NexoBrid

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NexoBrid

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Medically reviewed

Laura Arias

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 NexoBrid

What is NexoBrid?

NexoBrid is an enzymatic debridement agent used in the treatment of deep partial-thickness and full-thickness thermal burns. It is a biological product derived from a concentrate of proteolytic enzymes enriched in bromelain, which is extracted from the stem of the pineapple plant (Ananas comosus).

Mechanism of Action

The primary function of NexoBrid is to selectively remove the non-viable burn tissue, known as eschar, without damaging the surrounding healthy dermis or viable tissue. This process is called debridement. By dissolving the damaged proteins in the burned skin, it clears the wound bed to allow for better assessment of the burn depth and facilitates subsequent healing processes or surgical interventions if necessary.

Composition

The active substance in NexoBrid is a mixture of several enzymes, mainly proteases, which are capable of breaking down the complex protein structures found in dead skin tissue. This enzymatic mixture is provided as a powder that is mixed with a sterile gel vehicle immediately before application to create a cohesive topical treatment.

Clinical Role

In the management of severe burns, removing dead tissue is a critical early step to prevent infection and promote recovery. NexoBrid offers an alternative to surgical debridement (where dead tissue is removed using a scalpel or other surgical instruments). Because the enzymatic action is targeted toward the necrotic tissue, it helps preserve more of the patient's original, healthy skin compared to traditional mechanical methods.

Regulatory References

  1. European Medicines Agency (EMA)
  2. NexoBrid EPAR - Medicine overview

What side effects are possible with NexoBrid?

Possible Side Effects and Safety Information

The safety profile of NexoBrid (anacaulase-bcdb) is based on data documented in official regulatory sources, including the FDA Prescribing Information and the European Summary of Product Characteristics (SmPC). Adverse reactions are formally classified by frequency and grouped by affected physiological systems.

Adverse Reactions and Frequencies

Adverse reactions are reported according to their incidence in clinical trials. Reactions classified as Very Common (occurring in ge 10% of patients) include Pruritus (itching) and Pyrexia (fever). Reactions classified as Common (occurring in >5% of adults) include Wound complication (such as graft failure or loss), Anemia, Vomiting, and Insomnia. These reactions are officially grouped into System-Organ Classes such as Skin and Subcutaneous Tissue Disorders and General Disorders.

Serious Safety Considerations and Restrictions

Regulatory documents highlight the potential for Serious Hypersensitivity Reactions, including Anaphylaxis, which are critical safety events. The use of this medicine is restricted in several key areas. It is contraindicated in patients with known hypersensitivity to the active substance, bromelain, pineapples, or related enzymes like papain, due to the risk of cross-sensitivity. It is also contraindicated in individuals with uncontrolled disorders of coagulation.

Furthermore, official labeling specifies that safety and effectiveness have not been established for certain wound types, such as chemical or electrical burns, and for specific anatomical locations. Caution is advised when the product is used in patients on anticoagulant therapy.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory profile for NexoBrid addresses overexposure primarily through the documentation of severe systemic risks and mandated emergency actions. Overexposure to the active ingredient, anacaulase-bcdb, is controlled by strict limits on the maximum application area, which serves as the primary regulatory constraint.

Documented Overexposure Manifestations

The most severe manifestations of systemic exposure are classified as serious or life-threatening. Regulatory documents specifically note signs of Hypersensitivity Reactions and adverse effects on the coagulation system. Clinical signs may include hypotension, tachycardia, rash, or erythema associated with hypersensitivity, as well as signs of bleeding or coagulation abnormalities.

Required Emergency Actions

The occurrence of a serious, life-threatening systemic reaction, such as anaphylaxis, requires that patients seek immediate medical attention. If a hypersensitivity reaction occurs, the regulator-mandated instruction is to remove NexoBrid (if applicable) and initiate appropriate therapy. The official labeling confirms that no specific antidote is known for overexposure, requiring clinical management to rely on supportive and symptomatic measures.

Monitoring and Population Considerations

Patients must be monitored for possible signs of coagulation abnormalities and systemic allergic reactions. The maximum treated area is strictly limited by regulatory authorities for both adults and pediatric patients; these limitations serve as the official boundary against overexposure.

Therapeutic Uses of NexoBrid

What NexoBrid Treats: Main Uses and Benefits

NexoBrid is commonly used in clinical settings that involve acute deep thermal burns, including deep partial-thickness (DPT) and full-thickness (FT) injuries, in both adult and pediatric patients. It is applied to address the core problem of the eschar (the layer of hard, non-viable tissue) that characterizes these severe wounds. This medicine is considered relevant for easing the symptoms associated with the necrotic tissue burden.


Non-Surgical and Supportive Tissue Management

The therapy supports non-surgical removal of devitalized tissue. This process is applied across domains where additional symptomatic support is needed. This contributes to easing the overall symptom load, which supports the patient during difficult episodes. This highly targeted action is relevant for managing symptom clusters that create noticeable physiological strain.


Supporting Functional Stability and Comfort

This treatment may assist with maintaining functional stability. By supporting selective tissue removal, this approach is relevant in contexts where maintaining functional stability is appropriate. This process assists with achieving a clearer assessment of wound depth. This helps improve day-to-day comfort during symptomatic periods and supports the patient during difficult episodes by easing distress.

“By supporting selective tissue removal, this treatment may assist with maintaining functional stability.”

Quick Fact: Symptom Management This medicine is relevant in contexts involving heightened systemic burden to manage the symptomatic condition characterized by the presence of non-viable tissue (eschar).

Regulatory References

  1. European Medicines Agency (EMA) medicine overview

Eligibility and Restrictions for Use

Who can and cannot use NexoBrid?

Eligibility for NexoBrid is strictly defined by regulatory criteria, based on patient factors, burn characteristics, and pre-existing conditions.


Populations Allowed and Excluded

NexoBrid is approved for use in adults and pediatric patients of all ages for deep partial-thickness and full-thickness thermal burns. However, use is subject to specific exclusions and limitations documented in official prescribing information.


Absolute Contraindications

NexoBrid must not be used in patients with a known severe hypersensitivity (allergy) to the active substance, anacaulase-bcdb (bromelain), or any component derived from the pineapple or papaya plant.

It is also contraindicated for treating chemical burns and electrical burns.


Eligibility Limitations and Restrictions

  • Burn Size (TBSA): The medicine is not recommended for the initial treatment of burns affecting more than 30% of the Total Body Surface Area (TBSA), nor for treating more than 15% TBSA in a single application session.
  • Burn Site/Conditions: Use is not established for burns on the feet of patients with diabetes mellitus or occlusive vascular disease, or for burns on the face, perineum, or genitalia.
  • Pregnancy/Lactation: Use during pregnancy is advised only if the potential benefit justifies the potential risk to the fetus, as human data are unavailable. A similar decision is required regarding breastfeeding.

What should I know about interactions with other medicines?

Interactions with other medicinal products and substances are officially documented and classified based on their potential effects, as stated in regulatory labels.

Contraindicated Substances

NexoBrid is strictly contraindicated with substances containing papain or papaya fruit. This restriction is due to the documented risk of cross-sensitivity with the active ingredient, the concentrate of proteolytic enzymes enriched in bromelain.

Interactions Affecting Coagulation and Efficacy

A pharmacodynamic interaction is formally documented with anticoagulant therapy or other drugs affecting coagulation. Co-administration requires caution because it is associated with an increased risk of bleeding or coagulopathy.

Co-application of certain topical medicinal products, such as silver sulfadiazine or povidone-iodine, is documented to reduce the activity and decrease the efficacy of the enzymatic concentrate. To prevent this functional interference, official regulatory instructions require these topical agents to be removed and the wound cleansed prior to NexoBrid application.

Systemic Potential and Unstudied Populations

The active enzyme concentrate is systemically absorbed from the burn wound area, establishing the potential for systemic drug interactions. However, official regulatory labels confirm that no clinical drug interaction studies have been conducted to document specific metabolic or transporter-mediated interactions. Due to this absence of data, careful monitoring is required for patients with renal or hepatic impairment, as information on the use in these populations is not available.

Mechanism of Action

Enzymatic Hydrolysis of Denatured Protein Substrates

This mechanism is centered on the proteolytic activity of the active enzyme complex (anacaulase-bcdb), which targets the denatured protein structures—specifically collagen and fibrin—that constitute the rigid, non-viable tissue matrix. The enzymes catalyze the hydrolysis of peptide bonds, leading to the localized solubilization of the necrotic tissue matrix, occurring due to the catalytic efficiency of the enzyme complex.


Differential Activity and Tissue Demarcation

The enzyme complex exhibits a selective mechanism with a differential activity profile against denatured proteins, resulting in a distinct demarcation from the underlying viable dermis. This action involves the molecular breakdown of the damaged proteins and is a requirement for the physical separation of the non-viable tissue from the adjacent viable tissue.


Mechanism Dependencies and Constraints

The hydrolytic process is highly dependent on local environmental conditions, requiring sufficient hydration in the wound bed to maintain optimal catalytic efficiency. As the enzyme activity is localized and subject to denaturation over time, maintaining these optimal conditions is a requirement for the proteolytic mechanism's function.

Dosage and Administration Information

NexoBrid is administered strictly via the topical route and is reserved for use by trained healthcare professionals within specialized burn centers. The medicine is supplied as a lyophilized powder and a separate gel, which are combined at the bedside immediately before use. Due to the limited stability of the enzymatic component, the final mixture must be applied to the treated area within 15 minutes of reconstitution. The standard application involves creating a layer of the prepared gel approximately 3 mm thick directly onto the eschar.

The treatment is a short-contact, single-event procedure. The enzyme preparation is required to remain on the burn for exactly four hours, after which it is mandatory for the gel and the resultant tissue to be removed. To ensure proper administration, a skin protectant ointment is applied to the surrounding viable skin, and the treated area is covered with an occlusive dressing for the duration of the contact time.

Dosing is strictly restricted based on the extent of the thermal injury, measured by Total Body Surface Area (TBSA). For adults, the initial application should not exceed 15% TBSA. A second application may be considered 24 hours later, provided the cumulative area treated does not exceed 20% TBSA. Pediatric patients have lower TBSA limits; those aged six years and older are limited to 15% TBSA, and children under six years are limited to 10% TBSA, with a second application generally not recommended for these populations.

Recent Clinical Evidence

Evidence for Non-Surgical Eschar Removal


The main evidence base for NexoBrid comes from pivotal, large-scale Randomized Controlled Trials (RCTs) conducted in adult and pediatric patients with deep thermal burns. These studies compared the enzymatic preparation against standard methods for managing burn eschar, which may involve surgery. Researchers examined critical outcomes, including the time measured for eschar removal from the wound bed and the subsequent frequency of surgical excision or skin grafting.

Findings recorded removal times and showed patterns related to a difference in the frequency of surgery between the treatment groups. These results reflect what was observed in the study populations and help contextualize recovery during the acute phase.


Long-Term Outcomes and Special Populations

Long-term follow-up studies extended to 12 and 24 months after wound closure. These studies monitored functional and cosmetic outcomes using standardized scales to track how the healed skin developed. However, the full durability or function of the skin beyond two years is not fully established.

Research on specific populations found that while dedicated studies were conducted in pediatric patients, data for the smallest age cohorts (infants) remain limited. Similarly, the sample sizes for older adults (ge 65 years) were modest, meaning data for this specific group are insufficient.


What the Research Landscape Still Shows as Uncertain

The types of evidence reviewed vary, and findings describe group patterns, not personal outcomes. Key areas where evidence remains limited include patients with extensive burns (over 30% TBSA) and burns from non-thermal sources, such as chemical or electrical injuries. Comparative evidence is lacking regarding all possible standard surgical techniques, as the standard of care can vary widely between burn centers.

Key Studies & References

  1. NexoBrid: Full Prescribing Information (U.S. Regulatory Document)

Frequently Asked Questions (FAQ)

Common questions about NexoBrid (FAQ)

Q: How quickly does NexoBrid start working on the burn area?

A: Official information indicates that the active enzyme component of NexoBrid is rapidly absorbed into the bloodstream from the burn wound after application. The median time it takes for the concentration to reach its highest level in the blood is about four hours, which corresponds with the required duration of the treatment application.

Q: What's the main benefit of using NexoBrid compared to traditional burn treatment?

A: Clinical studies reviewed by regulatory bodies showed that using NexoBrid was associated with a shorter time to remove the dead tissue (eschar) from the burn wound. Additionally, the studies indicated a lower incidence of needing surgical excision compared to patients treated with the standard of care.

Q: How does NexoBrid know which tissue to remove?

A: NexoBrid's active ingredient uses proteolytic enzymes that are designed to selectively target and break down the denatured proteins—such as collagen and fibrin—that make up the burn eschar. This mechanism allows for the removal of the non-viable tissue, as the enzymes are designed to be selective and minimize damage to the surrounding viable tissue.

Q: How long does the NexoBrid treatment process usually take?

A: The product is required to be left on the burn wound for a fixed duration of four hours to allow the enzymatic process to complete. The entire treatment process, which includes the necessary preparation, application, and subsequent removal and wound cleansing procedures, will take longer than this contact time.

Q: Will I need skin grafts even if I use NexoBrid?

A: Regulatory documents reviewing clinical trial data showed that NexoBrid use significantly reduced the incidence of surgical excision and the percentage of deep partial-thickness wound area requiring autografts compared to the standard of care. The subsequent need for skin grafting is a clinical decision made by the treatment team based on the wound's condition after eschar removal.

Q: Is it normal to have swelling or redness after NexoBrid application?

A: The official product safety information lists pruritus (itching) and pyrexia (fever) as common side effects seen in clinical trials. A rash has also been reported in some patients. Swelling is not listed among the most commonly reported adverse reactions in the regulatory documents.

Q: Is there an age limit for who can receive NexoBrid?

A: According to official product information, NexoBrid is indicated for use in all age groups, including both adults and pediatric patients from birth through 18 years old. However, there are different restrictions on the maximum burn size (Total Body Surface Area or TBSA) that can be treated at one time for younger children.

Q: Does NexoBrid interfere with pain medicines given for burns?

A: Official documents do not list specific drug interactions with general pain medications. However, regulatory warnings emphasize that the enzymatic debridement and removal processes are painful. Therefore, adequate analgesia and/or anesthesia are necessary to manage pain before, during, and after the application of NexoBrid.

Q: Does NexoBrid leave a better scar than surgery?

A: Long-term follow-up studies reviewed by regulatory agencies monitored patient outcomes using standardized scar assessment tools. These studies found that the cosmetic and functional outcomes in the NexoBrid group were generally considered non-inferior to those achieved in the standard of care (surgery) group at both 12 and 24 months post-treatment.

Q: Why do doctors choose NexoBrid over surgical debridement sometimes?

A: Regulatory summaries of clinical trials indicate that NexoBrid offers a non-surgical method to achieve rapid and effective removal of dead tissue. Clinical data showed that it achieved this with a lower incidence of needing surgical excision and with less blood loss compared to standard surgical methods.

Q: Is NexoBrid available in all hospitals that treat burns?

A: Official labeling states that NexoBrid should only be applied by trained healthcare professionals in specialist burn centers. Therefore, its use and availability are restricted to these specialized hospital settings.

Q: Can I breastfeed while being treated with NexoBrid?

A: Regulatory documents state that there is no data on whether the medicine is present in human milk or what effects it might have on a breastfed child. For this reason, regulatory bodies note that caution should be considered if the medicine is administered to a nursing woman.

Q: Why is proper wound care so important after NexoBrid treatment?

A: After the dissolved tissue is removed, the regulatory guidelines emphasize that the debrided area needs to be covered immediately with appropriate dressings or skin substitutes. This is required to prevent the wound from drying out (desiccation), which is crucial for successful healing and avoiding infection.

Q: Does NexoBrid require a special type of dressing?

A: Yes. According to official administration instructions, the treated wound must be covered with a sterile occlusive film dressing during the four-hour application time. Following the removal of the product, the area is then covered with a dressing soaked in an antibacterial solution for two hours.

Q: Can NexoBrid be used for chemical burns or electrical burns?

A: No. Official labeling clearly states that the safety and effectiveness of NexoBrid have not been established for the treatment of chemical or electrical burns. For this reason, regulatory documents state the product is contraindicated for these specific types of wounds.

Q: Does NexoBrid hurt when it's applied?

A: Regulatory warnings indicate that enzymatic debridement is a painful procedure. To manage this, official instructions require that adequate analgesia and/or anesthesia be administered to the patient both before the application and during the removal of the product.

Q: Are patients awake when NexoBrid is used?

A: The official product information specifies that the procedure is painful and requires adequate pain management, including the use of analgesia and/or anesthesia. Clinicians will determine the specific level of pain relief needed, which may involve sedation, based on the patient's condition.

Q: What does the area look like right after NexoBrid treatment?

A: Official instructions describe the necessary final step after the dissolved eschar is wiped away. The treated area is typically rubbed until the wound bed displays a pinkish surface with small bleeding points or a whitish tissue to confirm that the dead tissue has been successfully removed.

Q: What happens if NexoBrid gets on the eyes or mucous membranes?

A: While specific instructions for eye/mucous membrane contact are not explicitly detailed, the official handling guidelines state that in the event of accidental skin exposure, the product is generally advised to be rinsed off with water. This action is intended to reduce the potential for skin irritation or sensitization.

Q: What are the signs of a serious allergic reaction to NexoBrid?

A: Regulatory documents highlight the potential for serious allergic reactions, including anaphylaxis. Signs of such reactions may include a rash, widespread redness (erythema), and a sudden drop in blood pressure (hypotension) or rapid heart rate (tachycardia).

Q: Why do some people need two applications of NexoBrid?

A: For adults, the initial application is limited to a maximum of 15% of the Total Body Surface Area (TBSA). A second application may be considered by the burn team 24 hours later if the patient has additional burn wounds that need treatment, provided the total cumulative area treated does not exceed 20% TBSA.

Q: Can NexoBrid be used on parts of the body with very thin skin?

A: Regulatory documents state that the safety and effectiveness of the medicine have not been established for burns on the face, perineum, or genitalia. These areas are often complex or have very thin skin, and therefore, clinical caution is typically considered.

Q: Why is it important to treat the burn within a few days using NexoBrid?

A: Clinical studies showed that NexoBrid was able to achieve faster eschar removal compared to standard treatments. In burn care, timely removal of the eschar is generally considered critical for reducing the risk of complications like infection and for creating the best possible environment for wound healing.

Q: Can older patients handle the NexoBrid treatment well?

A: Official information indicates that clinical experience in elderly patients (age 65 years and older) is limited. However, regulatory documents specify that based on the available data, no specific dose adjustment is required for this age group.

Q: Does using NexoBrid shorten the patient's hospital stay?

A: Clinical studies reviewed by regulatory agencies demonstrated a shorter time to complete eschar removal and faster wound closure compared to the standard of care. These factors are typically associated with a reduced overall duration of acute care.

Q: Are there any food restrictions while undergoing burn treatment with NexoBrid?

A: NexoBrid is contraindicated (must not be used) in patients with a known severe allergy or hypersensitivity to the active substance, bromelain, or any components derived from the pineapple or papaya plant. The care team typically needs to be informed of all known allergies, especially those related to the product's components.

How should NexoBrid be stored and disposed of?

Storage and Disposal of NexoBrid

NexoBrid (anacaulase-bcdb) must be stored and handled according to strict regulatory requirements to maintain the stability of its enzymatic components.


Official Storage Conditions

Storage Condition Requirement
Temperature Must be refrigerated at 2 C to 8 C (36 F to 46 F).
Prohibited Environment The product must not be frozen.
Protection Store in the original carton to protect from light and keep out of the sight and reach of children.
Post-Mixing Stability The mixed gel must be applied within 15 minutes of preparation; the enzymatic activity decreases progressively thereafter.

Disposal and Handling

The product is for a single application to one patient. Any unused portions of the lyophilized powder, gel vehicle, or mixed product must be discarded. Disposal of the remaining medicinal product and waste materials must be carried out in accordance with local requirements for pharmaceutical waste, ensuring proper environmental handling.

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

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