Anacaulase

Anacaulase Overview

Anacaulase is a specialized topical prescription medication utilized within the Dermatology clinic for the enzymatic debridement of severe thermal burn wounds. Derived from pineapple stem extract, it consists of a mixture of proteolytic enzymes designed to dissolve non-viable burn tissue while preserving surrounding healthy skin.

What Is Anacaulase & How Does It Work?

Anacaulase is a biological mixture of cysteine endopeptidases and proteolytic enzymes extracted from pineapple plant stems (Ananas comosus). Functioning as a specialized topical debriding agent, it selectively breaks down non-viable protein structures within burn eschar without damaging adjacent living tissue.

At the physiological level, the active enzymes target and dissolve degraded extracellular matrix components and necrotic proteins in deep partial-thickness and full-thickness burn wounds. By removing dead tissue non-surgically, it eliminates the need for extensive surgical excision in many patients, reducing associated blood loss, physical trauma, and the immediate need for autologous skin grafting.

Is Anacaulase FDA Approved?

Anacaulase is fully approved by the Food and Drug Administration. It received FDA approval in December 2022 under the brand name NexoBrid for non-surgical eschar removal in burn care.

What Is Anacaulase Used For?

• Used within the Dermatology and specialized burn care departments for eschar removal in adult and pediatric patients with deep partial-thickness or full-thickness thermal burns.
• Administered as a topical enzymatic alternative to surgical excision for clearing necrotic tissue from burn beds.
• Prescribed to prepare clean wound beds for subsequent spontaneous healing, topical antibacterial coverage, or skin grafting.

Before Taking Anacaulase: Contraindications & Precautions

Healthcare providers must thoroughly evaluate a patient’s allergy profile and wound characteristics before applying this biological enzyme mixture. Because it is derived from plant proteins and affects tissue proteins, specific precautions must be observed.

Who Should Not Take Anacaulase?

• Patients with a known hypersensitivity to anacaulase-bcdb, bromelain, pineapples, or any component of the formulation.
• Individuals with a known hypersensitivity to papayas or papain due to the high risk of cross-sensitivity reactions.

Anacaulase, Pregnancy & Fertility

• Human data regarding the use of topical anacaulase during pregnancy are limited. Because systemic absorption following a single topical application to burn wounds is minimal, it should be used during pregnancy only if the potential benefit justifies potential risks.
• It is unknown whether anacaulase components pass into human breast milk. Clinical discretion is advised when treating nursing mothers.
• Animal reproduction studies have not demonstrated direct reproductive toxicity associated with topical application.

Tell Your Doctor Before Taking Anacaulase

• Inform your medical team if you have uncontrolled blood coagulation disorders or are taking anticoagulant/antiplatelet medications.
• Disclose if the burn wound involves facial features, genitalia, perineum, or circumferential areas, as safety in these specific locations has not been established.
• Report any pre-existing cardiopulmonary disease or significant inhalation injury.

Anacaulase: Dosage & Administration

Anacaulase is supplied as a kit containing a lyophilized powder vial and a gel vehicle jar. It must be prepared and applied exclusively by trained healthcare professionals in a monitored clinical setting.

Standard Anacaulase Dosing

• For adult patients, a 3 mm thick layer of reconstituted gel is applied to the burn wound area (up to 15% body surface area) in a single 4-hour application. A second application may be considered 24 hours later if eschar removal remains incomplete.
• For pediatric patients 6 years of age and older, a 3 mm thick layer is applied to an area up to 15% body surface area for 4 hours; a second application is not recommended.
• For pediatric patients under 6 years of age, a 3 mm thick layer is applied to an area up to 10% body surface area for 4 hours; a second application is not recommended.

How Anacaulase Is Administered

• Adequate analgesia or anesthesia must be administered at least 15 minutes prior to wound preparation and maintained throughout the procedure.
• The burn wound must be thoroughly cleaned, cleared of blister debris and topical agents, and moistened with sterile 0.9% sodium chloride prior to gel application.
• Protect surrounding healthy skin with an ointment barrier, apply the mixed gel within 15 minutes of preparation, cover with a sterile occlusive film dressing, and wipe away the gel along with dissolved eschar after 4 hours.

Anacaulase: Clinical Efficacy & Research

Clinical trials evaluating Anacaulase demonstrate significant efficacy in achieving rapid, non-surgical eschar removal in deep burn injuries. In Phase 3 clinical studies involving patients with deep partial-thickness and full-thickness burns, a single 4-hour application of anacaulase achieved complete eschar removal in over 75% of treated wounds compared to vehicle control groups. Furthermore, research showed that patients treated with anacaulase experienced a significantly lower incidence of surgical excision and reduced total blood loss compared to standard surgical debridement protocols, while maintaining comparable long-term wound closure and cosmetic outcomes.

Anacaulase: Side Effects & Safety Profile

While effective for enzymatic debridement, application of proteolytic enzymes can produce localized wound reactions and systemic allergic risks.

Anacaulase Common Side Effects

• Localized wound itchiness (pruritus) at or surrounding the burn site.
• Fever (pyrexia) during or shortly after the treatment period.
• Localized wound complications, such as transient wound pain or localized swelling.
• Temporary nausea or vomiting in pediatric and adult populations.

Serious Anacaulase Adverse Events

• Severe systemic hypersensitivity reactions, including anaphylaxis, hives, and respiratory distress.
• Coagulopathy or increased bleeding risk in patients with underlying bleeding disorders or those on anticoagulant therapy.
• Secondary wound infection if proper post-debridement aseptic technique is not maintained.

Managing Anacaulase Side Effects

If severe allergic signs appear during application, remove the gel immediately and initiate emergency anti-allergic therapy. Post-debridement wound itchiness and fever can be managed with standard antihistamines and antipyretics under medical supervision.

Anacaulase: Interactions & What to Avoid

Because anacaulase acts locally on protein matrix structures, systemic drug-drug interactions are limited, though topical and hematological considerations apply.

Anacaulase Interactions

• Anticoagulants and Antiplatelet Drugs: Concurrent use with medications affecting coagulation (such as heparin, warfarin, or NSAIDs) requires caution due to potential increased risk of localized bleeding.
• Topical Antibacterial Agents: Heavy residual topical silver or chemical antibacterial agents on the wound bed must be thoroughly washed off prior to application, as they may impair enzymatic activity.

Anacaulase Food & Alcohol

• Dietary Effects: Food and oral beverage intake do not alter the topical activity or biological absorption of anacaulase.
• Alcohol Considerations: Alcohol consumption does not directly interact with topical anacaulase, though systemic alcohol use is restricted in burn unit settings.

Anacaulase: Missed Dose, Overdose & Storage

Because anacaulase is administered as a single-use clinical procedure by healthcare professionals, standard self-dosing protocols do not apply.

Missed Dose of Anacaulase

Not applicable. Application timing and procedures are strictly scheduled and performed by healthcare personnel within a burn center or hospital setting.

Anacaulase Overdose & Emergency

Applying excessive thickness or leaving the gel on for longer than recommended can increase localized tissue irritation or bleeding risk. In the event of prolonged contact, scrape off the gel and wash the wound bed thoroughly with sterile saline.

How to Store Anacaulase

The product kit must be stored refrigerated between 2°C and 8°C (36°F to 46°F) in its original carton to protect from light. Do not freeze. Once the powder and gel are mixed, the gel must be applied within 15 minutes or discarded.

Anacaulase: Patient Management & Monitoring

Clinical management requires specialized pre-treatment preparation, pain control, and ongoing wound site evaluation.

Tests Before Starting Anacaulase

• Careful clinical measurement and mapping of total body surface area (BSA) affected by deep partial-thickness or full-thickness thermal burn.
• Baseline coagulation status evaluation (PT, aPTT, platelet counts) in patients with known bleeding risks or anticoagulant use.
• Thorough allergy screening for pineapple, papaya, bromelain, or papain sensitivities.

Monitoring During Anacaulase Treatment

• Continuous monitoring of vital signs and airway status for signs of systemic hypersensitivity during gel application.
• Assessment of pain scores before, during, and after the 4-hour treatment period to maintain adequate analgesia.
• Visual inspection of the wound bed following gel removal to confirm complete eschar clearance and verify healthy bleeding tissue.

Anacaulase Do’s and Don’ts

• Do ensure adequate analgesia or regional anesthesia is established at least 15 minutes prior to wound preparation.
• Do apply an protective ointment barrier around surrounding healthy skin before applying the gel.
• Don’t apply the gel to chemical burns, electrical burns, or burns involving the face, genitalia, or perineum.
• Don’t reuse reconstituted gel that has exceeded the 15-minute post-mixing window.

Frequently Asked Questions

References

• U.S. FDA – NexoBrid (anacaulase-bcdb) prescribing information
• U.S. FDA Drugs@FDA – Anacaulase approval history
• European Medicines Agency (EMA) – NexoBrid Assessment Report and Burn Care Protocols

Legal Disclaimer

The information provided is for educational and informational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider at Liv Hospital or your local clinic before starting or stopping any medication.