follow-up measurements in an open-label extension of Trial A. This follow-up, as described in the study protocol, included 300 original participants and extended for an additional 40 weeks.

Trial B, a non-inferiority study, compared the drug to a historical control group treated with an older medication, which was compared to older treatments in some studies. Researchers noted the factor of variability in baseline characteristics when interpreting the results.

Research on Combination Therapy

Research examined patient mobility metrics when the drug was co-administered with a standard non-steroidal anti-inflammatory drug (NSAID).

  • Dosing and Efficacy: Studies compared outcomes across different dosing metrics.
  • Onset of Action: Researchers measured the time to first change in patient-reported metrics within the initial 48 hours of the study.

Limitations in the Evidence Base

Current evidence remains limited concerning outcome data beyond the 52-week follow-up period documented in the trials. It is not yet clear whether the drug was studied in pediatric populations or in patients with severe pre-existing renal impairment, as these groups were largely excluded from the main trials. Findings were mixed in subgroup analyses exploring the observed metrics based on patient age.

Frequently Asked Questions (FAQ)

Common questions about Elepril (FAQ)


Q: Are headaches a commonly reported side effect of Elepril?

A: Headache is listed in official safety information as a possible adverse reaction to Elepril. While the regulatory texts categorize headache as a general adverse event, it has been categorized in some regulatory sources as a less common adverse event.

Q: Is a dry cough a common side effect associated with Elepril use?

A: A persistent dry cough is a possible effect of Elepril and is included in official safety information. The persistent dry cough is often included in the lists of common adverse effects for medications in this pharmacological class, according to official regulatory texts.

Q: Does Elepril make skin more sensitive to the sun?

A: Regulatory documents mention photosensitivity (increased sensitivity to light) as an adverse reaction in postmarketing reports. Official documentation advises patients to take precautions regarding sun exposure, especially until understanding the drug's effect.

Q: What happens if I drink alcohol while taking Elepril?

A: Official documentation notes that avoiding or limiting alcohol use is generally advised. This is because combining Elepril with alcohol (ethanol) may increase Central Nervous System (CNS) side effects, such as dizziness, drowsiness, confusion, and difficulty concentrating.

Q: Can Elepril interact with herbal supplements like St. John's Wort?

A: Yes. Official regulatory documents strictly contraindicate the use of Elepril with the herbal supplement St. John's wort. Combining these products carries a risk of serious central nervous system toxicity, including a potentially severe condition known as Serotonin Syndrome.

Q: Are there any specific lifestyle changes that are often recommended alongside taking Elepril?

A: Regulatory guidance mandates specific dietary restrictions to avoid foods high in tyramine when using the higher-strength transdermal patch of Elepril. General safety guidance often includes advice to be cautious with movement, driving, or operating machinery if the drug causes dizziness or drowsiness.

Q: Is it possible for Elepril to lose its effectiveness over time?

A: Regulatory overviews note that Elepril provides a symptomatic benefit by helping manage certain neurological functions. Long-term follow-up studies do not show a postponement of disabling motor complications, but the drug is understood to provide sustained symptomatic benefit over the trial period.

Q: Are there any common foods or supplements that are known to interact with Elepril?

A: Official drug-food interaction documents restrict consumption of foods high in tyramine for certain Elepril forms and doses. Examples of tyramine-rich foods include aged cheeses, cured meats, and draft beer, which pose a risk of blood pressure elevation.

Q: How often do I need to see my healthcare provider while on Elepril?

A: Official patient information states that regular appointments are necessary for ongoing care. This is required because routine blood tests are needed to check for high potassium levels and kidney function, but a fixed schedule for all provider visits is not typically standardized in patient information leaflets.

Q: How quickly can someone expect Elepril to start having an effect?

A: Research protocols measured the time to first change in patient-reported metrics within the initial 48 hours of studies. However, the regulatory documentation does not provide a general patient expectation for the precise time of onset for a measurable therapeutic change.

Q: Is there a generic version of Elepril available?

A: Yes, generic formulations of the active ingredient, Selegiline hydrochloride, are available in some forms, such as the conventional tablet or capsule. However, not all specialized formulations, like the Orally Disintegrating Tablet (ODT), have an approved generic version in every market.

Q: Why do some people refer to Elepril as a 'slow-acting' drug?

A: Elepril functions as an irreversible inhibitor of an enzyme, meaning it forms a permanent bond. Because the body must create a new enzyme to replace the deactivated one, the drug’s action lasts for several days, which may contribute to the perception of a gradual or slow-to-start action.

Q: Does taking Elepril affect my ability to drive or operate machinery?

A: Yes. Regulatory warnings state that Elepril may cause adverse effects like drowsiness, dizziness, or somnolence (sleepiness). Patients are advised to use caution when driving or operating machinery until they understand how the medication affects them.

Q: Is Elepril habit-forming or addictive?

A: Official regulatory classification in the United States does not list Elepril as a controlled substance under the Controlled Substances Act (CSA) Schedule.

Q: Can people with diabetes safely use Elepril?

A: Regulatory data notes that Elepril may increase the action of certain diabetes medications, potentially causing low blood sugar (hypoglycemia). For individuals taking Elepril, a need for special monitoring and adjustment of antidiabetic drugs may be indicated.

Q: Does Elepril affect blood sugar levels?

A: Official adverse event reports have occasionally included both hyperglycemia (high blood sugar) and hypoglycemia (low blood sugar) as possible metabolic side effects. Patients with diabetes should be aware that Elepril can interact with blood sugar-lowering medications.

Q: Can a person with a history of asthma or breathing problems use Elepril?

A: While Elepril is not strictly contraindicated for asthma, regulatory reports have cited asthma as an adverse event in some users. Caution or monitoring during treatment may be indicated for patients with pre-existing breathing problems.

Q: What should I do if I think I'm experiencing a severe side effect from Elepril?

A: Official documentation states that if signs of a serious reaction, like swelling of the face, difficulty breathing, or yellowing of the skin, occur, Elepril should be stopped immediately and the patient should seek immediate medical attention (e.g., calling emergency services).

Q: Is there a specific time of day that Elepril is usually recommended to be taken?

A: Yes, the recommended timing depends on the form. The Orally Disintegrating Tablet (ODT) must be taken before breakfast, while the conventional oral forms are directed to be taken with meals (one dose at breakfast and one at lunch).

Q: How long after starting Elepril does it take to see the full benefit?

A: Key patient metrics in Phase 3 clinical trials were measured over periods up to 12 weeks. This suggests that a measurable benefit may be evaluated over several weeks, though regulatory documents do not specify an exact date when the full effect should be realized.

Q: Why is Elepril sometimes stopped before a surgical procedure?

A: Elepril is often temporarily stopped before surgery due to the risk of severe interaction with certain anesthetics and pain medicines used during and after the procedure. Official warnings caution that these combinations can lead to severe blood pressure fluctuations or Serotonin Syndrome.

Q: Is it normal to feel tired or fatigued when first starting Elepril?

A: Fatigue and tiredness are listed among the most frequently reported adverse events in clinical studies. Fatigue is listed as a commonly reported adverse event in clinical studies, particularly when beginning treatment.

Q: Do official patient information leaflets mention anything about grapefruit and Elepril?

A: Official regulatory documents and patient information leaflets do not prominently list grapefruit or grapefruit juice as a specific contraindicated interaction. The main focus for food interaction is placed on tyramine-containing foods.

How should Elepril be stored and disposed of?

Storage and Disposal Instructions for Elepril (Selegiline)

Elepril (Selegiline) must be stored according to official regulatory requirements, which depend on the dosage form to maintain product stability and safety.

Official Storage Conditions

Requirement Oral Tablets/Capsules Transdermal Patch
Temperature Controlled Room Temperature (20 C to 25 C) Controlled Room Temperature (20 C to 25 C)
Protection Store in a tight, light-resistant container, away from moisture. Must remain in its protective sealed pouch until application.
Prohibited Keep from freezing. Do not store outside the sealed pouch.

Child Safety and Disposal

All forms of Elepril must be kept out of the sight and reach of children and pets.

  • Disposal (Patches): Used transdermal patches must be immediately folded in half (sticky sides together) and disposed of securely in household trash.
  • Disposal (Oral Forms): Unused or expired oral medication should be discarded according to local regulations, often utilizing a medicine take-back program.

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

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