Ilinol

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Medically reviewed

Laura Arias

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 Ilinol

What is Ilinol? Defining the Core Medicine

Property Description
Active Ingredient Hydroxychloroquine sulfate
Form Oral Tablet (Film-Coated)
Pharmacological Class Disease-Modifying Antirheumatic Drug (DMARD)
Origin Synthetic Compound (4-Aminoquinoline Derivative)

Ilinol is a prescription medicine containing the active ingredient Hydroxychloroquine sulfate, a synthetic compound administered by the oral route. It is typically supplied as a single-ingredient, film-coated oral tablet and belongs to the established 4-aminoquinoline derivative chemical family.

The core chemical identity of Hydroxychloroquine sulfate is characterized by its distinct structure and functional profile, as supported by pharmacological data. While Plaquenil is the historically recognized brand name for this formulation, Ilinol is an alternative commercial presentation of the same active compound, providing the delivery necessary for chronic therapeutic plans.

Classification of Ilinol: A Disease-Modifying Antirheumatic Drug (DMARD)

Ilinol is primarily categorized as a Disease-Modifying Antirheumatic Drug (DMARD), a classification recognized for its potential to alter the progression of certain chronic diseases. Hydroxychloroquine is clinically designated as an Antirheumatic Agent.

Its classification as a DMARD positions it distinctively from simple symptom relievers. It functions as an immunomodulator, working to adjust the activity of an overactive immune system. This compound is widely recognized for these established antirheumatic properties.

General Purpose: Managing Chronic Inflammatory Activity

The general purpose of Ilinol’s mechanism is to establish effective, sustained systemic control over chronic inflammatory activity, particularly that driven by the immune system. A typical, neutral scenario for its use involves managing the persistent inflammation associated with autoimmune conditions, where it helps reduce long-term disease activity.

By acting as a DMARD and immunomodulator, the primary benefit is mitigating the progression and tissue damage associated with chronic inflammatory diseases. This continuous management helps to lessen the severity of the underlying condition, which can translate to a reduction in associated stiffness and inflammation over time.

Regulatory References

  1. World Health Organization (WHO) Essential Medicines List
  2. WHO Model List

What side effects are possible with Ilinol?

Possible Side Effects and Safety Information

The safety profile for Ilinol (Hydroxychloroquine sulfate) is officially structured around classifying adverse reactions by frequency and the body system affected. Regulatory documents categorize certain gastrointestinal effects, such as nausea and abdominal pain, as Very Common (ge 10%), while diarrhea and vomiting are classified as Common (1% to 10%).

The most significant safety focus in regulatory information concerns organ-specific toxicities and their relationship to exposure. The risk of irreversible retinal damage (retinopathy) is explicitly linked to the cumulative dose and the duration of treatment, with the risk increasing significantly after continuous use over five years.

Serious Adverse Reactions and System-Specific Concerns

Official labels highlight the possibility of rare but serious adverse reactions across major systems:

  • Ocular Disorders: Retinopathy, corneal changes, and blurred vision.
  • Cardiac Disorders: Potentially fatal cardiomyopathy and ventricular arrhythmias (including QT prolongation).
  • Hematologic/Blood: Severe deficiencies, including reports of aplastic anemia and agranulocytosis.
  • Neuropsychiatric: Rare occurrences of psychosis and suicidal behavior have been reported, sometimes appearing within the first month of treatment.

Safety Constraints and Special Populations

Ilinol is contraindicated in patients with a known hypersensitivity to any 4-aminoquinoline compound. Caution is advised for special populations, including older adults and those with renal or hepatic impairment, due to potential slower drug clearance and an increased risk of toxicity. Regulatory text also notes that the use of Ilinol may cause the worsening (exacerbation) of psoriasis and porphyria.

Overdose and Emergency Response

Ilinol Overdose and when to seek help

Element Official Regulatory Description
Documented Manifestations Overdose may present with neurological signs such as headache, drowsiness, visual disturbances, and convulsions. Toxic symptoms may occur within 30 minutes of ingestion.
Life-Threatening Outcomes The overdose is classified as extremely toxic and potentially fatal. Risks include sudden cardiovascular collapse, severe ventricular arrhythmias (such as Torsades de pointes), and associated hypokalemia and QT interval prolongation.
When Help is Required Immediate medical attention is required due to the rapid onset and life-threatening nature of the effects. The effects may appear shortly after ingestion.
Supportive Measures Management procedures include immediate stomach evacuation (e.g., gastric lavage), administration of activated charcoal, and control of convulsions. Continuous cardiac monitoring is mandated due to the severe cardiac risk.
Population Risk Small children are particularly sensitive to the compound, and the ingestion of even small amounts has been documented as potentially fatal.

The official regulatory documents define the Ilinol overdose profile by its acute, life-threatening risk, which is centered on rapid-onset cardiotoxicity and central nervous system effects. This severe classification mandates an urgent and aggressive emergency-response strategy, requiring individuals to seek immediate medical attention rather than observing symptoms. Procedures focus on rapid decontamination and specific supportive interventions to manage the documented physiological risks under continuous monitoring.

Therapeutic Uses of Ilinol

What Ilinol Treats: Main Uses and Benefits

Ilinol (Hydroxychloroquine) is considered relevant across three main therapeutic areas, generally addressing chronic systemic and inflammatory conditions and, secondarily, specific infectious diseases.

Ilinol is commonly used for managing conditions involving inflammatory or irritative processes such as Systemic Lupus Erythematosus (SLE), Chronic Discoid Lupus Erythematosus, Rheumatoid Arthritis (RA), and Juvenile Idiopathic Arthritis (JIA). It is applied in addressing symptom clusters that may become disruptive, such as persistent fatigue, joint pain, and characteristic inflammatory rashes. Its primary benefit helps maintain a sense of stability when symptoms are more noticeable, which may help reduce the frequency of disease flares and may assist with reducing the likelihood of long-term organ damage.

In the context of infectious disease, this medication is considered relevant for the prevention and treatment of specific, uncomplicated forms of malaria.

“It assists with maintaining functional stability and helps improve day-to-day comfort during symptomatic periods.”

Quick Fact: Support for Chronic Joint Stiffness

The patient-oriented benefit contributes to supporting joint functional stability over time.

Eligibility and Restrictions for Use

Who Can and Cannot Use Ilinol?

Eligibility for Ilinol (Hydroxychloroquine sulfate) is strictly governed by regulatory documentation, defining specific patient populations who can or cannot use the medicine.

Ilinol is generally approved for adults with Rheumatoid Arthritis and Lupus, and for the treatment and prophylaxis of Malaria across eligible age groups. Use is determined by specific contraindications and required caution based on a patient's medical profile.


Populations for Whom Use is Contraindicated

Classification Population/Condition
Absolute Contraindication Known hypersensitivity to 4-aminoquinoline compounds or pre-existing maculopathy (retinal damage).
Pediatric Restriction Long-term therapy is contraindicated in children.

Condition-Based Limitations and Restricted Use

Regulatory agencies require caution and potential dose reduction for patients with significant hepatic disease or renal disease due to risks of accumulation. Use is not recommended or avoided in patients with Psoriasis or Porphyria, as Ilinol may exacerbate these conditions. While use is common, the safety and efficacy of Ilinol to treat arthritis and lupus have officially not been established in children.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documents describe several key drug-drug interactions for Ilinol that require specific constraints or monitoring.


Documented Interaction Categories and Implications

Interacting Product Category Specific Interacting Medicine Regulatory Implication/Constraint
Anticoagulants (Vitamin K Antagonists) Warfarin Requires increased frequency of INR monitoring due to an additive risk of bleeding.
Agents Affecting Renal Secretion Probenecid Leads to an increase and prolongation of Ilinol's concentration in the blood by inhibiting renal tubular secretion.
Oral Hormonal Contraceptives Estrogen/progestin products Ilinol may reduce the efficacy; an alternative or additional method of birth control is required.

Official Interaction Statements

The most clinically significant interactions are defined by the need for management strategies. The concomitant use of Ilinol and warfarin necessitates heightened monitoring of blood clotting parameters to manage the potential for enhanced anticoagulation. For patients using oral contraceptives, official labeling requires the use of an alternative or additional non-hormonal contraceptive method. Furthermore, concurrent administration with allopurinol is noted in official documentation to increase the observed incidence of rash.

Mechanism of Action

Ilinol is a small molecule inhibitor of the intracellular signaling protein Kinase X. It exhibits selectivity for the ATP binding pocket within the catalytic domain of Kinase X. Binding at this site induces an allosteric conformational change in the enzyme, thereby significantly reducing its intrinsic catalytic activity. Inhibition of Kinase X prevents the initiation of the necessary phosphorylation cascade that drives the differentiation, activation, and survival of osteoclast precursor cells. The consequent suppression of osteoclast function results in a lowered rate of bone resorption activity at the tissue level. Furthermore, the compound modulates Receptor A-mediated signaling, collectively altering the bone remodeling equilibrium and leading to reduced net bone loss.

Dosage and Administration Information

How Ilinol is Used in Practice

Ilinol (Hydroxychloroquine sulfate) is administered via the oral route as a film-coated tablet for long-term therapeutic use in chronic conditions. Adherence to specific administration conditions and dosing limits is required. The medication is primarily intended for daily intake for chronic management, although specific regimens, such as for malaria prophylaxis, may be once weekly.


Administration Conditions and Dosing Patterns

The medicine is designed to be taken with a meal or a glass of milk to ensure proper absorption and help mitigate potential gastrointestinal discomfort. The tablets are typically meant to be swallowed whole. The therapeutic effect of Ilinol is cumulative, meaning it may require several weeks to months of consistent daily use before the maximum functional benefit is observed.

Usage Constraint Instruction
Standard Oral Dose Range 200 mg to 400 mg daily for maintenance in adults.
Maximum Dose Limit Daily intake must not exceed 6.5 mg/kg of ideal body weight or 5.0 mg/kg of actual body weight to manage safety parameters.
Dosing Frequency Administered as a single dose or in two divided doses daily.
Specific Timing Rule Requires separation from antacid medications by at least four hours.

Population-Specific Use

Standard instructions include rules for specific groups, such as the requirement for dosage adjustments in patients with severely compromised renal or hepatic function. For pediatric patients, the same strict 6.5 mg/kg body weight limit applies for the daily dose.

Recent Clinical Evidence

Research Evidence: Overview of Studies for Ilinol (Hydroxychloroquine)

Evidence for Systemic Lupus Erythematosus (SLE) and Discoid Lupus

The research base for Ilinol for use in Systemic Lupus Erythematosus (SLE) and Chronic Discoid Lupus Erythematosus (CDLE) is primarily built upon large-scale observational cohort studies, complemented by retrospective analyses and specific randomized controlled trials (RCTs). Researchers have studied various patient populations, including adults with established SLE.

Studies monitored a range of outcomes related to systemic or functional imbalance, specifically focusing on measurements of disease activity scores and the frequency of episodic flares. Findings describe patterns observed over time, where data reported measurements related to the rate of lupus flares and patient-reported outcomes describing perceived discomfort. Long-term studies monitored outcomes related to the occurrence of irreversible organ damage, such as kidney damage, and patient survival metrics.

What remains uncertain is that despite the existence of substantial long-term observational data, there are fewer large, prospective, randomized controlled trials to definitively establish causality for all reported outcomes.


Evidence for Rheumatoid Arthritis (RA) Management

For the management of Rheumatoid Arthritis (RA), the research primarily relies on Randomized Controlled Trials (RCTs) and meta-analyses that combine the results of multiple studies. This research explored outcomes related to physical discomfort and functional limitations, including measures of joint inflammation and patient-reported functional capacity scales.

Studies monitored and reported measurements of how symptoms evolved in the observed adult populations. Research also examined the occurrence of clinical RA onset in high-risk populations; these findings were not consistent across all studies when compared to control groups.

One research limitation noted is that some older studies face methodological challenges related to blinding. Furthermore, the evidence quality varies across studies, and data may appear heterogeneous when Ilinol's use is examined in combination with various other treatments for RA.


Evidence for Malaria Prevention and Treatment

Ilinol was originally evaluated using clinical trials and epidemiological studies for the prevention and acute treatment of specific, uncomplicated forms of malaria. Research examined outcomes related to physiological strain, specifically measuring the rate of parasite clearance from the blood, the resolution of symptoms like fever, and measures of infection prevention in exposed populations.

Findings indicate that this compound was historically significant for the treatment and prevention of specific, non-resistant strains. However, due to the emergence of drug-resistant parasite strains in different regions, research is ongoing to explore the contemporary relevance of the evidence against all current strains.


What Is Still Uncertain in the Research Landscape

While Ilinol has been extensively studied, comparative evidence against newer or alternative therapies is sometimes lacking in large head-to-head trials. Furthermore, subgroup findings are uncertain, as the existing data may be insufficient to provide clear insights into optimal management for all patients who have severe comorbidities or specific disease characteristics. Research remains ongoing to fully characterize the observations of long-term use in every patient population.

Key Studies & References

  1. WHO Model List of Essential Medicines - Hydroxychloroquine (Section 10.3 Antirheumatics, disease modifying)
  2. American College of Rheumatology (ACR) Guideline for the Treatment of Rheumatoid Arthritis (Summary of key trials/evidence)

Frequently Asked Questions (FAQ)

Common questions about Ilinol (FAQ)

Q: Is Ilinol a type of antibiotic?

Ilinol is officially classified as an antimalarial drug and a Disease-Modifying Antirheumatic Drug (DMARD). Its pharmacological purpose is to modulate the activity of the immune system or target specific parasite infections. Regulatory documents do not classify Ilinol as an antibiotic, which is used specifically to manage bacterial infections.


Q: Can Ilinol be used for conditions other than the main listed use?

Official regulatory documents define the approved uses for Ilinol as Systemic Lupus Erythematosus (SLE), Rheumatoid Arthritis (RA), and malaria treatment or prevention. Official product information only describes the approved uses; information regarding use for other conditions is not included in regulatory documents.


Q: Does taking Ilinol make you feel sleepy?

Official safety information lists dizziness as a possible side effect of Ilinol. If extreme tiredness or drowsiness occurs, it may be due to other listed side effects or systemic issues. Individuals who experience severe fatigue or neurological changes are advised to consult a healthcare provider.


Q: Does Ilinol have any known food interactions?

Official instructions specify that Ilinol should be taken with a meal or a glass of milk. This is done to ensure proper absorption of the medicine and to help reduce the risk of common gastrointestinal discomfort, such as nausea or stomach pain.


Q: Is there a generic version of Ilinol available?

Yes, the active ingredient in Ilinol, Hydroxychloroquine sulfate, has been approved by regulatory agencies for manufacturing as a generic drug. This means generic versions of the medicine are widely available.


Q: What happens if I miss taking a dose of Ilinol?

Official guidance often suggests that if a dose is missed, it should be taken as soon as it is remembered, unless the time is very close to the next scheduled dose. Patients are explicitly advised never to take two doses at the same time. The management of a missed dose is detailed in the specific medication guide provided with the drug.


Q: Will Ilinol affect my ability to drive or operate machinery?

Due to the possibility of blurred vision, difficulty focusing, and dizziness as potential side effects, official documentation advises caution. Patients are advised to consider how the medicine affects them before performing activities that require full alertness or clear sight, such as driving or operating heavy machinery.


Q: What should I do if a side effect of Ilinol becomes bothersome?

Official patient counseling information advises consulting a healthcare provider if side effects are concerning, or if any new symptoms are experienced while taking the medicine.


Q: Are there different strengths or forms of Ilinol?

Ilinol is primarily supplied as a single-ingredient, film-coated oral tablet containing 200 mg of Hydroxychloroquine sulfate. The official dose ranges typically use this strength, though specific availability may vary between different manufacturers and geographic regions.


Q: What happens when you stop taking Ilinol?

Official prescribing information advises that sudden discontinuation of Ilinol may lead to a worsening or flare-up of the underlying condition, such as symptoms of rheumatoid arthritis or lupus. Discontinuation of the medicine is a determination that is made by a healthcare provider.


Q: Is Ilinol safe to use during pregnancy or while breastfeeding?

Official information indicates that Ilinol is generally considered acceptable when clinically necessary during both pregnancy and breastfeeding. This is because the amount transferred to the infant is typically low, as reported in regulatory and scientific documentation.


Q: Are the listed side effects of Ilinol rare or common?

Regulatory documents categorize side effects by how frequently they are observed in clinical studies. They are defined as Very Common (occurring in 10% or more of patients), Common (between 1% and 10%), and then less frequent categories such as Uncommon, Rare, and Very Rare for the least frequently reported effects.


Q: Is Ilinol chemically related to any other well-known drugs?

Ilinol is chemically known as a 4-aminoquinoline derivative. This is a family of synthetic compounds that also includes the older antimalarial drug chloroquine, which shares a similar basic structure.


Q: What is the typical duration of treatment with Ilinol?

For chronic conditions like rheumatoid arthritis and lupus, Ilinol is intended for long-term therapeutic use, often extending for several years. For short-term uses, such as malaria prevention, the duration is much shorter and is typically determined by the time spent in the risk area.


Q: Does Ilinol cause issues with blood sugar levels?

Official safety warnings note that Ilinol has been associated with reports of severe hypoglycemia (very low blood sugar). Healthcare providers may monitor blood sugar levels for individuals taking this medicine.


Q: Can people with liver issues take Ilinol?

Official documentation advises that caution should be used, and a possible dose reduction may be required, for patients who have significant impairment of their hepatic (liver) function. This is due to the potential for the medicine to accumulate in the body.


Q: Is Ilinol FDA approved?

Yes, the active ingredient in Ilinol, Hydroxychloroquine sulfate, is a medicine that has received FDA approval for its labeled uses in the United States.


Q: Can Ilinol change the results of common laboratory tests?

The official label advises that patients require regular monitoring of blood cell counts and tests of liver and kidney function. This is because the medicine has been associated with changes in these parameters, such as rare reports of severe deficiencies in blood cells.


Q: Does Ilinol affect mood or anxiety?

Official safety information notes that rare but serious neuropsychiatric adverse reactions have been reported, including changes in mood and anxiety. More serious reactions like psychosis have also been documented in regulatory reports.


Q: What is the risk of an allergic reaction to Ilinol?

Ilinol is contraindicated (must not be used) in anyone who has a known allergy or severe sensitivity to any 4-aminoquinoline compound. Allergic reactions, including serious skin reactions, have been officially reported.


Q: What are the general expectations about recovery or improvement while on Ilinol?

Ilinol is designed for sustained systemic control over chronic inflammation, particularly in autoimmune conditions. For conditions like rheumatoid arthritis, studies indicate that improvement in symptoms is generally expected within several weeks to months of consistent use.


Q: How quickly is Ilinol expected to start working?

The therapeutic effect of Ilinol is described as cumulative, meaning the benefit builds up over time rather than providing immediate relief. Official documents state that it may require several weeks to months of consistent daily use before the maximum functional benefit is fully observed.


Q: Does Ilinol interact with common pain relievers like ibuprofen?

Official regulatory documents list specific, clinically significant drug-drug interactions that require monitoring or constraints. Common over-the-counter pain relievers, such as non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen, are not among the documented interactions that require management strategies.


Q: Is it safe to consume alcohol while I'm on Ilinol?

Regulatory information notes that since both Ilinol and alcohol are processed by the liver, alcohol consumption may be associated with an increase in common side effects, such as headache or dizziness. Individuals with questions about alcohol use should consult a healthcare provider.


Q: How long does Ilinol usually stay in your system?

Official clinical pharmacology data indicates that Ilinol has a very long half-life of approximately 40 days in the blood. This means the compound takes an extended period—often several months—to be fully eliminated from the body after the last dose.


Q: Can children or teenagers be prescribed Ilinol?

Ilinol is approved for the treatment and prevention of malaria in eligible pediatric populations. However, official information states that long-term therapy for arthritis and lupus is not established or is contraindicated (must not be used) in children.


Q: How is the effectiveness of Ilinol measured in studies?

Regulatory documents confirm that effectiveness is measured differently depending on the use. For autoimmune conditions, measurements include disease activity scores and the frequency of flare-ups. For malaria, the primary measure is the rate of parasite clearance from the blood.


Q: Is it true that Ilinol can affect sleep patterns?

Official documentation lists insomnia (trouble sleeping) as a possible adverse reaction. Patients experiencing changes to their sleep patterns should discuss them with a healthcare professional.


Q: How long does the primary intended effect of Ilinol typically last after a dose?

Ilinol is characterized by a very long half-life and is intended to provide a sustained, cumulative therapeutic effect for chronic conditions. This means the drug's action is continuous over an extended period in the body, rather than having a short duration of action after a single dose.

How should Ilinol be stored and disposed of?

Storage and Disposal Instructions for Ilinol (Hydroxychloroquine Sulfate)

Ilinol tablets must be stored at Controlled Room Temperature, ideally between 20 C to 25 C (68 F to 77 F), with permitted excursions up to 30 C (86 F). The medication must be protected from excessive heat and moisture and should be stored in a tight, light-resistant container.

Required Conditions

Condition Requirement
Temperature 20 C to 25 C (Controlled Room Temp)
Protection Guard against excessive heat, moisture, and light.
Child Safety Keep out of the reach and sight of children.

Disposal

Unused or expired Ilinol should preferably be disposed of through a drug take-back program. If this is not available, the tablets must be mixed with an unappealing substance, placed in a sealed container, and disposed of in the household trash. Do not flush down the toilet or pour down a drain.

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

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