Opsil Tears

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Opsil Tears

Medically reviewed

Marina Burgos

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 Opsil Tears

Property Description
Active ingredient Hypromellose (Hydroxypropyl Methylcellulose)
Form Ophthalmic solution, Eye drops
Pharmacological class Ocular lubricant
General purpose Tear film stabilization and surface wetting
Origin Semi-synthetic polymer (cellulose derivative)

Opsil Tears: Definition and Pharmacological Classification

Opsil Tears is an ophthalmic solution classified primarily as an ocular lubricant, prepared for topical application directly onto the eye surface. The formulation uses Hypromellose as its single active ingredient, which belongs to the category of artificial tears preparations. This preparation is designed to substitute or supplement the eye's natural tear film. Its classification within the pharmacological class of lubricants establishes its function as a physical protectant in ophthalmic care.

What is Hypromellose and Its Role as a Viscosity Agent?

The core component of the Opsil Tears formulation is the active ingredient, Hypromellose (INN), a semi-synthetic polymer chemically derived from natural cellulose. Hypromellose is integrated into a sterile aqueous vehicle to create the final solution. The principal function of this ingredient is that of a viscosity agent, increasing the fluid's thickness. This enhanced viscosity gives the eye drops a crucial physical characteristic, allowing them to remain on the corneal and conjunctival surface longer than simple non-viscous preparations, extending the duration of lubrication on the eye. Opsil Tears is specifically available in the ophthalmic solution dosage form, optimizing it for ease of application and distribution across the ocular surface.

General Purpose: Stabilizing the Tear Film and Providing Lubrication

The general purpose of Opsil Tears is to provide crucial mechanical lubrication and surface protection. By creating a protective, mucoadhesive layer, the solution helps in maintaining the stability of the precorneal tear film, which works to reduce the friction between the eyelid and the eye surface during blinking. This action is designed to address the physical sensation of discomfort, such as the gritty feeling often associated with insufficient or unstable tear films, thereby providing a clear therapeutic outcome without engaging in systemic drug action.

Regulatory References

  1. NIH DailyMed Label for Hypromellose Eye Drops

What side effects are possible with Opsil Tears?

Possible side effects and safety information

The safety profile of Opsil Tears, which contains Hypromellose, is primarily characterized by localized effects at the site of application. As an ocular lubricant, the active ingredient is considered pharmacologically inert, resulting in negligible systemic absorption and limiting adverse reactions almost entirely to the Eye disorders system-organ class, as documented in regulatory sources.

All officially listed adverse reactions are categorized with an Undetermined Frequency, meaning the rate of occurrence cannot be accurately estimated from the available data. However, the most commonly experienced effects are typically transient (temporary) and occur upon instillation.


Adverse Reactions and Safety Constraints

Category Officially Documented Effects
Adverse Reactions Transient blurred vision, eye pain, foreign body sensation, eye irritation, ocular hyperaemia (redness of the eye), and mild stinging upon instillation.
Serious Constraint Hypersensitivity (allergic reaction) to any component is a documented contraindication for use.

Regulatory Safety Notes

Population Safety: No systemic effects are anticipated in pregnant or breastfeeding women due to the negligible systemic exposure. No specific different safety information is available for pediatric or older adult populations compared to general adult use.

Excipient-Related Risk: The presence of the preservative Benzalkonium Chloride requires caution. This excipient is documented to potentially cause eye irritation, symptoms of dry eyes, and may affect the corneal surface, especially with prolonged use or in patients with pre-existing corneal damage. The solution is also noted in labeling to prolong the contact time of other ophthalmic medicines.

Overdose and Emergency Response

The official regulatory profile for Opsil Tears is based on the pharmacological properties of its active ingredient, Hypromellose (Hydroxypropyl Methylcellulose). Hypromellose is classified by government health authorities as an inert substance that has no pharmacological activity. Consequently, the product is officially documented as not absorbed systemically following topical administration to the eye.

Overdose Presentations and Actions

Expected Manifestations: Due to the compound's negligible systemic absorption, official regulatory labeling states that no toxic effects are to be expected with an ocular overdose of this product. No specific systemic symptoms, such as cardiovascular or neurological complications, are listed in official documents as potential manifestations of overdose.

When Immediate Medical Help Is Required: Despite the officially stated absence of expected systemic toxicity, regulatory guidance mandates that users must seek immediate medical attention or contact a Poison Control Center right away if the solution is accidentally swallowed.

Supportive Measures: There is no specific antidote known or mentioned in regulatory documentation for an overdose of this substance. Management for accidental ingestion is generally addressed by medical professionals using symptomatic and supportive treatment, if necessary, based on the specific clinical situation. No formal hospital monitoring requirements are specified in the product's official overdose sections.

Therapeutic Uses of Opsil Tears

What Opsil Tears Treats: Main Uses and Benefits

Opsil Tears is commonly used in the supportive management of conditions characterized by periods of heightened symptoms, such as Dry Eye Syndrome (DES) and keratoconjunctivitis sicca, associated with tear film instability. The application of this product provides the therapeutic benefit of ocular surface lubrication and protection, which may assist with the symptoms arising from tear deficiency.


The drops are relevant for easing symptom clusters related to physical discomfort, including the painful sensations of stinging, burning, and the uncomfortable feeling of grittiness or foreign body sensation. Opsil Tears is commonly applied when supportive symptomatic assistance is needed due to external factors like wind, air conditioning, or prolonged computer use. This functional support assists with maintaining functional stability for adults and older adults prone to tear instability.


Quick Fact: Used for managing symptoms related to physical discomfort


This product supports the patient during difficult episodes by easing distress and is used for managing symptoms that interfere with daily comfort. The product is relevant for addressing conditions characterized by periods of heightened symptoms such as tear deficiency, physical ocular irritation, and discomfort from environmental exposure.

Eligibility and Restrictions for Use

Eligibility Map: Who can and cannot use Opsil Tears — Official Regulatory Information

The eligibility profile for Opsil Tears (Hypromellose ophthalmic solution) is broadly permissive due to its local, non-systemic application. Restrictions are primarily related to known allergies and concurrent product use, as documented in official regulatory labeling.

Classification Eligibility Status
Populations Allowed Adults and the elderly (no dose adjustment is required for older adults).
Contraindicated Groups Patients with a known hypersensitivity to Hypromellose or to any excipients in the specific formulation.
Age Restriction Safety and efficacy in children and adolescents (under 18 years) are sometimes listed as not established due to insufficient specific data.
Organ Impairment No specific restrictions are documented for patients with hepatic or renal impairment.
Pregnancy & Lactation Generally permitted due to negligible systemic exposure, though some labels advise use only when considered essential by a physician.

Eligibility-Related Restrictions

For formulations containing the preservative Benzalkonium Chloride, official regulatory documents prohibit its use while soft contact lenses are worn. Lenses must be removed before instillation and can be reinserted only after a specific waiting period, typically 15 minutes, to prevent absorption of the preservative.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The regulatory profile for Opsil Tears (Hypromellose) defines its interaction requirements primarily through its local, non-systemic classification. As the active ingredient is an inert substance with negligible systemic absorption, official regulatory documents state that the product does not participate in systemic pharmacokinetic or pharmacodynamic interactions.


Interaction Scope

Category Official Regulatory Statement
Medicinal product categories with documented interactions Other topical ophthalmic products (other eye drops or ointments).
Mechanistic basis of interactions Physical Interaction: Locally increases the contact time of other concurrently applied ophthalmic drugs.
Timing-based interaction rules Mandatory requirement to allow an interval of at least 15 minutes between the application of Opsil Tears and any other topical ophthalmic medicine.
Population-specific interaction notes None documented for specific populations (e.g., hepatic or renal impairment).

Interaction Classifications (High-Level)

Category Classification Statement
Interaction severity classification Local interaction requiring administration-timing constraint. Systemic interactions are officially classified as Not Applicable.
Interaction-context constraints The interaction is constrained solely to local ophthalmic co-administration; it does not apply to systemic medications, food, alcohol, or supplements.

Resulting Interaction Structure

  • No clinically relevant systemic drug-drug interactions, or interactions with food or alcohol, are documented in official regulatory labeling.
  • The product interacts locally with other topical ophthalmic medicines by increasing the duration of their contact with the eye surface.
  • This local interaction requires a mandatory separation rule: Opsil Tears and any other eye preparation must be administered with an interval of at least 15 minutes between applications.

Regulatory documents establish that the interaction profile is strictly non-systemic, resulting in no documented statements concerning metabolic pathways or systemic transporters. This local timing rule is the sole regulatory requirement governing co-administration with other medicinal products.

Mechanism of Action

Opsil Tears, containing hypromellose (hydroxypropyl methylcellulose), operates through a physicochemical mechanism targeted to the ocular surface.

Opsil Tears is a hydrophilic polymer and functions as a demulcent and viscosity-enhancing agent with no direct receptor-mediated or enzymatic interaction. Upon instillation, the polymer accumulates at the cornea and conjunctiva interface, integrating with the existing tear film. Molecularly, it increases the viscosity of the aqueous layer of the precorneal tear film, which reduces its shear stress during blinking and decreases the rate of tear evaporation. This biophysical modification enhances the adherence and retention time of the tear fluid on the ocular epithelium. The system-level physiological consequence is the stabilization of the precorneal tear film and modulation of its break-up time, promoting a more continuous film over the epithelial cell layer.

Dosage and Administration Information

How to Use Opsil Tears

Opsil Tears is an ophthalmic solution for topical use only, administered directly to the surface of the eye. The administration guidelines are standardized due to the product’s function as an ocular lubricant that is not systemically absorbed.


Administration Guidelines

Feature Guideline
Route of Administration Topical instillation; Ocular use only.
Dosing Schedule (Adults & Children) Instill 1 or 2 drops into the affected eye(s).
Frequency Pattern As needed (prn) for temporary relief, or up to three or four times daily.
Age-Group Rules The dosage remains the same for adults, children, and the elderly.
Handling & Sterility Do not allow the container tip to contact any surface; replace the cap immediately after use.
Contact Lens Management Soft contact lenses must be removed before instillation if the product contains a preservative, and may be reinserted after 15 minutes.

Usage Protocol Structure

The product is intended for continuous or intermittent use, dictated by the ongoing need for external lubrication. Standard practice indicates that a drop that does not properly retain in the eye should be followed by the instillation of a second drop. Should a scheduled dose be missed, the procedure involves simply resuming the standard schedule at the next required time, without instilling an extra volume. These protocols ensure the sterile and consistent delivery of the labeled unit dose for effective ocular wetting.

Recent Clinical Evidence

Opsil Tears: Recent Clinical Evidence

Evidence for Use in Dry Eye Syndrome and Ocular Discomfort

The use of ocular lubricants containing Hypromellose, the active ingredient in Opsil Tears, was studied in the context of conditions characterized by fluctuating or episodic manifestations like Dry Eye Syndrome (DES) and other forms of ocular discomfort. The research available includes Randomized Controlled Trials (RCTs) and various comparative trials. These studies primarily focused on research exploring short-term symptom changes in adult populations. Research explored outcomes related to physical discomfort, with findings describing patterns observed in studies over follow-up periods lasting a few weeks. Systematic reviews suggest heterogeneity when studies involving these formulations are assessed alongside various comparators.


Outcomes Evaluated in Clinical Research

Research examined both patient-reported outcomes describing perceived discomfort and certain objective measurements of the eye's ocular surface health. Outcomes monitored included Tear Break-Up Time (TBUT) and changes in ocular surface staining, a clinical marker used to reflect physiological strain or stress on the cornea and conjunctiva. Research highlights changes measured during the study period, but research does not determine whether an individual will respond similarly, as study results reflect the specific conditions under which they were conducted.


Study Duration and Areas of Uncertainty

The typical duration of observation in the primary clinical research was limited, often ranging from two to twelve weeks. While these follow-up durations describe immediate or acute changes, long-term effects are not fully established. Evidence is limited regarding the durability of any reported effect after patients stop using the product. Subgroup findings are uncertain, as the evidence for patients with severe dry eye disease or other concurrent conditions is limited. High-level scientific reviews indicate that the overall certainty remains low, especially when attempting to draw comparative conclusions between Hypromellose and other different types of artificial tears.

Key Studies & References Randomized, Controlled Trial to Evaluate an Ocular Lubricant in Patients with Moderate Dry Eye Disease

Frequently Asked Questions (FAQ)

Common questions about Opsil Tears (FAQ)


Q: Can I use Opsil Tears if I am pregnant or breastfeeding?

Official product labels advise consulting a health professional if you are pregnant or breastfeeding before using this product. This caution is included in official labeling for use during pregnancy and lactation. The active ingredient in Opsil Tears, hypromellose, is generally considered pharmacologically inert and is not expected to be absorbed systemically.


Q: Are Opsil Tears available in a preservative-free single-use form?

Regulatory guidelines permit the manufacture of single-use, preservative-free ophthalmic solutions. Multi-use containers typically require a preservative to maintain sterility. However, official regulatory documents do not specify whether a preservative-free single-use form is currently available for the Opsil Tears brand.


Q: Is the active ingredient, Hypromellose, a prescription or over-the-counter drug?

The active ingredient found in Opsil Tears, Hypromellose (Hydroxypropyl Methylcellulose), is classified by regulatory authorities as an Over-the-Counter (OTC) ophthalmic demulcent active ingredient. This classification applies when the ingredient is used within specific concentration ranges documented in official drug monographs.


Q: Do Opsil Tears contain Benzalkonium Chloride or other inactive ingredients?

The specific inactive ingredients included in Opsil Tears can vary based on the manufacturer and the specific product formulation. Official product information indicates that some formulations of Hypromellose eye drops do contain Benzalkonium Chloride (BAK) as a preservative. Along with the active ingredient, other ingredients like salts and buffers are used to create the final sterile solution.


Q: Is it safe to use Opsil Tears continuously for more than 72 hours?

Regulatory product labeling advises that use should be stopped and a healthcare professional consulted if the eye condition worsens or persists for more than 72 hours. This time-limit is noted in official sources to ensure that underlying serious conditions are not masked by continued lubrication. Official labeling also directs that use should be discontinued if continued redness or irritation occurs.


Q: Can I use Opsil Tears if I wear soft contact lenses?

Official labeling for preservative-containing formulations states that soft contact lenses must be removed prior to instillation. This is due to the potential for the preservative Benzalkonium Chloride to be absorbed by the lenses. Lenses are typically reinserted 15 minutes after the drops have been applied, per official instructions.


Q: Are there any age restrictions for using Opsil Tears, such as for children?

Regulatory documents state that the recommended dosage of Hypromellose is typically the same for adults, children, and the elderly. However, official sources also note that the product’s safety and effectiveness in children and adolescents are sometimes listed as not fully established due to limited dedicated study data.

How should Opsil Tears be stored and disposed of?

Opsil Tears must be stored under specific conditions to maintain product stability and sterility, as mandated by regulatory documents.

Storage Scope Official Requirements
Temperature & Environment Store at Room Temperature, not exceeding 25 C. Do not freeze and protect from light and excessive heat.
In-Use Stability Discard multi-dose bottles 28 days after first opening, even if solution remains. Single-use vials must be discarded after a single use (if applicable).
Container Handling Keep the container tightly closed when not in use. Use the product only before the expiration date on the packaging.
Disposal Keep this medicine out of the sight and reach of children. Dispose of unused or expired product according to local regulations, avoiding disposal via wastewater.

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

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