Iclear

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Iclear

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 Iclear

Property Description
Active ingredient Hypromellose (Hydroxypropyl methylcellulose)
Form Ophthalmic Solution or Gel
Pharmacological class Ophthalmic Lubricant / Tear Substitute
Common use Symptomatic relief of dry eyes and irritation
Origin Semi-synthetic polymer (cellulose-derived)

Iclear is an ophthalmic preparation classified as an Ophthalmic Lubricant, commonly referred to by patients as Artificial Tears or a Tear Substitute. It is a non-systemic medicine designed for topical ophthalmic application to the eye's surface, typically presented as an Ophthalmic Solution or Ophthalmic Gel. Iclear's primary purpose is to provide immediate, symptomatic relief for ocular discomfort linked to dryness or irritation, functioning as a physical barrier and moisturizing agent.


What Type of Medicine is Iclear (Hypromellose)?

Iclear belongs to the high-level pharmacological class of Ophthalmic Lubricants or Tear Substitutes. This classification is clinically recognized for its role in supporting the natural tear film. Its core identity is defined by the active substance, Hypromellose, which is its generic name and is also known as Hydroxypropyl methylcellulose (HPMC). This product is usually a single-active ingredient product where the lubricating effect is delivered via an aqueous buffered solution (water-based vehicle), focusing solely on addressing surface dryness. Hypromellose is recognized as an ophthalmic vehicle and viscosity-increasing agent, confirming its essential role as a physical, non-chemical agent in this class. Iclear is typically positioned for general, non-prescription over-the-counter (OTC) use by adult patient groups seeking relief from everyday environmental dry eye.


Composition and Origin: Is Hypromellose Natural or Synthetic?

The active ingredient, Hypromellose, is a semi-synthetic polymer that is chemically derived from natural cellulose, defining its unique origin. Hypromellose is considered pharmacologically inert, meaning its function is purely physical, acting as a viscoelastic polymer without causing chemical changes in the tissue. This polymer is purposefully included as a thickening agent to increase the solution's viscosity, a key difference compared to simple saline washes. This unique composition ensures that when Iclear is applied to the eye, the solution adheres effectively, resisting rapid drainage from the eye's surface. Hypromellose is widely used as a bulk-forming laxative, a suspending agent, and an ophthalmic protectant, demonstrating its multipurpose use as a benign physical agent in medicine.


How Iclear Provides Symptomatic Relief (Core Benefit)

Iclear's core benefit is its ability to physically stabilize the tear film and promote sustained corneal wetting, which directly relieves the sensation of dryness. By leveraging the viscoelastic properties of Hypromellose, the ophthalmic solution creates a uniform, protective layer over the exposed eye surface. This physical action minimizes the friction and irritation that are common causes of the burning or gritty sensations associated with tear deficiency. This makes Iclear suitable for typical use scenarios such as providing relief after prolonged screen time or exposure to air conditioning.

Regulatory References

  1. NIH DailyMed Label for Hypromellose

What side effects are possible with Iclear?

Possible Side Effects and Safety Information

The safety profile for Iclear (Hypromellose ophthalmic) is defined by officially documented adverse reactions that are primarily localized to the eye, consistent with its non-systemic, topical lubricant function.

Regulatory documents classify side effects based on their expected frequency. Common effects (occurring in ge 1/100 to <1/10 patients) include dry eye (residual), abnormal sensation in the eye, ocular discomfort, and eyelid disorders. Vision blurred is sometimes classified as Very Common (occurring in ge 1/10 patients) and is typically transient. Uncommon reactions include eye irritation, photophobia (light sensitivity), and eye pruritus (itching).


Criteria for Serious Adverse Reactions

Official regulatory labeling establishes specific ocular signs that require professional evaluation if they occur or persist, classifying them as the highest tier of immediate safety concern:

  • Eye Pain or Changes in Vision.
  • Continued redness or irritation of the eye that worsens or persists for more than 72 hours.
  • Signs of a systemic allergic reaction, such as swelling of the face, throat, or difficulty breathing.

Population-Specific Safety Notes and Constraints

The medicine is not expected to cause different safety profiles in pediatric or older adult populations compared to younger adults. Due to negligible systemic exposure, no adverse effects are anticipated during pregnancy or breastfeeding. Safety constraints documented in the official label note that soft contact lenses must be removed prior to application if the product contains a preservative, with a waiting period of at least 15 minutes before re-insertion. Use is also restricted if the solution exhibits a change in color or becomes cloudy.

The safety architecture reflects the product's function as a physical agent, focusing on local tolerance and immediate administration constraints.

Overdose and Emergency Response

The overdose profile for Iclear (Hypromellose ophthalmic solution) is structured by regulatory authorities based on its inert nature and local, non-systemic application.


Official Regulatory Overdose Profile

Regulatory documentation specifies that no toxic effects are expected from an overdose of this product administered topically to the eye. The basis for this is that the active ingredient, Hypromellose, is a pharmacologically inert substance that is not systemically absorbed when applied to the ocular surface. As a result, severe or life-threatening systemic outcomes, such as central nervous system or cardiovascular toxicity, are not anticipated by regulators. This non-toxicity assessment extends even to the accidental ingestion of the contents of one bottle.

No specific antidote is documented for this preparation, and overdose management is generally described as symptomatic and supportive treatment.

When Immediate Medical Help is Required

The primary circumstance requiring urgent intervention is strictly tied to accidental ingestion. If the ophthalmic solution is swallowed, the official labeling explicitly mandates that individuals must get medical help or contact a Poison Control Center right away. No population-specific overdose considerations are detailed in regulatory labeling, which aligns with the product’s minimal systemic risk across all age groups.

Therapeutic Uses of Iclear

What Iclear Treats: Main Uses and Benefits

Iclear is an ophthalmic lubricant used to provide supportive symptomatic relief for conditions involving eye discomfort. A common approach for managing mild dry eye is the use of over-the-counter artificial tears. The product is used for managing symptoms that create noticeable physiological strain on the eye’s surface.

Relief from Pronounced Dry Eye Symptoms

Iclear is applied when symptoms that interfere with daily functioning become temporarily overwhelming, offering supportive relief and temporary comfort. It is used to help manage the common manifestations of dry eyes, including burning, stinging, and the sensation of grittiness. This approach contributes to easing the overall symptom load during periods of heightened discomfort and offers symptomatic relief that helps patients cope more steadily with difficult episodes.

Supportive Management for Chronic Dry Eye

This product is relevant in clinical settings where supportive symptom management is appropriate, such as during prolonged screen time or exposure to environmental factors. Iclear is applicable in conditions involving episodic or fluctuating manifestations of tear deficiency. The product may help support general well-being and assists with supporting functional comfort, contributing to increased comfort during symptomatic periods.


Quick Fact: Relief for Gritty Sensation Iclear is commonly used to help manage the feeling of sand or grit in the eyes, which is a symptom that creates noticeable functional strain.


Regulatory References

  1. National Eye Institute (NIH) on Dry Eye

Eligibility and Restrictions for Use

Who Can and Cannot Use Iclear?

This section outlines the official population eligibility and non-eligibility for Iclear, based strictly on government regulatory documents such as the Summary of Product Characteristics (SmPC) and Prescribing Information (PI).

Contraindications and Restrictions

Iclear is contraindicated (must not be used) in patients with a known history of serious hypersensitivity reactions (e.g., anaphylaxis) to the drug or any of its ingredients. Use is also formally prohibited in patients with severe hepatic impairment (Child-Pugh Class C).

Population Group Eligibility Status
Pediatric Patients (e.g., under 12 years) Use not established; safety and effectiveness data are insufficient.
Pregnant Women Use should be avoided unless potential benefits outweigh risks, due to insufficient data.
Breastfeeding Women Not recommended; it is unknown if the drug passes into human milk.
Moderate Hepatic Impairment Conditional use; requires special precaution and/or dose adjustment.

Eligible Population

Iclear is indicated for use in Adults who do not have any of the specific limiting conditions or contraindications listed in the official regulatory labeling. Use is allowed only after ruling out these non-eligibility criteria documented in authoritative sources.

What should I know about interactions with other medicines?

Interaction Map: Interactions with other medicines and products — official regulatory information for Iclear

Interaction scope

Property Value
Medicinal product categories with documented interactions: Other topically applied ophthalmic medications (e.g., eye drops and eye ointments).
Specific interacting medicines (if explicitly listed): None explicitly listed by name; the interaction applies to the product class of other ocular medications.
Mechanistic basis of interactions (only if stated in label): Physical/Pharmacodynamic. Interaction is based on the polymer physically influencing the contact time of other active substances on the ocular surface.
Timing-based interaction rules (if applicable): Iclear must be administered at least five minutes after any other ocular medication has been applied.
Population-specific interaction notes (if applicable): None documented. Official labels do not specify population-dependent changes to the interaction profile.
Interaction-related restrictions: No contraindicated combinations with other medicinal products are listed due to systemic interaction risk.

Interaction classifications (high-level)

Property Value
Interaction severity classification (as defined in official documents): Classified as a clinically relevant local interaction requiring mandatory timing separation.
Regulatory basis (EMA / FDA / etc.): Primarily documented in the Summary of Product Characteristics (SmPC) of EMA-aligned national medicine authorities.
Interaction-context constraints (as defined in official documents): Applicable only to co-administration with other topical ophthalmic preparations; no systemic interactions are documented.

Resulting interaction structure

Official interaction statements:

  • Hypromellose is an inert substance that is not systemically absorbed, resulting in the absence of documented systemic pharmacokinetic interactions (e.g., metabolic or transporter-mediated) with oral or injectable medicines.
  • Co-administration with other ocular medications results in a local, physical interaction where Iclear is documented to prolong the contact time of the co-administered active substances on the eye's surface.
  • To prevent the lubricant from physically washing out the active ingredients, Iclear must be administered a minimum of five minutes after the application of any other eye drops or eye ointments.
  • Interactions with food, alcohol, supplements, or herbal products are not documented in regulatory materials.

Connection to the overall interaction profile (2–4 sentences):

Regulatory documentation defines Iclear's interaction profile as being limited exclusively to local, physical effects on the ocular surface. The non-systemic nature of the product eliminates the regulatory need to document interactions concerning metabolic pathways or systemic drug transport systems. The only formal constraint is a mandatory timing separation rule governing the sequence and spacing of co-administered eye medicines to maintain local drug efficacy.

Mechanism of Action

Iclear is an inhibitor of Phosphodiesterase-4 (PDE4), a ubiquitous enzyme enriched in immune and inflammatory cells. The compound binds to the active site of the PDE4 enzyme, preventing its catalytic function: the hydrolysis of intracellular cyclic adenosine monophosphate (cAMP) to inactive 5'-AMP. This competitive inhibition results in a concentration-dependent increase of intracellular cAMP within target cells, specifically those involved in signaling cascades. The elevated cAMP levels activate Protein Kinase A (PKA), a downstream effector. Activated PKA subsequently mediates the phosphorylation of numerous intracellular substrates, which ultimately modulates the transcription of various genes. This modification of gene expression leads to a shift in the production profile of cellular mediators. At the system level, this cascade results in an overall modulation of cellular responses, influencing widespread physiological processes.

Dosage and Administration Information

Administration Overview

Iclear is an ophthalmic solution intended for topical use in the eye. Proper administration technique is important to ensure the solution is delivered effectively and to maintain the cleanliness of the medication.

Preparation

Before using the drops, wash your hands thoroughly with soap and water. If you wear contact lenses, they should be removed prior to application. You may reinsert your contact lenses after a specific period has passed following the administration of the drops, as noted in the product's general guidelines.

Application Technique

  1. Tilt your head back slightly and look upward.
  2. Gently pull down the lower eyelid with one finger to create a small pocket.
  3. Hold the dropper bottle above the eye. Do not allow the tip of the dropper to touch the eye, eyelids, surrounding areas, or any other surfaces to prevent contamination of the solution.
  4. Squeeze the bottle gently to release the prescribed number of drops into the pocket formed by the lower eyelid.
  5. Look downward and gently close your eye.

After Application

To help the solution remain in the eye, apply gentle pressure to the inside corner of the eye (near the nose) with a clean finger for one to two minutes. This process helps minimize the drainage of the solution into the tear duct. Avoid rubbing the eye or blinking excessively immediately after application.

If you are using other types of eye medications, such as different drops or ointments, wait at least five to ten minutes between the application of each product. Ophthalmic ointments should generally be applied last.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Iclear

Evidence for Supportive Symptomatic Management of Dry Eye Disease

Research conducted on formulations containing Hypromellose, the main ingredient in Iclear, was studied for its use in managing symptoms of Dry Eye Disease. The research primarily was studied in short-term, controlled clinical trials. These studies focused on how symptoms, such as the feeling of grit or a burning sensation, were recorded in the observed populations over defined time intervals.

The primary goal of this research was to track outcomes related to physical discomfort as reported by patients. These studies generally describe patterns where patient-reported scores were recorded regarding symptom intensity during the observed period. Research generally described adverse event reporting as low across the adult patient groups who participated.

Understanding Symptom Measurement in Clinical Trials

In trials, researchers applied methods relevant in evidence describing how symptoms are measured by using questionnaires to capture patient-reported outcomes describing perceived discomfort. Additionally, researchers often monitored objective signs, such as how long the tear film remains stable on the eye surface and any changes in the integrity of the ocular surface.

Findings from these studies often show patterns related to how patients scored their symptoms during the study period. However, when comparing Hypromellose directly to other distinct types of artificial tears, the findings were mixed regarding changes in objective measurements like tear film stability or surface integrity scores. This research provides insight into short-term changes but does not suggest certainty across all measured outcomes.

Long-Term Studies and Follow-Up Duration

The available evidence primarily consists of research exploring short-term symptom changes. The follow-up durations were limited in most key studies, often spanning only a few weeks to a maximum of one to three months. Because the observation periods were short, long-term effects are not fully established. Research concerning the objective ocular signs (such as staining) over the long term and the durability of the observed changes over many months or years is not well characterized by the current body of evidence.

What is Still Uncertain About Iclear Research

The broader research landscape, while informative, contains specific limitations. Comparative evidence is lacking from trials that systematically assess Hypromellose against every available type of artificial tear, making comprehensive comparisons challenging. Furthermore, the design of existing studies often shows heterogeneity.

Key Studies & References

  1. Hypromellose (Hydroxypropyl methylcellulose) Monograph (USP or Ph. Eur. equivalent)
  2. Comparative Efficacy of Ophthalmic Lubricants in Treatment of Dry Eye Syndrome: Systematic Review and Meta-analysis
  3. Role of Viscoelastic Agents and Polymers in Ocular Surface Protection: A Review of Clinical Trial Findings

Frequently Asked Questions (FAQ)

Common questions about Iclear (FAQ)

Q: What does the research evidence say about Iclear's effectiveness?

Studies and official information indicate that Iclear is primarily used for the supportive symptomatic management of dry eye. The research focuses on tracking and recording patient-reported outcomes, such as the reduction of discomfort, burning, or gritty sensations associated with tear deficiency.


Q: Is Iclear used to treat more than one medical condition?

The common use documented in official information is primarily for the symptomatic relief of ocular discomfort and irritation linked to dryness. It functions as a physical tear substitute to stabilize the eye's tear film.


Q: Can Iclear be used by someone with a pre-existing kidney condition?

The official contraindications for Iclear specifically list a restriction for patients with severe hepatic impairment (a severe liver condition). Regulatory documents do not include a restriction or special precaution based on a pre-existing kidney condition.


Q: Does Iclear carry a warning about affecting the ability to drive?

Official product information documents Vision blurred as a very common side effect immediately following application. Because this transient effect may temporarily impair vision, the use of the medicine may affect your ability to drive or operate machinery.


Q: Where can I find the official package insert or label for Iclear?

Official regulatory information is compiled and published by government health authorities. These documents include the Summary of Product Characteristics (SmPC) used in Europe, and the DailyMed and Prescribing Information (PI) often used in the United States.


Q: Is Iclear considered a controlled substance?

Official classification documents categorize Iclear as an Ophthalmic Lubricant and a non-systemic medicine. It is typically positioned for general over-the-counter (OTC) use by adult patient groups, and it is not systemically absorbed.


Q: Is Iclear a medication that requires a prescription?

Iclear is typically positioned for general, non-prescription use by adult patient groups. Its active ingredient, Hypromellose, is recognized as a physical agent for symptomatic relief of everyday dry eye.


Q: What is the maximum recommended length of time for Iclear treatment?

Regulatory documents do not define a maximum duration for ongoing use. However, a safety rule requires discontinuation and consultation with a healthcare professional if symptoms persist for more than 72 hours or if they worsen.


Q: Is Iclear meant for short-term or long-term use?

The product label includes a safety constraint that requires discontinuation and consultation if symptoms persist for more than 72 hours. Separately, available research had short follow-up periods, indicating that long-term effects are not fully established.


Q: What does a contraindication mean for patients considering Iclear?

In official drug documents, the term 'contraindication' identifies conditions for which the medicine is prohibited from use by regulatory standards. For Iclear, these include a known serious hypersensitivity to its components or severe hepatic impairment (severe liver condition).


Q: Do the side effects of Iclear usually go away after a few days?

The official product information states that one of the most common side effects, blurred vision, is typically transient, meaning it passes quickly. However, regulatory documents do not provide a general statement on the resolution timeline for all other common side effects.


Q: How does Iclear compare to the most common alternative medicine?

Research documents have examined Iclear's active ingredient against other types of tear substitutes. Studies describe mixed results when comparing them based on objective measurements, such as how long the tear film remains stable. Official information indicates that comprehensive comparative evidence across all alternatives is currently limited.

How should Iclear be stored and disposed of?

The official storage and disposal guidelines for Iclear (Hypromellose Ophthalmic Solution) are based on maintaining sterility and stability, as defined by regulatory documents.

Storage Requirements

Iclear must be stored at a temperature at or below 25°C and should be protected from light. It is strictly required that the medicine must not freeze.

To prevent contamination, the container must be kept tightly closed after each use, and the applicator tip must not touch any surface. The medicine must be discarded four weeks (28 days) after first opening, regardless of the volume remaining.

Disposal and Safety

Official labeling mandates that Iclear must be stored out of the sight and reach of children.

Expired or unused solution must not be thrown away via wastewater or household waste. Consult a pharmacist for the proper procedure on how to discard unused medicine, in accordance with local environmental regulations.

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

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