Analor

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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 Analor

Property Description
Active Ingredient Loratadine
Form Oral tablet, Syrup, Capsule
Pharmacological Class Second-Generation Antihistamine
Common Use Relief of general allergy symptoms (e.g., hay fever)
Origin Synthetic organic compound

Analor: Definition and Pharmacological Class

Analor is a medication whose primary component is the active ingredient loratadine (INN), utilized for the management of common allergy symptoms. Loratadine is formally classified as a second-generation antihistamine, a category clinically recognized for its long-acting profile and improved selectivity. This classification is a key differentiating factor, confirming the medicine’s modern pharmacological design.

The compound is a synthetic organic compound derived from the tricyclic piperidine structure. Loratadine is a single active ingredient product designed for oral administration, making it a straightforward anti-allergic agent for a broad patient group, including adults and children over the age of two.


Loratadine's Selective Action and Purpose

The fundamental action of loratadine involves acting as a selective inverse agonist of the peripheral histamine H1-receptor. This mechanism works by blocking the activity of histamine, the natural substance released during an allergic response that causes classic symptoms like sneezing, itching, and a runny nose. This confirms the medicine effectively reduces the discomfort associated with exposure to environmental allergens.

A key pharmacological advantage of loratadine's status is its minimal penetration across the blood-brain barrier. This chemical selectivity provides the therapeutic benefit of being generally non-sedating, allowing the compound to deliver effective, long-lasting anti-allergic properties without the significant risk of drowsiness common to older antihistamines.


Available Forms and Composition

Analor is available in various dosage form(s) suitable for oral administration, ensuring accessibility across patient populations. These preparations typically include the standard oral tablet, an oral syrup or solution form (often preferred for children), the liquid-filled capsule, and the orally-disintegrating tablet.

In terms of composition, the active ingredient loratadine is consistently present across all presentations. It is combined with an appropriate base/vehicle (such as solid oral vehicles for tablets or an aqueous solution base for liquid formulations) to ensure chemical stability and effective pharmaceutical delivery.

Regulatory References

  1. Loratadine - StatPearls - NCBI Bookshelf
  2. Loratadine: MedlinePlus Drug Information
  3. H1 Antihistamines: Current Status and Future Directions - PMC

What side effects are possible with Analor?

Official Adverse Reactions and Safety Profile of Analor (Loratadine)

The safety profile of loratadine, the active ingredient in Analor, is formally documented by regulatory authorities based on clinical trials and post-marketing surveillance. Adverse reactions are classified according to their observed frequency and impact on physiological systems.

Documented Frequency Classifications

Adverse reactions that are frequently reported, affecting up to 1 in 10 adult patients, are classified as common. These primarily affect the Nervous System and include headache and somnolence (drowsiness or fatigue). Uncommon effects, such as increased appetite, dry mouth, and nausea, are also documented.

Reactions documented with a very rare frequency, or identified through post-marketing experience (affecting fewer than 1 in 10,000 patients), involve more complex physiological systems. These include reports of abnormal liver function, convulsions/seizures, and severe hypersensitivity reactions such as anaphylaxis.

System-Organ Classes and Serious Reactions

The officially listed effects are categorized by System-Organ Class (SOC), including the Nervous System (dizziness, fatigue), Gastrointestinal Disorders (gastritis, nausea), Cardiac Disorders (palpitations, tachycardia), and Immune System Disorders (hypersensitivity).

Serious reactions listed in regulatory documents include anaphylaxis and severe angioedema, which represent rare but clinically important findings from surveillance data.

Safety Considerations in Specific Populations

Official labeling includes safety considerations for certain patient groups. Caution is noted for use in patients with severe hepatic impairment and those with renal impairment due to potential alterations in drug clearance. Furthermore, because loratadine is known to be excreted in breast milk, use is not recommended in breastfeeding women. Administration should also be discontinued at least 48 hours before skin allergy tests, as antihistamines can interfere with the results.

Overdose and Emergency Response

Overdose and When to Seek Help

Documented Overdose Manifestations

Overdosage of Analor (loratadine) is formally documented to present with specific clinical signs. These reported manifestations include central nervous system effects such as somnolence (drowsiness) and headache. Crucially, cardiovascular manifestations like tachycardia (rapid heartbeat) have also been reported. Overdosage is further associated with an increased occurrence of anticholinergic symptoms. In the pediatric population, the magnitude of these documented effects may be higher.

Mandated Emergency Action

If an overdose is suspected, immediate medical attention is required. Government labeling explicitly instructs individuals to get medical help or contact a Poison Control Center right away. If the affected person has collapsed, had a seizure, or cannot be awakened, emergency services must be called immediately.

Management and Clearance

Medical monitoring of the patient must be continued after initial emergency treatment. The regulatory approach to overdosage is based on general symptomatic and supportive measures, which may involve the administration of activated charcoal or gastric lavage. It is formally stated that loratadine is not removed by haemodialysis, and no specific antidote is officially documented.

Therapeutic Uses of Analor

What Analor Treats: Main Uses and Benefits

Analor (Loratadine) is commonly used to help with symptomatic relief across conditions characterized by periods of heightened symptoms, specifically allergic rhinitis (including seasonal hay fever and perennial forms) and Chronic Idiopathic Urticaria (persistent hives). The therapeutic context is associated with public health guidance regarding the management of these conditions.

It is applied in addressing the cluster of symptoms known as the nasal allergic syndrome, offering supportive relief from symptoms that interfere with daily comfort, such as sneezing, profuse runny nose (rhinorrhea), and accompanying itchiness. For skin conditions, it is used for managing symptoms by assisting with easing the intensity of skin itching (pruritus) and addressing associated skin symptoms.

“It is relevant in contexts where symptomatic assistance is appropriate without interfering with functional stability.”

The long-acting nature supports individuals who need to maintain alertness. This contributes to easing the overall symptom load and supports maintaining a sense of stability when symptoms are more noticeable, relevant across both respiratory and dermatological domains.

Contextual Note: Management of Allergic Pruritus
Analor is commonly used to help address symptom clusters that may become intense or disruptive, specifically skin itching (pruritus) and other symptoms related to inflammatory or irritative states associated with chronic allergic hives.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

The eligibility for Analor is strictly defined by regulatory documents, distinguishing between populations where use is allowed, restricted, or prohibited.

Populations Who Must Not Use Analor (Contraindications)

Classification Eligibility Rule
Absolute Prohibition Patients with known hypersensitivity to Analor or its excipients.
Physiological Status Pregnant females (if the drug is documented as carrying a high risk of fetal harm or teratogenicity).

Populations Requiring Restricted Use or Caution

Official labeling mandates that use in certain populations is conditional or not established:

  • Organ Impairment: Patients with severe hepatic impairment (e.g., Child-Pugh Class B or C) are often not recommended to use the medicine. Individuals with renal impairment may require use to be restricted or conditional due to altered drug clearance.
  • Age Groups: The safety and effectiveness of Analor are generally not established in the pediatric population below a specified age (e.g., under 18), often limiting approved use to adults. Use in older adults (geriatric) may require special caution.
  • Lactation: Use during breastfeeding is typically not recommended if the drug is known to be excreted into human milk with documented risk to the infant.

These constraints define the official eligible population, ensuring the medicine is used only where regulatory bodies have established safety and efficacy profiles.

What should I know about interactions with other medicines?

Analor (which may contain acetaminophen) has the potential to interact with several classes of medications, which can lead to altered drug effectiveness or increased risk of side effects. It is essential to inform your healthcare provider of all prescription, over-the-counter (OTC) medicines, and herbal products you are currently taking.

Potential Drug-Drug Interactions

Interacting Medicine Class Potential Effect Clinical Significance
Anticoagulants (e.g., Warfarin) May increase the risk of bleeding by enhancing the effect of the anticoagulant. Major - Increased monitoring of blood clotting (INR) is required; dose adjustment may be necessary.
Hepatotoxic Drugs (e.g., Isoniazid, Phenytoin, Carbamazepine, Rifampin) May increase the risk of liver damage, especially when Analor contains acetaminophen. Moderate to Major - Close monitoring or alternative pain relief may be recommended.
Other Acetaminophen-containing Products Increases the risk of acetaminophen overdose and severe liver injury. Major - Strictly avoid using Analor with any other product containing acetaminophen.

Other Interactions

  • Alcohol: Consumption of alcohol, particularly in chronic or excessive amounts, while taking Analor can significantly increase the risk of severe liver damage and should be limited or avoided.
  • Certain Foods/Supplements: Some medications, such as Cholestyramine, may decrease the absorption of Analor and reduce its effectiveness if taken concurrently. Consult a healthcare professional to ensure proper timing of doses.

Mechanism of Action

Selective H1 Inverse Agonism

The mechanism of action centers on the molecule acting as a highly selective inverse agonist at the peripheral Histamine H1-receptor. This interaction stabilizes the receptor in its inactive state, functionally suppressing the signaling cascade normally initiated by the body's natural mediator, histamine. This targeted approach modulates key pathways associated with histamine release.

Modulating Vascular and Sensory Pathways

By blocking the activation of the H1-receptor, the mechanism modifies early molecular steps that shape systemic physiological outcomes, particularly in blood vessels and nerve endings. This peripheral pathway modulation supports a regulated state by preventing histamine from increasing microvascular permeability and stimulating sensory neurons. This leads to physiological adjustments that functionally limit microvascular leakage and suppress the stimulation of afferent nerve fibers.

Blood-Brain Barrier Exclusion and Specificity

The molecule's chemical properties ensure it has minimal penetration across the Blood-Brain Barrier (BBB). This exclusion principle means the mechanism is almost exclusively applied to the peripheral H1-receptors. The mechanism is applied to distinct peripheral signaling patterns without significantly engaging the H1-receptors found within the Central Nervous System.

Dosage and Administration Information

How Analor is Used: Official Administration Guidelines

Analor, which contains the active ingredient loratadine, is used strictly via oral administration across all approved formulations. The medicine is classified for once-daily (qDay) dosing, consistent with its long-acting pharmacological profile. This standardized schedule is designed to simplify adherence.

Standard Dosing and Frequency

Population Group Standard Oral Dose Frequency
Adults and Children ge 6 years 10 mg Once daily
Children 2 to 5 years 5 mg Once daily

The maximum recommended dose for standard adult use is 10 mg per 24 hours. The medication can be taken without regard to meals, allowing flexibility in the daily schedule.

Population Adjustments and Special Instructions

Specific dose modifications are required for individuals with impaired physiological function. For adult patients and children weighing 30 kg or more who have severe hepatic (liver) impairment, the standard 10 mg dose is officially advised to be taken every other day. This adjustment accounts for the altered metabolism in these patients. Similarly, patients with severe renal impairment (creatinine clearance < 30 mL/min) are also advised to follow the 10 mg every other day schedule.

For administration of the oral solution, the dose must be measured accurately using a designated device, such as the cup or spoon provided with the product. A key procedural restriction is the requirement to discontinue loratadine administration for approximately 48 hours before a patient undergoes any allergy skin testing, as the presence of the drug can interfere with the diagnostic results.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Analor (Loratadine)


Evidence for Use in Allergic Rhinitis (Hay Fever)

The evidence base for Analor was studied for the symptoms associated with allergic rhinitis, commonly known as hay fever. This research primarily involves short-term Randomized Controlled Trials (RCTs), which were used in research exploring how symptoms change over time. The studies monitored specific measurements of nasal and eye-related symptoms like sneezing, a runny nose, and itching. Research also examined patient-reported outcomes describing perceived discomfort and monitoring changes in daily functioning or activity level (such as quality of life) over the study interval in adults and children as young as age two.

Findings describe patterns observed in the studies where measurements related to core allergy symptoms were reported over the defined time intervals of the research. In studies focusing on episodes where symptoms become more noticeable, studies monitored whether patterns related to symptomatic change occurred when compared against a placebo.

What remains uncertain is the measurable effect on nasal congestion. Data show measurements related to other nasal symptoms, but the evidence is limited and findings were mixed regarding measurable change in congestion when Analor was observed in some studies as a single-agent treatment.


Evidence for Use in Chronic Idiopathic Urticaria (Hives)

Analor was studied for its relevance in conditions involving periods of heightened symptoms, such as Chronic Idiopathic Urticaria (CIU), or persistent hives. The core research consists of short-term RCTs that evaluated outcomes related to physical discomfort and outcomes linked to inflammatory or irritative states. Studies monitored changes in key outcomes capturing phases of heightened symptom activity, particularly the intensity of skin itching (pruritus) and the formation of visible welts or wheals.

Studies report how symptoms evolved over short observation periods, typically between four to six weeks. Data show patterns related to both the severity of itching and the physical appearance of the hives that were observed in the studies. Patient-reported outcomes describing perceived discomfort were also used in these studies, contributing to the broader evidence landscape related to symptomatic patterns associated with acute or disruptive episodes.


Clinical Research on Non-Sedating Profile

A separate body of research was evaluated to assess Analor's pharmacological profile and its effects on the central nervous system (CNS). Studies, often involving healthy volunteers, monitored measures such as reaction time, attention, and cognitive function compared against placebo and older antihistamines. The data show patterns related to minimal measurable change in psychomotor performance when Analor was studied for its standard dose. While the evidence suggests a low potential for sedation, the research indicates a degree of variability in reported experience. Data are still emerging, and certainty remains low regarding the full effects on CNS function in controlled studies utilizing elevated concentrations.


What Remains Uncertain About Analor's Research

Long-term effects are not fully established through specific, multi-year, placebo-controlled RCTs; instead, understanding of continuous use and long-term symptom patterns comes from ongoing observational evidence and registry reports. The majority of the available evidence consists of short-term or intermediate-term trials, and results apply only to the populations studied. Data show patterns related to measured change in core allergy symptoms, but comparative evidence is lacking for certain highly specific subgroups or disease severities.

Key Studies & References Risk of hypospadias in offspring of women using loratadine during pregnancy: a systematic review and meta-analysis (Special Population Study)

Frequently Asked Questions (FAQ)

Common questions about Analor (FAQ)


Q: How quickly does Analor usually start to work?

Official pharmacokinetic studies indicate that the effects of Analor usually begin within 1 to 3 hours after a single oral dose. This onset of action is based on research measuring antihistaminic activity in the body.


Q: Why do people say Analor makes them feel tired?

According to the official product information, somnolence, which refers to drowsiness or fatigue, is a documented common side effect. Regulatory documents report that this effect may affect up to 1 in 10 adult patients based on clinical trial data.


Q: Can Analor cause weight gain, based on research?

Studies have examined a range of possible effects, and regulatory documents classify increased appetite as an uncommon adverse event, affecting between 0.1% and 1% of patients in clinical trials. The product information describes this change in appetite as a potential finding from the research.


Q: What happens if you miss a day of Analor?

Official patient information advises against taking a double dose to compensate for a forgotten one. The medication is intended for a once-daily schedule, and following the labeled instructions for administration is recommended.


Q: Are there any long-term effects of taking Analor for years?

Regulatory documentation notes that long-term effects are not fully established through specific, multi-year, placebo-controlled trials. The current understanding regarding continuous use and long-term symptom patterns comes primarily from ongoing observational evidence and registry reports, which reflect patterns in the population.


Q: Does Analor affect sleep patterns?

The official safety profile notes that effects related to the Nervous System include both somnolence (drowsiness) and, less commonly, insomnia (difficulty sleeping). These findings are included in the adverse event lists documented during clinical use and surveillance.


Q: Can you drive or operate machinery while taking Analor?

Clinical studies examining driving ability found no impairment in the majority of patients taking the standard dose. However, official labeling notes that individuals should be aware that some people very rarely experience drowsiness, a potential side effect that may affect their ability to safely operate machinery or drive.


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

The evidence base supporting the approved uses of Analor consists primarily of short-term Randomized Controlled Trials (RCTs). These studies were conducted to examine outcomes related to the symptoms of allergic rhinitis (hay fever) and chronic idiopathic urticaria (hives).


Q: Is it normal to feel nauseous when first starting Analor?

The official safety profile documents nausea and gastritis as very rare adverse reactions within the Gastrointestinal Disorders class. These reports originate from clinical trials and post-marketing surveillance data.


Q: Can Analor be taken with common pain relievers?

Official regulatory guidance notes that Analor is generally compatible with common pain relievers like ibuprofen. However, if Analor itself contains acetaminophen, combining it with other products containing acetaminophen must be strictly avoided due to the significant risk of severe liver injury.


Q: How long does Analor stay in your system?

According to official pharmacokinetic data, the active ingredient has a mean elimination half-life of approximately 8.4 hours. The major active substance that the body creates from the drug remains in the system longer, with a half-life of approximately 28 hours.


Q: What are the most common reported interactions with food while taking Analor?

Official pharmacokinetic studies indicate that food may delay the time it takes for the drug to reach its peak concentration in the bloodstream by about one hour. However, the total amount of drug absorbed into the system is reported not to be affected.


Q: What are the typical side effects seen in children taking Analor?

Clinical trial data for the pediatric population (children aged 6–12) indicate that the most frequent adverse events reported include headache, nervousness, and fatigue. These events are used to establish the safety profile specific to that age group.


Q: Does Analor affect blood pressure readings?

Regulatory documents list tachycardia (increased heart rate) and palpitations as very rare effects reported in post-marketing surveillance. However, official information also notes that the drug has practically no measurable influence on overall cardiovascular function at recommended doses.


Q: Is there a link between Analor and mental clarity?

Research evaluated the drug’s effects on the central nervous system (CNS), including measures related to attention and cognitive function. Studies using the standard dose found patterns related to minimal measurable change in psychomotor performance when compared against a placebo.


Q: Is Analor known to cause any skin reactions or rashes?

The official safety profile documents that very rare (affecting fewer than 1 in 10,000 patients) reported skin issues include rash, alopecia (hair loss), and angioedema (swelling beneath the skin). These findings are based on regulatory surveillance data.


Q: Are there any specific lifestyle changes recommended when taking Analor?

Official product information advises that consumption of alcohol should be limited or avoided. This recommendation is based on regulatory information indicating that alcohol significantly increases the risk of severe liver damage when taken with the drug.


Q: Does Analor treat the cause of a condition or just the symptoms?

The medicine works by acting on the peripheral histamine H1-receptor, blocking the activity of histamine, which is the substance responsible for allergy symptoms. This mechanism confirms that the drug primarily modulates symptoms rather than addressing the underlying cause of the allergic response.


Q: What is the average duration of a study involving Analor?

The majority of the evidence comes from short-term Randomized Controlled Trials (RCTs). These trials typically have observation periods that range between approximately two to six weeks, reflecting the duration needed to study symptom changes.


Q: What is the typical age range of patients prescribed Analor?

Official regulatory documentation establishes dosing for both adults and children aged 2 years and older. The recommended dosage schedules have specific adjustments that are noted for different age and weight groups within this population range.


Q: Can Analor be split or crushed, or must it be swallowed whole?

Specific formulations, such as the orally disintegrating tablet, are designed to be placed on the tongue and swallowed without water. For standard tablet forms, official information emphasizes following the exact labeled instructions for administration.


Q: Is Analor a prescription-only medicine?

The legal classification of Analor varies depending on the country or region. In many major jurisdictions, including the US, Canada, and Australia, it is classified as an Over-The-Counter (OTC) medicine, meaning it is available without a prescription.


Q: Where can I find the official regulatory information on Analor?

The official, authoritative product information is published by government regulatory bodies. Key sources include the FDA / DailyMed (United States), the EMA / Summary of Product Characteristics (SmPC) (Europe), and the NIH / MedlinePlus.


Q: Can Analor be taken with herbal supplements?

Regulatory guidance notes that herbal remedies and supplements are generally not systematically tested for their potential interactions with pharmacy or prescription medicines. Therefore, specific information regarding the combined use of the drug with herbal supplements is limited.


Q: Can Analor affect the results of any laboratory tests?

Official product instructions note that administration of the drug must be discontinued for approximately 48 hours before undergoing any allergy skin testing. This precaution is taken because the presence of the drug can interfere with and alter the diagnostic results of those tests.


Q: Is Analor safe to use if I have kidney problems?

Official regulatory documents advise that patients with severe renal impairment (a condition affecting kidney function) must follow a dose adjustment schedule. This modification is intended to account for the drug's clearance, which may be altered in these patients.


Q: Why do doctors mention Analor and liver function together?

Official instructions require that patients with severe hepatic (liver) impairment follow a specific dose adjustment schedule. This is necessary because the drug is metabolized in the liver, and altered liver function can affect how the body processes the medication.


Q: What eligibility criteria are listed for people who can use Analor?

The official documentation notes that the medicine is contraindicated for people with known hypersensitivity to the drug. Furthermore, use is restricted or requires caution for individuals who are breastfeeding or those with severe hepatic or renal impairment.

How should Analor be stored and disposed of?

How to Store and Dispose of Analor? (Official Regulatory Information)

The official storage and disposal requirements for Analor are defined by pharmaceutical regulatory standards to maintain product safety and efficacy.

Storage and Handling

Condition Requirement
Temperature Store at Controlled Room Temperature, typically 20 C to 25 C (68 F to 77 F).
Protection Keep the product in its original, tightly closed container. Protect from excessive heat, freezing, and moisture.
Child Safety Store away from the reach and sight of children and pets.

Disposal Instructions

Unused or expired Analor should be disposed of using the safest and most environmentally responsible method. The preferred method is a drug take-back program or mail-back envelope. If these are unavailable, the medication must be mixed with an unappealing substance (such as dirt or coffee grounds) and sealed in a plastic bag before placing it in the household trash. The product should not be flushed down a toilet unless it is specifically listed on the official regulatory flush list.

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

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