Aleze

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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 Aleze

Quick Facts

Property Description
Active ingredient Loratadine
Form Tablet and Oral Suspension
Pharmacological class Second-Generation Antihistamine
Common use Systemic relief from allergic symptoms
Origin Synthetic Compound

What Type of Medicine is Aleze? (Identity and Classification)

Aleze is a medicinal product containing the active ingredient Loratadine. This synthetic compound is classified as a Second-Generation Antihistamine, a pharmacological group whose efficacy is widely recognized across clinical guidelines for allergy management. Loratadine functions as a highly selective inhibitor of peripheral H1-receptors, meaning it primarily targets receptors outside the central nervous system. This selective action is a key differentiating feature, clinically recognized for minimizing the sedative effects commonly associated with older antihistamine compounds.

Composition and Physical Form of Loratadine

The drug is supplied for Oral administration, offering both a solid Tablet and a liquid Oral Suspension. This dual-form availability is a distinguishing factor, supporting administration for a broad patient group, specifically catering to children over two years of age who often require the liquid dosage form. As a single-ingredient product, its composition includes Loratadine along with pharmaceutical excipients necessary for stable delivery and patient-friendly ingestion. Loratadine's established antiallergic efficacy validates its role as a foundation for relief.

General Purpose and Antiallergic Benefit

The core purpose of Aleze is to exert a systemic antiallergic effect through targeted physiological action. It works by blocking the effect of histamine, the natural chemical mediator released by the body during an allergic response. By acting as an antagonist, Loratadine interrupts the signal cascade, resulting in the relief of systemic allergic symptoms such as irritation and excessive fluid production. This mechanism provides sustained relief for discomfort stemming from the body's overreaction to allergens.

Regulatory References

  1. Loratadine: MedlinePlus Drug Information

What side effects are possible with Aleze?

Possible Side Effects and Safety Information

The information below summarizes the official safety characteristics and documented adverse reactions associated with Loratadine (the active ingredient in Aleze), as strictly categorized in government regulatory documents.

Adverse reactions are classified based on frequency observed in clinical trials and post-marketing surveillance:

Classification Examples of Documented Adverse Reactions (SOC)
Common Headache, Somnolence (Drowsiness), and Fatigue (Nervous System, General Disorders).
Uncommon Increased appetite and Insomnia (Metabolism, Psychiatric Disorders).

Reactions categorized as Very Rare are derived from post-marketing reports and affect multiple physiological systems. These include severe hypersensitivity reactions (e.g., Angioedema, Anaphylaxis) affecting the Immune System, as well as Tachycardia (rapid heartbeat) and Palpitation (Cardiac Disorders), and reports of Abnormal Hepatic Function (Hepatobiliary Disorders).

Population-Specific Safety Considerations

Official labeling defines specific considerations for certain groups:

  • Pediatric Population: For children aged 2 through 12 years, the most commonly reported reactions are Headache, Nervousness, and Fatigue.
  • Hepatic and Renal Impairment: Caution is noted for individuals with severe hepatic impairment, and patients with kidney disease may require individualized consideration regarding administration.
  • Lactation: Use is generally not recommended during breast-feeding, as the drug is excreted in human breast milk.

Safety Restrictions and Limitations

The medicine is contraindicated in patients with a known hypersensitivity to the active substance or its excipients. Additionally, regulatory documents specify that certain formulations containing phenylalanine must be noted for patients with Phenylketonuria (PKU). Due to rare reports of somnolence, official notes exist regarding the potential impact on the ability to drive or operate machinery.

Overdose and Emergency Response

Overdose and When to Seek Help

A suspected overdose involving Aleze (Loratadine) requires immediate emergency action. Seek medical help or contact a Poison Control Center right away if an overdose is known or suspected, as mandated by regulatory labeling. This requirement for urgent medical attention is due to the potential for specific clinical manifestations documented in official sources.

Documented Manifestations and Outcomes

Category Officially Documented Findings
Common Overdose Signs Somnolence (drowsiness), Headache, and Tachycardia (rapid heart rate).
Serious Outcomes Increased occurrence of anticholinergic symptoms and, rarely, convulsion or palpitation have been reported as potential complications.

Emergency Management and Monitoring

Regulatory documents confirm that no specific antidote is known for Loratadine overdose. Therefore, management is centered on general symptomatic and supportive measures for as long as clinically necessary. Specific procedural measures listed in official labeling may include the administration of activated charcoal as a slurry with water, or the consideration of gastric lavage. Furthermore, medical monitoring of the patient is to be continued following initial emergency treatment, as Loratadine is officially noted as not removed by haemodialysis. Overdose effects, particularly somnolence, may occur at a lower exposure threshold in individuals with severe hepatic impairment or in the elderly.

Therapeutic Uses of Aleze

What Aleze Treats: Main Uses and Benefits

This medication is generally used in situations involving certain distressing symptoms associated with allergies. It is applied across domains where additional symptomatic support is needed for symptoms related to physical discomfort.


Key Therapeutic Support

Aleze is commonly used to help manage Allergic Rhinitis (both seasonal and perennial) and Chronic Idiopathic Urticaria (hives). This means it plays a role in managing symptoms that interfere with daily comfort, such as sneezing, runny nose, and the discomfort of itchy, watery eyes, alongside addressing symptoms that become more disruptive, such as intense itching (pruritus) associated with skin manifestations. This symptomatic support may help patients cope more steadily with symptom fluctuations during periods of heightened symptoms.

“It is considered relevant that this medication provides supportive relief when symptoms interfere with routine activities.”

This medication is generally helpful in situations where multiple symptoms occur together and create noticeable functional strain. It is relevant for easing symptoms over an extended duration, contributing to improved day-to-day comfort and stability.


Quick Facts

Property Description
Main Indication Allergic Rhinitis, Chronic Urticaria
Symptoms Targeted Sneezing, Runny nose, Itching (Pruritus), Watery eyes
Primary Benefit Support for Symptomatic Comfort

Regulatory References

  1. NIH MedlinePlus Drug Information

Eligibility and Restrictions for Use

Aleze (Loratadine) eligibility rules are defined by official government drug labels, identifying populations who are approved for use, those who require conditional use, and those who are formally prohibited.

Contraindications and Prohibited Use

Population Status Regulatory Rule
Absolute Prohibition Patients with known hypersensitivity or allergic reaction to Loratadine or any of its ingredients.
Age Restriction Children under 2 years of age, as safety and efficacy have not been established in this group.
Metabolic Risk Patients with certain rare hereditary metabolic disorders (e.g., galactose intolerance), particularly when using the tablet formulation.

Conditional Use and Restrictions

Use is restricted and requires regulatory-mandated caution or dose modification in the following populations:

  • Severe Organ Impairment: Patients with severe liver impairment or severe renal insufficiency (GFR < 30 mL/min) should be given a lower initial dose or an extended dosing interval, as directed in labeling.
  • Pregnancy and Lactation: The use of Aleze is not recommended for women who are pregnant or breastfeeding; the label advises consultation with a health professional before use, as the drug is excreted into breast milk.
  • Allergy Testing: The medicine must be discontinued at least 48 hours before any scheduled allergy skin tests, as it can interfere with test results.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Pharmacokinetic Interactions

The interaction profile of Aleze (Loratadine) is defined by its clearance through the liver's enzyme systems, primarily CYP3A4 and, to a lesser extent, CYP2D6. Co-administration with substances that inhibit these enzymes is associated with a resulting pharmacokinetic interaction that causes substantially increased plasma concentrations of Loratadine.

Specific interacting medicines that were studied and documented in regulatory sources include Ketoconazole, Erythromycin, and Cimetidine. For example, Ketoconazole co-administration is documented to increase Loratadine plasma concentrations by over 300%.

Food and Substance Interactions

Substance Interaction Type Official Outcome
Food Intake Pharmacokinetic Increases systemic bioavailability (AUC) of Loratadine by approximately 40% to 48% and delays time to peak concentration.
Alcohol Pharmacodynamic Documented in studies to produce no potentiating effects on psychomotor performance.

Population-Specific Considerations

The systemic exposure (AUC and C max) to Loratadine and its active metabolite is documented to be significantly increased in populations with impaired clearance. This includes subjects with Chronic Renal Impairment (creatinine clearance leq 30 mL/min) and those with Chronic Alcoholic Liver Disease (Hepatic Impairment). Exposure is also noted to be significantly higher in Elderly Subjects aged 66 to 78 years.

Mechanism of Action

How Aleze Works: Mechanistic Action

Aleze functions as a highly selective peripheral H1-histamine receptor antagonist. Its pharmacodynamic action centers on binding to these receptors located primarily on the surface of endothelial cells, smooth muscle cells, and nerve endings. By competing with and blocking the binding site of endogenous histamine, the drug prevents H1-receptor activation and subsequent signaling cascades.

This specific receptor blockade modifies early molecular events that typically follow histamine release, including the activation of Gq protein signaling pathways. The primary physiological consequence is the inhibition of the histamine-driven increase in capillary permeability and localized vasodilation in the microvasculature. By sustaining a reduced level of H1-receptor occupancy, Aleze modulates the magnitude of physiological responses governed by peripheral histamine activity, restricting the initiation and propagation of the inflammatory mediator's downstream effects.

Dosage and Administration Information

The administration of Aleze (Loratadine) is defined by standard protocols, establishing a standard once-daily oral regimen with specific dose adjustments for certain populations. The medicine is supplied in various formulations, including tablets, chewable tablets, orally disintegrating tablets (ODT), and oral syrup.


Official Dosing and Administration Protocol

The standard adult and pediatric regimens are designed around a 24-hour frequency to sustain the antihistaminic effect.

Patient Group Standard Dosing Regimen Frequency and Timing
Adults and Children age 6 years and older 10 mg as a single dose. Once daily (qDay)
Children 2 to <6 years 5 mg as a single dose (typically using the syrup). Once daily (qDay)

Special Administration Conditions

Route and Timing: Aleze is to be taken orally and may be administered without regard to mealtime. The dose should be separated by a full 24-hour interval.

Formulation-Specific Intake:

  • Oral Suspension/Syrup doses must be measured accurately using the dedicated measuring device provided with the product, not a household spoon.
  • Orally Disintegrating Tablets (ODT) are to be placed directly on the tongue where they dissolve rapidly and can be swallowed with or without water.

Adjustments for Organ Impairment: Patients with severe hepatic impairment or significant renal impairment (Glomerular Filtration Rate <30 mL/min) are recommended to receive an initial dose of 10 mg every other day to allow for reduced drug clearance. No adjustment is required for older adults.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Loratadine (Aleze)

The information presented here is a summary of the official research evidence that exists for the medicine loratadine (Aleze). It focuses on the structure of the studies, the outcomes that were measured, and the overall patterns described in the scientific literature, according to regulatory and scientific sources. Research does not determine whether an individual will respond similarly; these findings describe group patterns, not personal outcomes.


Evidence for Use in Allergic Rhinitis (Seasonal and Perennial)

The official research base for loratadine was studied for use in conditions characterized by fluctuating or episodic manifestations such as seasonal and perennial allergies. This evidence comes from short-term, randomized controlled trials (RCTs), as well as intermediate-term studies. Research explored short-term symptom changes related to sneezing, runny nose, and itchy eyes by using Total Symptom Scores (TSS), a method used in research exploring how symptoms change over time. Studies also monitored patient-reported outcomes describing perceived discomfort related to how allergies affect daily functioning.

Findings describe patterns observed in the studies related to changes in the acute allergic symptom scores (TSS) over the short-term treatment periods across the included populations. Trial reports described patterns observed in the studies when compared to placebo for both nasal symptoms and ocular symptoms. Comparative evidence is lacking against every other available second-generation antihistamine across all specific functional measures.


Evidence for Use in Chronic Idiopathic Urticaria (Hives)

Research has explored the use of loratadine in conditions involving periods of heightened symptoms such as chronic idiopathic urticaria, or hives. These studies are primarily short-term RCTs where researchers monitored outcomes related to skin manifestations over defined time intervals. The primary outcomes related to physical discomfort that was studied for included the Urticaria Activity Score (UAS), particularly for the severity of itching (pruritus) and the number and size of visible wheals.

Studies report how symptoms evolved in the observed populations, and the data show patterns related to how symptoms evolved in the observed populations for both itching and wheal characteristics as measured by the UAS over the typical short study durations. There is limited information for long-term outcomes regarding how symptoms evolved during extended use for urticaria, as the follow-up durations were limited in most controlled trials.

Key Studies & References

  1. Loratadine - StatPearls (NCBI Bookshelf review used for consensus information on pediatric dosing and contraindications)

Frequently Asked Questions (FAQ)

Common questions about Aleze (FAQ)

Q: What is Aleze used for?

A: Aleze is a medication that belongs to the class of Selective Serotonin Reuptake Inhibitors ( SSRI). It has been approved by regulatory agencies for the management of Major Depressive Disorder ( MDD) in adults.

Q: How does Aleze affect the brain?

A: As an SSRI, Aleze works by inhibiting the reuptake of serotonin in the central nervous system. This action may lead to an increase in the concentration of serotonin in the synaptic cleft, which is thought to be involved in its therapeutic effects.

Q: Can Aleze be taken with other medications?

A: The use of Aleze alongside other medications should be discussed with a healthcare provider to assess potential drug-to-drug interactions. Concurrent use with Monoamine Oxidase Inhibitors ( MAOIs) is generally contraindicated due to the risk of serotonin syndrome. Alcohol consumption while taking Aleze is also not advised.

Q: How long does it typically take for Aleze to start working?

A: While some people may report initial changes within the first one to two weeks of starting treatment, the full effect of Aleze on symptoms of MDD may not become apparent for several weeks, often between 4 and 6 weeks of consistent use. Individual responses can vary.

Q: Are there common side effects associated with Aleze?

A: As with all medications, Aleze is associated with potential side effects. Commonly reported effects in clinical trials may include nausea, sleep disturbances ( insomnia or somnolence), headache, and sexual dysfunction. These side effects are often transient and may lessen as the body adjusts to the medication. It is important to report any concerning side effects to a healthcare professional.

How should Aleze be stored and disposed of?

Storage and Disposal Requirements for Aleze

Aleze must be stored under Controlled Room Temperature conditions, specifically between 20 C and 25 C (68 F to 77 F), with excursions permitted up to 30 C. It is mandatory to protect the medication from freezing, excessive heat, moisture, and light.

Handling and Protection

The product must be kept in its original container and maintained tightly closed. For child safety, Aleze must be stored out of the reach and sight of children and pets.

Disposal Instructions

Unused or expired Aleze should be disposed of primarily through an authorized drug take-back program. If a take-back option is unavailable, the medication should be mixed with an undesirable substance, sealed in a container, and placed in the household trash, following specific regulatory guidance for non-hazardous medicines.

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

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