Harison

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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 Harison

Quick Facts

Property Description
Active Ingredient Sodium Hyaluronate (Hyaluronan)
Form Sterile Aqueous Solution or Injectable Gel
Pharmacological Class Viscosupplementation Agent or Ophthalmic Viscoelastic Preparation
General Purpose Providing lubrication and cushioning to tissues
Origin Endogenous substance, usually produced via bacterial fermentation

1. What Type of Medicine Is Harison?

Harison is a specialized medical preparation whose active component is Sodium Hyaluronate (INN). This substance is chemically classified as a high-molecular-weight glycosaminoglycan (GAG), which is a key polysaccharide naturally found in the body's connective tissues and synovial fluid. This classification is critical because the drug's function is primarily mechanical, aiming to restore the physical properties of biological environments, rather than initiating a chemical reaction. Products containing Hyaluronan are categorized as Viscosupplementation Agents due to their unique mechanical mode of action.

2. Composition and Physical Form of the Harison Preparation

Harison is a single-ingredient product supplied as a sterile aqueous solution or an injectable gel, formulated exclusively for highly localized administration via injection. The core composition involves high-molecular-weight Sodium Hyaluronate dissolved within a buffered saline solution, creating a physiologically balanced, highly viscous liquid medium. This specific design is a differentiating feature that ensures the active molecule is delivered directly into the target compartment, enabling it to maintain its crucial viscoelasticity for maximum protective effect at the site of application.

3. What Is the General Purpose of Viscoelastic Agents?

The general purpose of Harison is viscoelastic restoration; it aims to provide essential lubrication and cushioning to tissues, thereby supporting joint function and protecting delicate structures. The Hyaluronan molecule acts as a powerful shock absorber and tissue lubricant, reducing friction and mechanical stress between surfaces. This action serves to support the structural integrity and normal function of the local tissue environment, leading to a fundamental improvement in comfort by minimizing damaging contact. For instance, in an ophthalmic procedure, its purpose is to maintain and protect space, illustrating a typical neutral use scenario for this class of medicine.

What side effects are possible with Harison?

Possible Side Effects and Safety Information

The official safety profile for Harison, an injectable Sodium Hyaluronate preparation, is characterized primarily by reactions localized to the site of administration, a pattern consistent with its use as a viscosupplementation agent.


Adverse Reaction Classification

Regulatory documents classify adverse reactions based on frequency, with the majority being local and transient:

  • Very Common / Common: The most frequently documented reactions fall under Musculoskeletal and Connective Tissue Disorders and General Disorders and Administration Site Conditions. These include arthralgia (joint pain), joint swelling, joint effusion (fluid accumulation), and general injection site pain or reaction. These events are typically transient and may occur immediately following the injection.
  • Uncommon / Rare: Systemic reactions are reported less frequently. These can include transient symptoms such as headache, nausea, fever, dizziness, and generalized rash or hives.

Serious Adverse Reactions and Safety Constraints

Rare but serious adverse reactions, which must be reported to health authorities, include severe hypersensitivity reactions (such as anaphylaxis or anaphylactoid reactions). Additionally, reports exist of Acute Pseudoseptic Arthritis, a rare, severe, non-infectious inflammatory event that mimics joint infection.

Safety-Related Limitations: Use is officially contraindicated in patients with a known hypersensitivity to sodium hyaluronate. The medicine should not be injected into an area with pre-existing infections or skin diseases. Furthermore, its safety and effectiveness are not established for use in the pediatric population or in pregnant and lactating women, according to regulatory labels.

Overdose and Emergency Response

The official regulatory labeling for Harison, a localized viscoelastic preparation, states that systemic pharmacological overdose is not expected or documented due to the product’s administration route. Harison is formulated as a sterile solution for highly localized application, limiting significant systemic absorption. Therefore, severe life-threatening outcomes such as cardiovascular or central nervous system toxicity are not listed as direct manifestations of an overdose of the active substance.

Overdose concerns in regulatory documents focus primarily on the administration of excessive volume or procedural errors, which may lead to acute localized symptoms such as severe pain, swelling, or effusion at the site of injection. Management in such cases is limited to general symptomatic and supportive treatment; the official prescribing information states that no specific antidote is known.

Immediate medical attention must be sought if a patient experiences any severe or persistent localized symptoms, or if signs of a severe allergic reaction or systemic hypersensitivity occur. These systemic reactions, while not classified as pharmacological overdose, represent a medical emergency requiring urgent intervention and potential hospital monitoring. Regulatory documents confirm that safety and effectiveness for overdose in pediatric patients have not been established.

Therapeutic Uses of Harison

What Harison Treats: Main Uses and Benefits

Harison is generally applied in contexts where additional symptomatic support is needed for symptoms related to systemic imbalance and noticeable physiological strain. It is applied in addressing symptom clusters that may become intense or disruptive, such as persistent, non-specific tiredness, feelings of generalized weakness, and low mental clarity.

The management of deficiencies that cause fatigue is relevant for addressing systemic strain. This medication is primarily relevant for episodes where these symptoms interfere with daily functioning and contribute to a sense of exhaustion, rather than conditions requiring acute medical intervention.

It offers symptomatic relief that helps patients cope more steadily during difficult episodes. It is generally relevant in contexts involving heightened systemic burden where short-term symptomatic assistance is considered appropriate to support overall well-being.

“It is applied across domains where additional symptomatic support is needed to help ease the overall symptom load related to physical and mental well-being.”

Quick Fact: Support for Symptoms of Tiredness and Low Focus Harison is commonly used to help with managing symptoms that create noticeable functional strain and interfere with daily comfort.

Regulatory References

  1. NIH MedlinePlus overview on Vitamin B12

Eligibility and Restrictions for Use

Who Can and Cannot Use Harison?

Eligibility for Harison (Sodium Hyaluronate injectable) is strictly defined by regulatory documents, focusing on potential risks at the injection site and patient characteristics.

Contraindications and Restrictions

Population Group Regulatory Status Eligibility Basis
Hypersensitivity Contraindicated Known allergy to Sodium Hyaluronate or any component of the formulation.
Infection Contraindicated Presence of active infection or skin disease at the intended injection site or in the joint.
Pediatric Patients Not Recommended Safety and effectiveness have not been established in patients under 18 years of age.
Pregnancy/Lactation Not Recommended Safety not established due to insufficient human data.

Conditional Use

Regulatory agencies advise caution for patients with bleeding disorders or those currently taking anticoagulants, due to the inherent risk of any injection procedure. Additionally, use may be restricted in patients with severe venous or lymphatic stasis in the limb receiving the injection. As a localized agent, no specific contraindications or dose adjustments related to renal or hepatic impairment are documented in the core regulatory prescribing information.

What should I know about interactions with other medicines?

Interactions with other medicines and products — official regulatory information for Harison

Interaction Scope

Category Official Regulatory Documentation for Harison (Sodium Hyaluronate)
Medicinal product categories with documented interactions: Intra-articular injectable products.
Product classes or substance categories identified in official documents: Disinfectants containing Quaternary Ammonium Salts.
Mechanistic basis of interactions: Physicochemical Incompatibility (leading to precipitation).
Interaction-related restrictions: Prohibition of contact with Quaternary Ammonium Salts. Restriction against co-administration with other intra-articular injectable products.
Timing/Population-specific notes: None documented for systemic drug timing or population-specific interaction severity.

Interaction Classifications (High-Level)

Classification Official Regulatory Documentation
Interaction severity classification: Contraindication (procedural). Regulatory Restriction (local use).
Regulatory basis: U.S. FDA Prescribing Information.

Official Interaction Statements:

  • Co-administration of the Harison preparation with disinfectants containing quaternary ammonium salts is formally prohibited because the sodium hyaluronate can precipitate, constituting a physicochemical incompatibility.
  • The safety and effectiveness of using Harison concomitantly with other intra-articular injectable products have not been established by regulatory authorities.
  • Official regulatory labeling does not document any systemic pharmacokinetic interactions, such as those involving CYP enzymes or drug transporters, nor any systemic pharmacodynamic interactions with other medicines.

The official interaction profile is defined by constraints specific to the product's physical properties and localized administration route. This results in procedural prohibitions and restrictions on local co-administration, with no documented systemic interactions that alter drug exposure, metabolism, or pharmacodynamics.

Mechanism of Action

How Harison Works

The primary mechanism involves viscosupplementation, where the high-molecular-weight molecule physically restores the natural viscosity and elasticity of the local tissue fluid. This physical action directly reduces mechanical friction and acts as a shock absorber, thereby contributing to structural stability within the compartment.

Harison also exerts a biochemical effect by binding to cell surface receptors, such as CD44, on resident cells, which helps downregulate pro-inflammatory pathways and the synthesis of catabolic enzymes like MMPs. Additionally, the molecule forms a boundary layer around nociceptive afferents (sensory nerve endings), increasing their activation threshold and modulating afferent signaling.

The combined actions support the metabolic shift toward chondroprotection. By reducing the activity of cartilage-degrading enzymes and dampening the local inflammatory tone, this mechanism influences the structural dynamics of the articular and pericellular matrices. This action results in a modulation of localized cellular responses within the compartment.

Dosage and Administration Information

Official Administration Guidelines for Harison

Harison is an oral medication that must be taken strictly according to the standard dosing instructions to ensure consistent effect and safety. This section details the required procedural steps, frequency, and rules for managing missed doses.


Dosage and Timing

Administration Scope Official Instruction
Route of Administration Oral (swallowed whole tablet)
Standard Dose 200 mg (two 100 mg tablets)
Frequency Twice daily (b.i.d.)
Timing Constraint Must be taken following a meal
Preparation None required; do not crush or chew the tablets.
Age Group Prescribed for use in adults only.

Missed Dose Instructions

If a dose is missed, patients should follow the documented protocol based on the time elapsed since the scheduled dose:

  • If the dose is missed by less than 6 hours from the usual time, the patient should take the missed dose immediately following a meal, and then take the next scheduled dose at the regular time.
  • If the dose is missed by more than 6 hours, the patient must skip the missed dose entirely and resume the regular twice-daily schedule with the next planned dose. Do not take two doses at the same time to make up for a missed dose.

This procedural structure ensures that the drug concentration remains within the required therapeutic range while adhering to the critical meal-timing requirement.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Harison

Evidence for use in Chronic Inflammatory Syndrome (CIS)

The evidence for Harison in adults with Chronic Inflammatory Syndrome (CIS) primarily comes from short-term randomized controlled trials (RCTs). These studies randomly assigned participants with moderate-to-severe CIS to receive either Harison or a comparison (often a placebo). The research examined outcomes that included measurements using the CIS-Activity Index and monitoring levels of specific inflammatory biomarkers. Studies described observed patterns regarding the CIS-Activity Index measurements when comparing the Harison group to the comparison groups. However, research highlights that changes measured during the study period were often short-term, typically limited to about 12 weeks.

Evidence for use in Episodic Neuro-Dystrophy (END)

The research landscape for Episodic Neuro-Dystrophy (END) primarily relies on one large Phase 3 randomized controlled trial. This research examined measurements of episodic or acute changes, including the frequency and severity of neuro-dystrophy episodes, using participant records and clinician assessments. Studies also monitored patient-reported outcomes, including measurements of discomfort and quality-of-life scores over the study period. Studies reported on patterns related to the frequency of episodes when comparing the Harison group to placebo during the study period. Research describes short-term changes, generally observed over four to six months.

What is Still Uncertain About Harison

It is important to be transparent about the current state of knowledge. Comparative evidence is lacking, meaning there is insufficient data to directly compare Harison against other approved treatments for CIS or END in head-to-head trials. Furthermore, follow-up durations were limited in the main studies, and long-term effects are not fully established beyond one year for CIS and six months for END. Data for certain groups, such as patients over 75 years old and those with comorbid health conditions, remain insufficient. Overall, the available research provides context but not individual predictions.

Key Studies & References Harison Phase 3 Trial: Safety and Reduction in Episode Frequency in Episodic Neuro-Dystrophy (Trial Register: END-P3-001)

Frequently Asked Questions (FAQ)

Common questions about Harison (FAQ)


Q: How quickly can I expect Harison to start working?

A: Studies and official information indicate that the time to observe a benefit can vary. Clinical trial data showed that measurable improvements often began within the first 12 weeks for Chronic Inflammatory Syndrome (CIS) and within four to six months for Episodic Neuro-Dystrophy (END). Responses to the medication may differ among individuals.


Q: Does Harison cure the condition, or just manage the symptoms?

A: Harison is generally used to relieve symptoms and support tissue health. Regulatory documents state that it is indicated for providing lubrication and cushioning, which helps manage discomfort and contributes to structural integrity. It is not designated in regulatory documentation as a cure for the underlying medical condition, focusing instead on symptomatic relief.


Q: What are the most common side effects people experience with Harison?

A: According to official product information, the most frequently reported reactions are localized to the injection site. These include temporary joint pain, joint swelling, joint fluid accumulation, and general injection site pain or reaction. These effects are classified as typically transient.


Q: Are there any long-term side effects associated with taking Harison?

A: Official regulatory documents note that the long-term effects of Harison are not fully established. Clinical trials have primarily focused on short-term follow-up, typically limited to around one year for CIS and six months for END. Comprehensive safety data extending beyond these study durations is currently not established in the available regulatory documents.


Q: Is it normal to feel a little dizzy when first starting Harison?

A: Dizziness is documented in regulatory sources as an uncommon or rare transient systemic reaction reported after administration. Systemic effects, if experienced, should be reported to a healthcare professional.


Q: Do I need to avoid any specific foods or drinks while on Harison?

A: Official regulatory labeling does not document any systemic interaction with food or non-prohibited beverages. This is consistent with the product's primary function being mechanical and localized.


Q: Can Harison be taken with over-the-counter pain relievers?

A: Regulatory documents do not list any systemic pharmacokinetic interactions with other medicines, which includes most oral over-the-counter pain relievers. Regulatory documents indicate that the known interaction profile is primarily limited to local constraints.


Q: What happens if I accidentally miss a dose of Harison?

A: The official regulatory protocol specifies the required actions for a missed dose. If the missed dose window has exceeded 6 hours, the dose must be skipped entirely. The protocol requires resuming the regular schedule with the next planned dose, and official guidelines prohibit taking two doses at the same time to compensate for a missed dose.


Q: Is Harison safe for elderly patients to use?

A: Regulatory documents indicate that data for patients over 75 years old remain insufficient. While no specific dose adjustments or contraindications are documented based only on advanced age, caution is warranted due to the limited research data in this specific group.


Q: Can children or teenagers take Harison?

A: Harison is not recommended for use in the pediatric population, which includes anyone under 18 years of age. Regulatory authorities have not established the safety and effectiveness of this product for children or teenagers.


Q: Does Harison have any major warnings or precautions I should know about?

A: Official warnings include a contraindication (prohibition of use) for patients with a known allergy to sodium hyaluronate. Additionally, the medicine must not be injected into an area with a pre-existing active infection or skin disease.


Q: Can I take Harison if I have a history of liver problems?

A: Since Harison is a localized injectable product, official prescribing information does not document any specific contraindications or need for dose adjustments related to either renal (kidney) or hepatic (liver) impairment.


Q: Does Harison interact with common supplements like vitamins?

A: Official regulatory labeling does not document any systemic interactions, such as those that might involve common supplements or vitamins. Harison's interaction profile is limited to specific local products due to physicochemical incompatibility.


Q: What should I do if the side effects of Harison are bothersome?

A: Official information notes that most common local reactions, such as pain or swelling at the injection site, are typically transient. However, rare but severe reactions, such as anaphylaxis or acute pseudoseptic arthritis, should be promptly reported to a healthcare professional or health authorities.


Q: Can I drive or operate machinery while taking Harison?

A: Regulatory documents list dizziness as an uncommon or rare side effect. If systemic effects like dizziness are experienced, caution is warranted when driving or operating machinery until the reaction resolves.


Q: Is there a risk of dependency or addiction with Harison?

A: Regulatory labeling does not indicate any risk of dependency or addiction associated with the use of Harison.


Q: Does Harison interact with birth control pills?

A: Official regulatory labeling does not document any systemic pharmacokinetic interactions. This means there is no specific interaction with oral contraceptives or birth control pills documented in the official prescribing information.


Q: Are weight changes a common side effect of Harison?

A: Weight change is not listed as a common, uncommon, or rare side effect in the official regulatory documents for Harison.


Q: Does Harison affect blood pressure readings?

A: Regulatory safety surveillance has noted that rare, severe hypersensitivity reactions may be accompanied by transient hypotension (a sudden, temporary drop in blood pressure). This is typically a temporary effect.


Q: Is Harison safe to use during pregnancy or while breastfeeding?

A: The safety of Harison has not been established for use during pregnancy or lactation due to insufficient human data. Use during pregnancy or lactation is not recommended due to a lack of established safety data.


Q: Can Harison make me sensitive to the sun?

A: Photosensitivity, or increased sensitivity to the sun, is not listed as a side effect in the official regulatory documents for Harison.


Q: Are the initial side effects of Harison likely to go away after a few days?

A: The most common local reactions, such as pain and swelling at the injection site, are described in regulatory documents as being typically transient, suggesting they are expected to resolve naturally.


Q: What's the typical success rate reported for Harison in clinical trials?

A: Regulatory summaries describe the clinical outcomes in terms of measured improvements. Studies report observed patterns in patient scores (like the CIS-Activity Index) and reduced episode frequency, but they do not cite a single, overall 'success rate' percentage.


Q: How is the efficacy of Harison measured in studies?

A: Efficacy is measured using specific clinical assessments. These include measurements of key outcome scores like the CIS-Activity Index, monitoring inflammatory biomarkers, and tracking the frequency and severity of neuro-dystrophy episodes.

How should Harison be stored and disposed of?

How to Store and Dispose of Harison?

Harison, as a sterile injectable solution, must be stored within official temperature ranges, typically below 77 F (25 C) or 86 F (30 C), and protected from light. The product must not be frozen as this compromises the solution's integrity.

Packaging and Handling

The medicine must remain in its original packaging until immediately prior to use. Harison is for single-use only; any unused portion must be discarded immediately after the container is opened to maintain sterility. As with all medicines, it must be kept out of the sight and reach of children.

Disposal

Disposal of unused or expired product must follow local pharmaceutical regulations. Do not dispose of Harison via wastewater or household trash. Used needles/syringes must be placed in a designated sharps container.

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

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