Viscomet

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Viscomet

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 Viscomet

Property Description
Active ingredient Hypromellose (Hydroxypropyl methylcellulose)
Form Sterile Ophthalmic Solution (Eye Drop)
Pharmacological class Ophthalmic Lubricant, Tear Substitute
Common use Ocular lubrication
Origin Semi-synthetic polymer (Derived from cellulose)

What Type of Medicine is Viscomet (Hypromellose)?

Viscomet is an ophthalmic preparation classified as a Tear Substitute and Ophthalmic Lubricant, designed to supplement the eye's natural moisture. The product's identity is defined by its sole active component, Hypromellose, which is the International Non-proprietary Name (INN) for Hydroxypropyl methylcellulose. Viscomet belongs to the high-level pharmacological class of agents used for replacing or supplementing the tear film. This substance is considered an inert substance because it works purely through physicochemical action on the eye's surface, classifying it as a non-pharmacological agent for topical ocular application. Hypromellose is frequently used in topical ophthalmic preparations to protect the cornea and aid healing. This clinically recognized application means the primary function of Viscomet is protective and supportive rather than chemical.


Composition and Functional Form: Semi-Synthetic Polymer

Hypromellose is a semi-synthetic polymer derived from natural cellulose, which is responsible for the unique lubricating properties of Viscomet. The formulation is primarily available as a Sterile Ophthalmic Solution (Eye Drop) for general surface lubrication. The key characteristic of this compound is its viscoelastic polymer structure, which allows it to maintain the necessary consistency for ocular use. This cellulose derivative plays an essential role in stabilizing the tear film and providing extended relief from ocular discomfort. Its composition is often buffered to maintain an isotonic balance with the eye, a differentiating factor that enhances patient comfort during use. Furthermore, specific formulations of Hypromellose may be prepared as highly concentrated Viscoelastic Preparations (often in a prefilled syringe), distinguishing them as a surgical aid used by professionals during specific ophthalmic procedures.


General Purpose of Viscomet as an Ocular Lubricant

The general purpose of Viscomet is to provide extended ocular lubrication and stabilize the protective moisture layer on the eye's surface. The viscoelastic nature of the Hypromellose component enables it to increase the tear viscosity, which helps prevent the natural tears from evaporating too quickly. By creating a stable, temporary film, the preparation functions to improve the eye's surface moisture consistency, thereby mitigating the general discomfort associated with dryness or surface friction. This protective role confirms its utility as an essential agent for daily corneal protection and surface comfort, commonly employed by adults and the elderly seeking routine relief from environmental irritation.

Regulatory References

  1. NIH DailyMed: Hypromellose
  2. National PAR on Hypromellose Use (Dutch MEB)

What side effects are possible with Viscomet?

Possible Side Effects and Safety Information

Viscomet, an ophthalmic solution containing the polymer Hypromellose, functions primarily through a local, physicochemical action on the surface of the eye. Consistent with this non-systemic use, the official safety profile, as documented by regulatory authorities, is dominated by adverse reactions classified under the Eye disorders system-organ class.


Frequency-Classified Adverse Reactions

The majority of side effects are localized and categorized based on observed frequency in clinical use:

  • Common (may affect up to 1 in 10 people): Reactions are typically transient and include temporary blurred vision, eye irritation, general eye discomfort, a sensation of a foreign body in the eyes, and ocular hyperaemia (redness).
  • Uncommon (may affect up to 1 in 100 people): Documented occurrence of localized ocular pain.
  • Rare (may affect up to 1 in 1,000 people): Hypersensitivity (allergic reactions) are listed within the Immune system disorders class.

Key Safety Considerations

The most frequently reported adverse effects, such as blurred vision and discomfort, are explicitly noted in regulatory documentation as being more common immediately after application. These effects are considered transient, resolving quickly as the solution spreads evenly across the eye's surface.

The most significant safety restriction is the contraindication against use in any individual with a known hypersensitivity or allergy to Hypromellose or any other component of the formulation. This constraint addresses the potential for the most serious documented adverse event: a severe allergic reaction.

Overdose and Emergency Response

The official regulatory profile for Viscomet (Hypromellose) ophthalmic solution indicates that an overdose is not expected to produce toxic effects due to the preparation's inherent characteristics. Hypromellose is classified by government authorities as a pharmacologically inert substance designed solely for physicochemical action on the eye's surface. As a result, systemic exposure following topical ocular administration is considered negligible, and no serious systemic toxicity, such as neurological or cardiovascular effects, is documented in official labeling. Consequently, the preparation is assigned an expected negligible risk profile concerning toxicity.

Regulatory guidance focuses primarily on actions required in the specific circumstance of accidental ingestion of the solution's contents. Immediate medical assistance must be sought in the event that the liquid is swallowed. Official documentation instructs users to either contact a doctor or call a poison control center immediately for guidance. The preparation’s expected non-toxic profile means that no specific antidote is required or documented in the regulatory labeling. Subsequent management is generally described as symptomatic and supportive care. No explicit requirements for continuous hospital monitoring or population-specific overdose considerations are listed in the authoritative government documents.

Therapeutic Uses of Viscomet

Viscomet is an ophthalmic viscosurgical device (OVD)—a sterile, viscoelastic solution applied across domains where additional symptomatic support is needed during complex eye procedures. It is relevant in clinical settings marked by heightened patient distress, where temporary assistance in symptom stabilization is appropriate. Its therapeutic domain is relevant across conditions presenting with systemic or localized discomfort in the eye, including cataract extraction, intraocular lens (IOL) implantation, corneal transplantation, and glaucoma filtering procedures.

The medicine is commonly used when symptoms intensify, and short-term symptomatic assistance is needed during the procedure. This clinical scenario can benefit from support that helps ease the overall burden of symptoms. The main patient-oriented benefits are relevant in contexts marked by increased discomfort or tension, as the solution is applied to support the procedure. This product assists with maintaining the structural integrity of tissues, which may support the maintenance of a stable operative field. This supportive action may assist with general well-being during symptomatic phases.


Quick Fact: Supportive Care for Discomfort
Used in settings where short-term symptomatic assistance is needed.

Regulatory References

  1. FDA Summary of Safety and Effectiveness Data for AMVISC™

Eligibility and Restrictions for Use

Who can and cannot use Viscomet?

Viscomet (Hypromellose Ophthalmic Solution) is broadly approved for use and is primarily restricted by local ocular conditions rather than systemic health factors, according to government regulatory documents.

Absolute Contraindications

Use of Viscomet is contraindicated for patients with a known hypersensitivity or allergy to the active substance, Hypromellose, or to any of the excipients present in the formulation.

Age-Group and Systemic Eligibility

Regulatory documents confirm the established eligibility for adults, older adults, and the pediatric population, including infants and children of all ages. Furthermore, official labeling states there are no documented restrictions based on the patient's renal impairment or hepatic impairment status. Use is also anticipated to be compatible with pregnancy and lactation due to negligible systemic exposure and the inert nature of the compound.

Conditional Restrictions

A conditional restriction applies to soft contact lens wearers. Due to the presence of a preservative in the formulation, soft lenses must be removed before instillation and may only be reinserted after a specified time period.

What should I know about interactions with other medicines?

The interaction profile for Viscomet (Hypromellose) is defined by its regulatory classification as a pharmacologically inert, non-systemic Ophthalmic Lubricant. Because the product is not absorbed systemically, regulatory documents confirm the absence of classic drug-drug interactions involving plasma concentrations or metabolic pathways.

Administration-Timing Restrictions

The only officially documented interaction is a local, physicochemical effect that necessitates strict administration timing when co-administering the product with other eye medicines.

  • Topical Pharmacodynamic Interference: Viscomet's viscosity is officially documented to prolong the ocular contact time of topically applied drugs. This effect requires a timing rule to prevent physical interference with the absorption of other topical preparations.
  • Mandatory Separation: Co-administration with other topical ophthalmic medicines (e.g., eye drops and ointments) requires a separation of application time. The product must be applied at least 5 to 15 minutes after any other eye drops or ointments have been administered, as stated in official labeling.

Absence of Systemic Interactions

Official regulatory sources confirm that Hypromellose is not documented to affect or be affected by metabolic enzymes, such as the Cytochrome P450 system, nor does it alter the systemic plasma concentration (AUC or Cmax) of other medicinal products. Furthermore, no interactions with food, alcohol, or herbal products are officially cited in the regulatory documents for this topical ocular preparation.

Mechanism of Action

Viscosity Enhancement and Ocular Retention

This domain covers the drug's interaction with the pre-corneal tear film, where the high molecular weight polymer, Hypromellose, physically increases the solution's viscosity upon application. This mechanism is purely physicochemical and does not act on traditional biological targets like receptors or enzymes. The resulting physiological effect is a significantly prolonged ocular retention time, which supports the continuous surface coverage.


Mucoadhesion and Evaporation Barrier Function

This domain involves the solution’s adherence to the ocular epithelial surface and its covering glycocalyx. Through mucoadhesion, Hypromellose forms a stable, physical barrier that supplements the natural tear film. This mechanism directly opposes the physical process of evaporation, which is distinct from drugs that stimulate endogenous tear production. The primary physiological consequence is the modulation of tear film dynamics, which physically reduces the coefficient of friction during eyelid movement and assists in corneal surface water retention.

Dosage and Administration Information

Administration of Viscomet

Viscomet is an ophthalmic viscosurgical device (OVD) intended for use during specific surgical procedures involving the anterior segment of the eye. Its administration is performed exclusively by trained ophthalmic surgeons within a clinical or surgical environment.

Preparation and Handling

The substance is provided in a sterile, pre-filled syringe. Before use, the syringe should be allowed to reach room temperature to ensure appropriate viscosity and ease of flow through the cannula. The surgeon inspects the packaging to confirm sterility and the absence of particulate matter before proceeding with the assembly of the delivery system.

Application During Surgery

The material is introduced into the eye through a specialized cannula. Depending on the surgical stage, it may be used to perform the following functions:

  • Space Maintenance: The solution is injected into the anterior chamber to maintain the depth and shape of the eye during the procedure, preventing the collapse of the ocular structures.
  • Tissue Protection: It creates a protective layer over the corneal endothelium and other delicate intraocular tissues, reducing the risk of mechanical trauma from surgical instruments.
  • Pressure Management: The volume of the substance injected is carefully controlled to manage intraocular pressure and facilitate the movement of surgical tools or the insertion of an intraocular lens (IOL).

Removal Following Procedure

At the conclusion of the surgery, the substance is typically removed from the eye. This is accomplished through irrigation and aspiration (I/A). Thorough removal is necessary to minimize the risk of temporary increases in intraocular pressure post-operatively. The surgeon ensures that the anterior chamber is replaced with a suitable physiological solution to restore normal ocular balance.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Viscomet (Hypromellose)


Evidence for Viscomet as an Ocular Lubricant and Tear Substitute

Research has examined the use of Hypromellose as an ophthalmic lubricant, primarily through short-term Randomized Controlled Trials (RCTs) and systematic reviews. Studies explored patient-reported outcomes describing perceived discomfort, such as irritation and burning, as well as objective measures of tear film stability and ocular surface integrity. The findings help contextualize how symptoms evolved in the observed populations, with studies reporting patterns related to measured changes in tear film stability compared to baseline. However, the available evidence is limited, as most follow-up durations were short, generally only a few weeks.

Evidence for Viscomet as an Ophthalmic Surgical Aid

Viscomet is also available in a high-concentration viscoelastic form, which was evaluated in research for use during complex ophthalmic procedures, including cataract extraction and Intraocular Lens (IOL) implantation. Studies explored outcomes related to intraoperative stability (like maintenance of the surgical field) and post-operative measures, such as measurements of corneal endothelial cell density. Data show patterns related to the required physical stability in the anterior chamber during surgery. The outcomes observed are highly specific to the immediate procedural context and the short recovery interval.

Research Gaps and Areas of Uncertainty

The evidence highlights what is known and what remains uncertain. Long-term effects are not fully established regarding the consequences of continuous, chronic use of the lubricating preparation. Furthermore, data for certain groups remain insufficient, with limited information for pediatric patients. One key research limitation is that the comparative evidence is lacking for different concentrations and formulations of Hypromellose, and the findings for the surgical preparation are highly procedure-specific.

Key Studies & References

  1. Artificial Tears: A Systematic Review (Covers effectiveness and comparison of various lubricants including HPMC)
  2. Efficacy, Tolerability, and Comfort of 0.3% Hypromellose Eyedrops in Patients Undergoing LASIK Surgery (A randomized clinical trial protocol)
  3. Label: HYPROMELLOSE EYE DROPS 0.7% for solution - DailyMed (Authoritative information on ophthalmic lubricant use and general profile)

Frequently Asked Questions (FAQ)

Common questions about Viscomet (FAQ)


Q: Is Viscomet the same kind of medication as [Similar Drug Name]?

Official documents classify Viscomet as an ocular lubricant and tear substitute. This means it is designed to work physically on the eye's surface, using a physicochemical method (like increasing viscosity) rather than targeting biological receptors. This functional class is different from prescription drops that may contain active pharmacological ingredients.


Q: If I miss a dose of Viscomet, what is the general guidance?

Viscomet is generally administered as needed (prn) for the relief of symptoms. A general guidance based on its use is to administer the dose when remembered. Regulatory documents indicate that frequency should not exceed the maximum prescribed by a healthcare provider.


Q: Can I take Viscomet with over-the-counter pain relievers?

According to official product information, Viscomet is not absorbed systemically into the bloodstream. Due to this non-systemic action, regulatory sources confirm the absence of classic drug-drug interactions involving metabolic pathways with oral medications, including pain relievers.


Q: Is it necessary to take Viscomet with food?

Since Viscomet is an eye drop that is a pharmacologically inert substance and is not absorbed systemically, its use is not dependent on consumption of food or drink.


Q: How is Viscomet typically stored?

Official labeling states Viscomet should be stored at room temperature, typically within the range of 15°C to 30°C (59°F and 86°F). The product should be protected from freezing and kept away from direct light.


Q: Can Viscomet be used by children?

Regulatory documents confirm that the use of Viscomet is generally considered appropriate for the pediatric population of all ages. The dosage used is typically consistent with the adult regimen, and guidance for use in infants and young children is determined by the healthcare provider.


Q: Is it possible to develop a tolerance to Viscomet over time?

Viscomet is described in official documents as a pharmacologically inert substance that acts only physically on the eye's surface. Because it is not absorbed systemically, official regulatory sources do not include documentation suggesting the development of classical pharmacological tolerance over time.


Q: What is the risk category of Viscomet for use by people with liver issues?

Official regulatory documents state there are no documented restrictions or specific risk categories for Viscomet related to a patient's hepatic impairment (liver) status. This is consistent with its negligible systemic exposure.


Q: How quickly can a person expect Viscomet to start working?

Official documents describe Viscomet as providing relief upon instillation, consistent with its physical mechanism of action. This rapid onset is due to its physical lubricating action on the eye's surface.


Q: Is Viscomet meant for long-term use?

While Viscomet may be used continuously, official documents note that use for prolonged periods necessitates monitoring of ocular health by a healthcare professional.


Q: What happens if I stop taking Viscomet suddenly?

As Viscomet is a physicochemical lubricant that is not absorbed systemically, official documents do not list any specific adverse events, withdrawal symptoms, or rebound effects following its abrupt discontinuation.


Q: Are there different strengths or forms of Viscomet available?

Viscomet is available as a Sterile Ophthalmic Solution (eye drop) for general lubrication. It is also formulated in a high-concentration viscoelastic preparation used by healthcare professionals as a surgical aid during specific ophthalmic procedures. Different concentrations of the eye drop solution may be available.


Q: Does Viscomet cause weight changes?

Regulatory documents do not list weight changes as a documented side effect. This finding is consistent with the product being a non-systemic ophthalmic lubricant that does not affect metabolism or other bodily systems.


Q: What kind of monitoring is typically required while taking Viscomet?

Regulatory information indicates that monitoring of progress by a healthcare professional is necessary, particularly when Viscomet is used for prolonged periods.


Q: What is the general expectation for improvement when using Viscomet?

The product's indicated purpose is to provide ocular lubrication and stabilize the tear film. This function addresses symptoms of dryness and irritation and supports the general protection of the eye's surface.


Q: Are there specific tests I need before starting Viscomet?

Regulatory documents for the ophthalmic solution do not mandate specific pre-treatment laboratory tests or evaluations before starting use. The product's contraindication is primarily limited to known allergies to its components.


Q: Does Viscomet cause elevated [Lab Value]?

Viscomet is considered a non-systemic product, meaning it is not absorbed into the bloodstream. For this reason, its official safety profile does not include any documented systemic effects or changes to standard laboratory values.


Q: What official documents describe the proper disposal of Viscomet?

Official instructions advise that unused or expired Viscomet should not be disposed of in household waste or wastewater. The product should be discarded in accordance with local regulatory requirements for pharmaceutical waste, which is the official guidance.


Q: If I have a history of [Relevant Past Illness], can I still take Viscomet?

While Viscomet is non-systemic, regulatory documents note that patients with a history of specific ocular conditions, such as disorders of the cornea or glaucoma, may have conditional restrictions and professional monitoring may be warranted.


Q: How does Viscomet impact daily routine?

Official warnings state that Viscomet may cause a temporary blurring of vision immediately after application. Official warnings note that driving or operating machinery may be impaired until vision has fully cleared. Additionally, a waiting period is required when using other topical eye products.


Q: What happens in the body when Viscomet is absorbed?

Official regulatory documents state that Viscomet is a pharmacologically inert product that is not absorbed systemically. This means systemic exposure and metabolism are considered negligible and are not a key part of its function.

How should Viscomet be stored and disposed of?

Storage and Disposal of Viscomet (Hypromellose Ophthalmic Solution)

Viscomet must be stored at room temperature, typically at or below 25°C (77°F), and should be kept away from direct light and moisture. It is mandatory to keep the medicine out of the sight and reach of children.

Handling and Stability Rules

  • Do not freeze the solution, and keep the bottle tightly closed in its original container.
  • To prevent contamination, multi-dose solutions must be discarded after 28 days from first opening; single-dose units must be thrown away immediately after use.
  • Do not use the solution if it becomes cloudy or changes color.

Disposal Instructions

Unused or expired Viscomet should not be disposed of in wastewater or household waste. The medicine must be discarded according to local regulatory requirements or pharmacist instructions for pharmaceutical waste.

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

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