Hialuronidasa

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Hialuronidasa

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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 Hialuronidasa

Quick Facts

Property Description
Active ingredient Hyaluronidase (Hyaluronate glycanohydrolase)
Form Solution for injection or Lyophilized powder
Pharmacological class Lytic Enzyme / Spreading Factor
General purpose Enhances the absorption and dispersion of fluids
Origin Recombinant (rHuPH20) or Biological (derived)

Hialuronidasa: Definition and Pharmacological Classification

Hialuronidasa (INN: Hyaluronidase) is a highly specific biological preparation formally classified as a lytic enzyme and often referred to as a spreading factor. The core identity of this single-ingredient product is its ability to catalyze the hydrolysis of hyaluronic acid, a large molecule that provides viscous support to the body's connective tissues. This enzyme modifies the tissue structure temporarily, which fundamentally alters the local flow of fluids. The enzyme's efficacy as a spreading agent is clinically recognized for optimizing the delivery of medications.

Composition, Forms, and Biological Origin Differentiation

The medication is formulated for parenteral administration, typically provided either as a stable solution for injection or as a sterile lyophilized powder requiring reconstitution with an aqueous solution. While historical preparations were of biological origin derived from animal sources, modern therapeutic standards favor Recombinant human hyaluronidase (rHuPH20). This modern form is synthesized via genetic engineering, ensuring a purified and highly consistent enzyme preparation. Popular brands containing this active ingredient include Hylenex (recombinant) and Hyalase (derived), often differentiating based on their specific enzyme source and purification methods.

General Purpose: Increasing Tissue Permeability

The general purpose of Hialuronidasa is to enhance the dispersion and absorption of other co-administered substances. Its unique physiological action is to temporarily increase tissue permeability by initiating the depolymerization of viscous hyaluronic acid chains. By reducing resistance within the tissue matrix, Hialuronidasa allows therapeutic fluids to spread more efficiently across the interstitial space, which is crucial for facilitating the subcutaneous delivery of high-volume fluids. In short, the medication's main function is to help other fluids or medicines spread out faster once they are injected.

Regulatory References

  1. Nivolumab and hyaluronidase-nvhy Injection: MedlinePlus Drug Information
  2. Hyaluronidase - StatPearls - NCBI Bookshelf

What side effects are possible with Hialuronidasa?

Possible side effects and safety information

Official regulatory documents classify the potential adverse effects of Hialuronidasa based on their frequency and the body system affected. This classification is vital for understanding the medicine's safety profile.


Adverse Reaction Scope

The most frequently reported adverse events are localized reactions, while severe systemic issues are classified as rare.

Classification Type of Adverse Reaction
Most Frequently Reported Local injection site reactions, including pain and erythema (redness).
Rarely Severe Anaphylactic-like reactions and Hypersensitivity reactions, which are systemic allergic responses.

The official labeling notes that adverse reactions primarily affect the General Disorders and Administration Site Conditions and Immune System Disorders system-organ classes. Other documented effects include edema (local swelling), urticaria, and angioedema (swelling beneath the skin).


Safety-Related Restrictions and Constraints

Regulatory authorities establish specific limitations on the use of Hialuronidasa:

  • Contraindications: The enzyme should not be used in individuals with a known hypersensitivity to the drug itself or any of its components.
  • Injection Site: It is restricted from injection into or around an acutely inflamed or infected area due to the risk of spreading the localized condition.
  • Co-administered Drugs: Hialuronidasa is explicitly restricted from use to enhance the absorption of dopamine or alpha agonist drugs.

Population-specific safety considerations are also noted. For neonates and premature infants, regulatory documents mandate constraints on the daily volume and rate of administration when the drug is used to facilitate subcutaneous fluid delivery. Furthermore, its co-administration is noted to potentially enhance the adverse reactions of co-administered drug products.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory documentation for Hialuronidasa (Hyaluronidase) specifies a range of clinical signs that constitute toxicity or overdose. Awareness of these documented manifestations is required to initiate the appropriate, time-sensitive emergency response.


Documented Overdose Manifestations

Feature Officially Documented Manifestations
Local and Systemic Signs Local edema, urticaria, erythema, chills, nausea, vomiting, and dizziness.
Severe Physiological Signs Tachycardia (rapid heart rate) and hypotension (low blood pressure) are documented as signs of severity.

Emergency Action and Help-Seeking Guidance

When signs of toxicity appear, government regulatory sources require immediate action. The enzyme should be discontinued immediately. Emergency medical care must be sought when any of the documented toxicity symptoms—especially the cardiovascular signs of tachycardia or hypotension—are observed. The regulatory profile confirms that management consists of initiating supportive measures immediately, as no specific pharmacological antidote for Hialuronidasa overdose is currently documented in the official prescribing information. The official documentation does not specify unique overdose considerations for pediatric or geriatric populations.

Therapeutic Uses of Hialuronidasa

Hialuronidasa is a specialized therapeutic agent primarily used to address local tissue barriers and fluid challenges, offering key supportive benefits across several medical and cosmetic domains. It is applied when supportive symptom management is appropriate to enable better fluid dynamics within the body's connective tissues.

The medication is commonly used across conditions presenting with acute episodes and situations involving systemic or localized discomfort. Specifically, it is applied in four main therapeutic areas: supporting essential fluid uptake (hypodermoclysis) and drug absorption, managing emergency dermal filler complications, addressing localized tissue injury from extravasated drugs, and supporting regional anesthesia coverage. This versatility means it plays a role in managing symptoms that create noticeable physiological strain.

“The medication is considered relevant in scenarios where the dispersion of injected substances may assist with maintaining functional stability.”

This supportive action helps patients cope more steadily with symptom fluctuations. For instance, in acute scenarios, it provides support that helps ease the overall symptom burden of drug leakage, and in procedural contexts, it assists with maintaining functional stability by supporting pain management.


Quick Fact: Relief for Localized Discomfort
Primary action: Helps address symptom clusters related to localized fluid accumulation and symptoms related to localized fluid accumulation.
Key benefit: Contributes to improved day-to-day comfort during symptomatic periods and supports patients in managing symptoms that create noticeable physiological strain.
Relevant contexts: Emergent filler management and procedural pain management.

Regulatory References

  1. NIH StatPearls overview

Eligibility and Restrictions for Use

Eligibility Map: Who can and cannot use Hialuronidasa

Eligibility Status Restriction/Exclusion Regulatory Basis (FDA/EMA)
Contraindicated Known hypersensitivity to the drug or excipients. Absolute Exclusion
Contraindicated Injection into or around an infected or acutely inflamed area or a malignancy site. Absolute Exclusion
Prohibited Use Intravenous injection; application to the cornea; reducing swelling from bites or stings. Contextual Exclusion

Special Population and Age-Related Rules

Hialuronidasa is generally established for use across all age groups (adults, children, and the elderly), but regulatory documents mandate specific limitations for certain populations:

  • Pediatric Patients: Special care must be taken to avoid over-hydration by controlling the rate and volume of fluid administered. Specific limitations apply to infants and neonates.
  • Geriatric Patients: Use is established, but special care is required to avoid over-hydration, especially if renal impairment is suspected.
  • Pregnancy and Lactation: Use during pregnancy should be avoided unless clearly needed, and caution is advised for nursing mothers as it is unknown if the drug is excreted in human milk.

These rules define the official, non-advisory constraints for the safe use of this medicine.

What should I know about interactions with other medicines?

Hialuronidasa’s official interaction profile is strictly defined by its local enzymatic action as a spreading factor, and not via interactions involving major metabolic enzymes like Cytochrome P450. Regulatory documentation organizes interactions into physicochemical incompatibilities, pharmacodynamic antagonism, and absorption enhancement, specifying the necessary constraints for co-administration of the enzyme.

Interaction Classification and Constraints

Official regulatory labeling classifies certain drug combinations with Hialuronidasa based on strict physical and pharmacological restrictions. Furosemide, Phenytoin, and Benzodiazepines must not be physically mixed with the solution prior to administration due to classified physical incompatibility. Furthermore, the use of the enzyme is formally prohibited for enhancing the dispersion or absorption of Dopamine and Alpha Agonist Drugs.

Exposure and Antagonism

Co-administration with Local Anesthetics (such as Lidocaine) is officially documented to increase the rate of systemic absorption. This pharmacokinetic interaction results in a hastened onset but a shortened duration of the anesthetic effect. Pharmacodynamic antagonism is documented with other substances, including systemic doses of Salicylates, Cortisone, ACTH, Estrogens, and Antihistamines, which may render tissue partly resistant to the enzyme’s action, potentially requiring a larger quantity of Hialuronidasa for the intended dispersal effect.

Mechanism of Action

Hialuronidasa's mechanism of action is defined by its role as a specific lytic enzyme that acts on the structural components of the connective tissue. The action is purely peripheral and local, driven by enzymatic catalysis.

Direct Enzymatic Hydrolysis of Hyaluronic Acid

Hyaluronidase functions as a Hyaluronate Glycanohydrolase that targets and cleaves the beta-1,4-glycosidic bonds within Hyaluronic Acid (HA), the high-molecular-weight polymer that forms the viscous ground substance of the Extracellular Matrix (ECM). The immediate breakdown of the large HA chains initiates depolymerization and is the foundational molecular step of its mechanism.

Modulation of Interstitial Viscosity and Permeability

Following depolymerization, the molecular breakdown of HA produces a temporary reduction in the viscosity and physical resistance of the tissue at the site of administration. This decreased resistance facilitates interstitial fluid flow, resulting in a transient increase in tissue permeability and an increase in local diffusion. This physiological change defines the enzyme's role as a biological spreading factor.

Dosage and Administration Information

Administration of Hialuronidasa

Hialuronidasa is an enzyme used to modify the permeability of connective tissue through the hydrolysis of hyaluronic acid. Its application is typically performed by healthcare professionals in clinical settings, as the method of administration depends on the specific therapeutic objective.

Methods of Application

The substance is generally administered through various types of injections. The choice of technique is determined by the underlying condition being addressed:

  • Subcutaneous or Intramuscular Injection: Often used to facilitate the absorption and dispersion of other injected drugs, such as local anesthetics or subcutaneous fluids.
  • Intervention in Extravasation: Used in cases where fluids or medications have leaked from a blood vessel into the surrounding tissue, helping to disperse the misplaced substance and reduce local tissue damage.
  • Subcutaneous Rehydration: Employed in specialized hydration techniques where intravenous access is not possible or appropriate.

Preparation and Handling

Hialuronidasa is often supplied as a lyophilized powder that requires reconstitution with a sterile solution, such as sodium chloride, before use. Once prepared, the solution should be clear and colorless. Because the enzyme is sensitive to physical conditions, it is typically prepared immediately before the procedure to ensure its biological activity is maintained.

Procedure Considerations

The administration process involves several clinical steps to ensure the correct placement of the enzyme:

  1. Site Assessment: Healthcare providers identify the specific area of tissue requiring increased permeability.
  2. Preparation of the Area: The injection site is cleaned using standard aseptic techniques.
  3. Delivery: The reconstituted solution is injected directly into the affected or target tissue area.

Following the procedure, the area may be monitored to observe the rate of fluid absorption or the resolution of the localized issue for which the enzyme was indicated.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Hialuronidasa


1. Evidence for Facilitating Fluid Administration (Hypodermoclysis)

Research has explored the use of Hialuronidasa as an aid when giving fluids under the skin (hypodermoclysis). Studies, including Randomized Controlled Trials (RCTs), have focused on populations of older adults and children experiencing dehydration. Researchers examined outcomes such as the speed of fluid absorption and the total volume delivered.

Studies reported patterns where Hialuronidasa was associated with a faster rate of fluid dispersion and absorption compared to subcutaneous administration without the enzyme. However, long-term effects are not fully established. Existing studies provide limited insight into whether the observed change in fluid absorption rate translates into a significant overall clinical outcome compared to using alternative rehydration methods. The evidence quality varies across older studies.


2. Research Exploring Dermal Filler Complication Interventions

The research exploring the enzyme’s use in addressing complications related to hyaluronic acid-based dermal fillers mainly relies on Case Reports, Case Series, and Retrospective Reviews. Only a limited number of controlled trials have been conducted. Studies examined outcomes such as the resolution of palpable filler material, changes in signs related to vascular compromise, and the appearance of aesthetic overcorrection.

Multiple case reports and series described patterns of complete or partial dissolution of the target filler material following enzyme use. The certainty remains low regarding the exact treatment protocols and dosage necessary, as the evidence base largely relies on low-level observational data and expert consensus. Sample sizes were modest, and long-term effects are not fully established.


3. Research on Use as an Adjunct to Local Anesthesia

The use of the enzyme with local anesthetics includes RCTs and Systematic Reviews, particularly for adults undergoing ophthalmic surgery. Studies explored outcomes such as the required volume of local anesthetic and the speed of onset of the numbing block.

Trials reported measurements where the use of the enzyme was associated with the use of a smaller volume of anesthetic to achieve the desired area of spread. However, the evidence exploring an impact on directly changing patient pain levels remains inconsistent and is considered to be of low certainty in some systematic reviews.

Key Studies & References

  1. Hyaluronidase - StatPearls - NCBI Bookshelf (NIH)
  2. Hypodermoclysis in dehydrated elderly patients: local effects with and without hyaluronidase (RCT)

Frequently Asked Questions (FAQ)

Common questions about Hialuronidasa (FAQ)


Q: Is Hialuronidasa the same as Hyaluronic Acid?

No, they are different substances. Hialuronidasa is classified in official documents as an enzyme (Hyaluronate Glycanohydrolase). Its fundamental purpose is to act upon and temporarily break down Hyaluronic Acid (HA), which is the large, natural molecule that gives connective tissue its viscosity.


Q: Can Hialuronidasa cause a rash or redness?

Yes, official documentation reports that localized erythema (redness) and pain at the injection site are among the most frequently reported temporary reactions. Systemic allergic reactions, which may involve a generalized rash (urticaria) or hives, have also been reported, while these systemic allergic responses have been documented as rare.


Q: Is it possible to be allergic to Hialuronidasa?

Yes, there is a possibility of an allergic response. The product information states that the drug is formally contraindicated (should not be used) in people with a known hypersensitivity or allergy to the drug or any of its ingredients. Rare but serious allergic responses, such as anaphylactic-like reactions, have been documented.


Q: What happens if I receive Hialuronidasa while taking blood thinners?

Official regulatory documents specifically note that co-administration with systemic doses of Salicylates (a class of drugs that includes some blood thinners) may interfere with the enzyme. This can make the tissue partially resistant to the enzyme’s action, potentially requiring a larger quantity of Hialuronidasa to achieve the necessary dispersal effect.


Q: Can pregnant women be given Hialuronidasa?

Regulatory information advises that use during pregnancy should be avoided unless clearly needed, as the safety of the product for human pregnancy has not been established in controlled clinical studies. Official guidance indicates that the potential benefit versus unknown risks should be considered.


Q: Can elderly patients use Hialuronidasa without special precautions?

Use in the elderly is established. However, official documents emphasize the need for special care when the enzyme is used to facilitate the administration of subcutaneous fluids. This special care is related to avoiding over-hydration, especially if a patient has or is suspected to have underlying renal impairment (kidney problems).


Q: What information is available regarding Hialuronidasa use during breastfeeding?

Official regulatory information states that caution is advised for nursing mothers. This is because it is currently unknown if the medicine passes into human milk, and therefore, the potential risks to the infant compared to the maternal benefit should be considered.


Q: What are the known severe adverse reactions to Hialuronidasa?

The most serious reactions reported, though classified as rare (less than 0.1%), involve systemic allergic responses. These reactions include severe Anaphylactic-like reactions and generalized Hypersensitivity reactions, which are recognized in the official adverse reactions summaries.


Q: How quickly does Hialuronidasa start to work?

The action of the enzyme is local. When Hialuronidasa is used as an adjunct to a local anesthetic, regulatory documents state that this co-administration may hasten the onset (speed up the start) of the anesthetic effect, as its local action initiates the temporary breakdown of tissue viscosity.


Q: How long do the effects of Hialuronidasa last?

The effect on tissue permeability is temporary, as the enzyme is rapidly broken down in the body. For instance, when it is co-administered with a local anesthetic, regulatory documents note that the enzyme's action shortens the duration of the anesthetic effect compared to when the anesthetic is used alone.


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

Official regulatory documents do not specifically list common non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen as a direct incompatibility. However, the label does note that other anti-inflammatory drugs, specifically Salicylates, may act as antagonists and reduce the enzyme's dispersal effect.


Q: What is the difference between hyaluronidase and Hialuronidasa?

The terms refer to the same active ingredient. Hyaluronidase is the recognized international non-proprietary name (INN) and chemical name for the enzyme. Hialuronidasa is simply an alternate common spelling or nomenclature used in certain regions or documents.


Q: Can people with kidney problems use Hialuronidasa?

Specific guidelines for the general population with kidney problems are not detailed in the product information. However, regulatory text does advise special care in older adults with suspected renal impairment to ensure the controlled rate and volume of fluids delivered when the drug is used as a facilitating agent.


Q: What kind of research has been done on Hialuronidasa?

Studies cited in official medical literature focus on its use for facilitating fluid administration under the skin (hypodermoclysis), as an adjunct to local anesthesia, and in specific interventions to address complications related to hyaluronic acid dermal fillers.


Q: Are there any long-term effects of using Hialuronidasa that studies have shown?

Regulatory summaries explicitly state that the long-term effects of the enzyme's use have not been fully established. Nonclinical toxicology and long-term studies to assess effects like carcinogenicity have not been performed in animals, according to available data.


Q: Does the medicine Hialuronidasa contain any animal products?

Hialuronidasa can be sourced in different ways. Modern products are commonly Recombinant human hyaluronidase (rHuPH20), which is synthetically produced. Historically, some preparations were of biological origin derived from animal sources, such as bovine (cow) or ovine (sheep) materials.


Q: Is the effect of Hialuronidasa permanent or temporary?

The effect is consistently described as temporary in the official mechanism of action. The enzyme only causes a transient (short-lived) reduction in the tissue's viscosity by initiating the breakdown of hyaluronic acid.


Q: Can Hialuronidasa affect my blood pressure?

Changes in blood pressure are not listed among the most common side effects. However, severe and rare systemic allergic reactions, such as anaphylactic-like reactions, may include symptoms like a rapid pulse and a drop in blood pressure (hypotension).


Q: Is there a link between Hialuronidasa and inflammation?

Yes, there is a link described in the safety information. The enzyme is prohibited from being injected into or around an acutely inflamed or infected area due to the risk of inadvertently spreading the localized condition. Local inflammation (edema) at the injection site is also a reported reaction.


Q: What should I do if I experience unexpected effects after Hialuronidasa?

Regulatory information indicates that patients should report any unexpected or severe reactions, particularly signs of an allergic response such as hives, trouble breathing, or swelling, immediately to their healthcare professional. Discontinuation of the medicine is noted to be required if sensitization occurs.

How should Hialuronidasa be stored and disposed of?

How to Store and Dispose of Hyaluronidase

The storage of hyaluronidase is strictly defined by regulatory labeling to maintain the enzyme's activity. Unopened vials must be stored under refrigeration, typically between 2°C and 8°C (36°F and 46°F), and must be protected from light. It is explicitly required that the product not be frozen.

Stability and Child Safety

Once the product is prepared (admixed) for administration, it must be used within a limited time frame, such as 6 hours, and stored at controlled room temperature (15 C to 25 C) during this period. For safety, the medication must be kept out of reach of children.

Disposal Instructions

Unused portions must be discarded according to local pharmaceutical waste regulations. Disposal of used needles and syringes (sharps) should follow established safety guidelines, usually by placing them in an approved sharps disposal container.

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

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