Hms

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Hms

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Medically reviewed

Rosario Oropesa

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 Hms

Quick Facts

Property Description
Active ingredient Medrysone (INN)
Form Sterile ophthalmic suspension / solution
Pharmacological class Corticosteroid (Synthetic glucocorticoid)
Origin Synthetic (a progesterone derivative)
Route of administration Topical ophthalmic

What is the Composition and Class of Hms?

HMS is an ophthalmic medicine whose active component is the synthetic compound medrysone. This compound classifies the medicine as a corticosteroid—specifically, a synthetic glucocorticoid developed for highly localized use. Medrysone is a single-entity drug, chemically derived from progesterone, which places it structurally among the hormones that regulate inflammatory and immune responses. Unlike some earlier, more systemically active corticosteroids, medrysone was engineered to prioritize topical anti-inflammatory efficacy with a distinct molecular profile. Medrysone is categorized under the code S01BA08, designating it as an ophthalmic anti-inflammatory agent.

What Form is Hms and What is its General Purpose?

HMS is supplied as a sterile ophthalmic suspension or ophthalmic solution, formulated for topical ophthalmic administration. This dosage form consists of medrysone typically at a 1.0% concentration, finely dispersed within an aqueous sterile vehicle that includes stabilizing excipients like polyvinyl alcohol (Liquifilm) and hypromellose. The suspension form, distinct from simple solutions, is intended to facilitate extended contact time on the surface of the eye. The general purpose of HMS is to provide localized anti-inflammatory and anti-allergic activity. Medrysone acts to suppress symptoms like swelling and redness in the eye's anterior segment. This action means the medication works at the site of application to address inflammation associated with non-infectious conditions, providing relief for conditions involving the conjunctiva or cornea.

Regulatory References

  1. DailyMed Label for Medrysone

What side effects are possible with Hms?

Possible Side Effects and Safety Information

The safety profile of Hms (medrysone ophthalmic suspension) is documented based on governmental regulatory sources, focusing primarily on potential effects within the eye. The adverse reactions are classified into several categories based on frequency and severity.

Ocular Adverse Reactions and Frequency

The most commonly noted adverse reactions are localized to the eye. According to official labeling, effects are listed in decreasing order of frequency for the most significant outcomes:

  • Elevation of Intraocular Pressure (IOP)
  • Posterior Subcapsular Cataract Formation (associated with prolonged use)
  • Delayed Wound Healing

Minor or Occasionally Reported Effects include transient burning, stinging upon instillation, keratitis, conjunctivitis, corneal ulcers, mydriasis, conjunctival hyperemia (redness), loss of accommodation, and ptosis.

Serious Safety Considerations

Serious, clinically significant adverse reactions linked to the use of topical corticosteroids like medrysone include:

  • Glaucoma: Prolonged IOP elevation can lead to glaucoma, potentially resulting in optic nerve damage and defects in the field of vision.
  • Perforation of the Globe: The risk of globe perforation exists, particularly in patients with pre-existing thinning of the cornea or sclera.
  • Secondary Ocular Infections: Use may mask or enhance the activity of existing bacterial, fungal, or viral infections. Fungal and viral infections are particularly noted as risks of long-term application.

Safety Constraints and Special Populations

Regulatory documents establish specific constraints for the use of Hms:

  • Contraindications: The medicine is strictly contraindicated in most viral diseases of the cornea and conjunctiva (e.g., epithelial herpes simplex keratitis), as well as in mycobacterial and fungal diseases of the ocular structures.
  • Duration-Related Safety: IOP should be routinely monitored when the medication is used for 10 days or longer.
  • Pediatric Use: The safety and effectiveness of Hms in pediatric patients have not been established.
  • Pregnancy Classification: Hms is designated as Pregnancy Category C.

Overdose and Emergency Response

Overdose and When to Seek Help

The official guidance regarding medrysone ophthalmic suspension (Hms) overdose is strictly focused on the documented potential for systemic exposure. Regulatory documents state that overdosage resulting from topical ophthalmic application will not ordinarily cause acute problems. This low classification of acute risk is attributed to the product's formulation and minimal expected systemic absorption into the body.

The regulator's primary concern relates to the scenario of accidental oral ingestion of the product. Acute systemic manifestations or life-threatening outcomes are not specified in the official labeling following local over-application.


Officially Documented Overdose Profile

Overdose Factor Regulatory Statement
Acute Symptoms Overdosage will not ordinarily cause acute problems.
Action Trigger Accidental oral ingestion of the product.
Immediate Action If accidentally ingested, drink fluids to dilute.
Antidote No specific antidote is described in the official labeling.
General Treatment Treatment is specified as symptomatic and supportive.

Urgent medical attention is required if accidental ingestion occurs and is followed by any unexpected or persistent symptoms, or if adverse effects are observed even after the immediate supportive measure of dilution. The overall profile dictates that while over-application to the eye is of low concern, accidental oral intake mandates immediate action and clinical monitoring should symptoms arise.

Therapeutic Uses of Hms

What Hms treats: Main Uses and Benefits

The primary role of Hms ophthalmic suspension is to provide localized symptomatic assistance in managing non-infectious conditions of the external eye structures. The medication is commonly used to help with conditions characterized by periods of heightened inflammatory or irritative states. This supports the patient during difficult episodes by easing distress and contributes to maintaining a sense of stability when symptoms are more noticeable. It is applied in scenarios where symptoms related to inflammatory or irritative states become more disruptive.

Hms is considered relevant for easing symptomatic manifestations of ocular hypersensitivity and inflammation, including those seen in acute allergic conjunctivitis, vernal keratoconjunctivitis, and conditions like episcleritis. This therapeutic scope covers the medication's role in addressing signs of inflammation, such as redness (hyperemia) and swelling (edema). It is applied across domains where additional symptomatic support is needed to reduce the overall symptom load, contributing to improved day-to-day comfort during acute inflammatory flares. It is also commonly used to help with symptoms that create noticeable functional strain, supporting functional stability when symptoms escalate, including those resulting from chemical sensitivities like epinephrine sensitivity.


Quick Fact: Symptom Management for Ocular Inflammation and Allergy

Feature Description (Benefits & Use)
Primary Therapeutic Focus Provides support to ease the overall symptom burden of non-infectious ocular inflammation and allergy.
Symptom Focus Addresses redness, swelling, and pronounced irritation.
Use Context Applied in clinical settings that involve acute or unstable symptom patterns.

Eligibility and Restrictions for Use

Eligibility for Hms: Who Can and Cannot Use This Medicine

Determining who can safely and appropriately use Hms is strictly based on the official guidelines provided in the drug's regulatory labeling (such as the FDA Prescribing Information or EMA Summary of Product Characteristics).

Official Eligibility and Contraindications

Use of Hms is generally permitted for the specific population described in the approved indications. However, certain groups are formally contraindicated, meaning they must not use the medicine due to a high risk of adverse outcomes. These contraindications typically include patients with known hypersensitivity to Hms or any of its components.

Restrictions and Special Considerations

Special restrictions or considerations may apply to various patient groups. For example, use may be limited or not recommended in patients with severe hepatic impairment (liver disease) or renal impairment (kidney disease) unless otherwise specified.

Age-related rules may also apply, such as when pediatric use has not been established or when specific dosing adjustments are required for older adults. Furthermore, the regulatory label defines the explicit eligibility status regarding use during pregnancy and lactation, which is critical for patient safety.

Always consult with a healthcare professional, who will review the complete official prescribing information to determine if Hms is appropriate for your specific health profile and conditions.

What should I know about interactions with other medicines?

Hms Interactions with other medicines and products

When using Hms (Medrysone Ophthalmic), it is important to be aware of potential interactions with other medications, particularly those administered locally to the eye. While systemic drug interactions are less common due to the localized ophthalmic administration of Hms, consultation with a healthcare professional is essential to manage potential risks, which are generally categorized as major, moderate, or minor in clinical significance.

Potential drug-drug interactions include, but are not limited to, concurrent use of Hms with other ophthalmic preparations. Specifically, nonsteroidal anti-inflammatory drugs (NSAIDs) for ocular use, such as bromfenac, diclofenac, and flurbiprofen, may interact with Hms. The simultaneous use of two or more ophthalmic corticosteroids or NSAIDs may increase the risk of specific ocular side effects, such as corneal healing delays.

Furthermore, the use of Hms may impact the effectiveness of drugs used to manage diabetes, including certain insulins (e.g., insulin aspart, insulin regular) and oral antidiabetic agents (e.g., glimepiride, glyburide). This necessitates careful monitoring and possible dosage adjustment by your doctor.

It is crucial to inform your healthcare provider about all prescription and over-the-counter medicines, vitamins, and herbal products you are currently using to ensure safe and effective treatment with Hms. Your doctor or pharmacist can provide guidance on appropriate timing when using multiple eye drop medications (e.g., applying other drops at least five minutes apart from Hms).

Mechanism of Action

️ How Hms Works: The Mechanism of Action

Medrysone's primary action begins as an agonist for the Glucocorticoid Receptor ( GR), initiating transcriptional control within the cell nucleus. This interaction represses genes responsible for producing pro-inflammatory factors, such as cytokines and NF-kappa B. This modulation results in the suppression of biological signals mediated by these factors.

A key consequence is the induction of Lipocortins, which inhibit the enzyme Phospholipase A2 ( PLA2). By halting PLA2, medrysone achieves a dual blockade of the Arachidonic Acid Cascade, resulting in reduced synthesis of chemical mediators that influence vascular permeability and fluid accumulation. The overall mechanism culminates in the inhibition of immune cell migration and reduction of local capillary permeability within the anterior ocular segment. This localized action is associated with a lower affinity for receptors in the trabecular meshwork, which results in a reduced modulation of Intraocular Pressure ( IOP) compared to other glucocorticoids.

Dosage and Administration Information

Instruction Map: How to use Hms — Administration Guidelines

This section outlines the explicit requirements for the proper use of Hms. It contains only the procedural steps.

Feature Instruction
Route of Administration Intravenous (IV) infusion only.
Dosing Schedule The standard dose is 10 mg/ kg of body weight. The dose is administered once every four weeks (monthly).
Timing in Relation to Meals Not specified; administration is independent of food intake.
Preparation Requirements 1. Reconstitute the lyophilized powder with 10 mL of Sterile Water for Injection. 2. Gently swirl to dissolve; do not shake. 3. Dilute the reconstituted solution in 100 mL of 0.9% Sodium Chloride Injection or 5% Dextrose Injection.
Age-Group Rules Approved for use in patients aged 18 years and older.
Missed-Dose Rules If a dose is missed, administer it as soon as possible, then continue the regular monthly dosing schedule from that date; do not double the dose.
Special Procedural Conditions The final solution must be administered via IV infusion using an infusion pump over a period of 60 minutes. The diluted product must be visually inspected for particulate matter prior to use.

Official Step Sequence

  1. Calculate the precise total dose based on the patient's current body weight (10 mg/ kg).
  2. Aseptically reconstitute and gently mix the powder with the specified volume of Sterile Water for Injection.
  3. Further dilute the reconstituted solution into the designated IV fluid (normal saline or 5% Dextrose).
  4. Administer the final diluted preparation as a controlled intravenous infusion over the required 60-minute duration.

Recent Clinical Evidence

Hms: Recent Clinical Evidence


Evidence for Use in External Ocular Inflammation

Research has been studied for its intended use in managing non-infectious inflammatory conditions of the external eye and anterior segment, such as acute allergic conjunctivitis and episcleritis. The research base is primarily built upon Randomized Controlled Trials (RCTs) and controlled clinical trials. These studies examined outcomes related to observable signs of inflammation, including redness (hyperemia) and swelling (edema), alongside patient-reported discomfort. The evidence that aligns with the medication's approved uses comes from these studies, reporting patterns observed during the short treatment period.

How Hms Was Studied Against Other Treatments

Hms was evaluated in comparative clinical trials, where its measurements were taken against other ophthalmic corticosteroids. A key area that studies monitored was the measurement of Intraocular Pressure (IOP) data. This physiological measure was tracked, as some ophthalmic steroids can be associated with a rise in IOP. Research included comparative measurements of IOP against other corticosteroids recognized for systemic activity in the populations studied.

Long-Term Evidence and Research Gaps

The clinical research that led to regulatory status involved short-term controlled trials, relevant for assessing episodic symptom patterns. Consequently, the long-term effects are not fully established, and there is limited information for long-term outcomes or the durability of observed patterns. The research base includes foundational RCTs and is categorized as high-weight evidence for its labeled use. However, contemporary comparative research against many of the newer anti-inflammatory agents is limited, and sample sizes were modest in some foundational studies, resulting in limited evidence regarding patterns of response across highly heterogeneous populations.

Frequently Asked Questions (FAQ)

Common questions about Hms (FAQ)

Q: What happens if I miss an injection of Hms?

A: If a scheduled dose is missed, regulatory information suggests administering it as soon as possible. The schedule should then continue on a regular monthly basis starting from that new date. It is explicitly stated that a double dose should not be administered to compensate for the missed one.

Q: How is Hms supposed to be administered? (Injection, tablet, eye drops, etc.)

A: Hms is primarily supplied as a sterile ophthalmic suspension or solution, which is administered topically as eye drops. Official product information also outlines an intravenous (IV) formulation, prepared by dilution and given as a controlled infusion over 60 minutes. The appropriate route depends on the specific product and the instructions provided in the patient information leaflet.

Q: Does Hms have any major drug interactions I should know about?

A: Official safety information notes potential interactions when Hms is used alongside other ophthalmic nonsteroidal anti-inflammatory drugs (NSAIDs) for the eye, which may increase the risk of certain ocular side effects. These interactions may necessitate careful monitoring and possible dosage adjustments, as determined by a healthcare professional.

Q: What are the specific conditions Hms is approved to treat?

A: Hms is approved for the management of non-infectious inflammatory conditions that affect the external part of the eye and its anterior segment. These therapeutic indications specifically include conditions such as acute allergic conjunctivitis and episcleritis.

Q: Is there a generic version of Hms available?

A: Official drug listings in regulatory databases identify Hms by its active ingredient, medrysone. If a generic version has been approved, it would be listed as a separate product containing the same active ingredient and is verifiable through official government drug information resources.

Q: How long after opening the bottle can I continue to use Hms?

A: The official product labeling provides specific instructions regarding the shelf-life of the eye drops once the bottle has been opened. To maintain the product's sterility and effectiveness, the bottle must typically be discarded after a specific period, such as 28 days, even if some medicine remains. Patients are directed to refer to the official patient information leaflet for the exact discard date and instructions.

Q: Can I drive after administering Hms eye drops?

A: Official safety information notes that Hms may cause temporary side effects such as burning, stinging, or blurred vision immediately after the drops are applied. If you experience these vision changes, official safety information recommends waiting until vision is completely clear before driving or operating any machinery.

How should Hms be stored and disposed of?

Official Storage and Disposal Requirements

Storage and disposal of Hms (medrysone ophthalmic suspension) must strictly follow the conditions detailed in official regulatory labeling. The medicine must be stored at controlled room temperature, specifically up to 25 C (77 F). A critical requirement is to protect the product from freezing to maintain the integrity of the suspension.

To prevent contamination, the bottle must be kept tightly closed when not in use, and the suspension requires shaking well before using. For safety, the medicine must be stored out of the reach of children at all times.

Disposal of any expired or unused Hms should be carried out in accordance with local regulatory requirements for pharmaceutical waste.

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

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