Latest Published Research Articles

Honey Compounds Exhibit Antibacterial Effects Against Aggregatibacter actinomycetemcomitans JP2 (2025)

Honey Compounds Exhibit Antibacterial Effects Against Aggregatibacter actinomycetemcomitans JP2 – Hbibi, A., Ezzahi, A., Ozturk, F., Cremers, N. A. J., Kasouati, J., Moussaif, A., Johansson, A., Zouhdi, M., Touré, B., & Maroui, I. (2025)

Background: Aggregatibacter actinomycetemcomitans JP2 genotype is a virulent pathogen linked to severe periodontitis and systemic diseases. Honey and royal jelly (RJ) have demonstrated bioactive properties against this microorganism. This study aims to assess the bioactive properties of honeys and RJ against this key periodontal pathogen and to preliminarily identify key compounds with antibacterial potential. Methods: The antibacterial activity of honeys and commercial products (manuka, L-Mesitran® as a medical-grade honey-based formulation (MGHF), and Honix® RJ) against A. actinomycetemcomitans JP2 was evaluated using the agar well diffusion method and microdilution assays. Extensive physicochemical characterization (e.g., hydrogen peroxide level, total phenolic content, and total flavonoid content) was conducted to correlate the bioactive compounds with the antimicrobial activity.

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Uncovering the Advantages of Foam Dressings with Active Ingredients (2025)

Uncovering the Advantages of Foam Dressings with Active Ingredients – Chrysostomou D., Papanikolaou G. E., Boshoff L., Mbele T., Pokorná A., Holubová A., Wagener F. A. D. T. G., Cremers N. A. J. (2025)

Background/Objectives: Foam dressings are designed for their ability to manage exudate and are selected to optimize wound repair. Various foam dressings are available, ranging from basic polyurethane to more sophisticated options, incorporating active components to combat infections or foster healing. This study investigates the requirements for the most suitable foam dressing through a combination of field research, laboratory testing, and clinical evaluation. Methods: We tested 17 foam dressings commonly used by wound care professionals while attending an international conference. An effective foam dressing should absorb wound fluid for several days, as wound care professionals value absorption and retention capacity, often favoring less frequent changing dressings, preferably twice a week or even weekly. Results: The foam dressings tested can absorb the expected amount of exudate typically produced by different wound types. There is some variability in retention capacity and product prices, resulting in differences in cost-effectiveness among products. In addition, some dressings are enriched with active ingredients that can accelerate healing through their antimicrobial and anti-inflammatory properties, such as foam dressings infused with silver or honey. A honey-based foam dressing was evaluated in a clinical survey involving eight wound care specialists, and four clinical cases with varying wound pathologies were discussed in more detail to highlight its key properties. Conclusions: Ideally, a foam dressing should have adequate absorption and retention capacities, effectively resolve and prevent infections, protect against external trauma, ensure optimal patient comfort without damaging newly formed granulation tissue, accelerate wound healing processes, and reduce wound care time (e.g., remaining in place for 7 days). Together, these factors make honey- or silver-loaded foam dressings more cost-effective than plain dressings due to their antimicrobial activities and ability to nourish tissues.

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Medical-grade honey: its definition and refined standards (2025)

Medical-grade honey: its definition and refined standards – Peters L. J. F., Majtan J., Mossialos D., Szweda P., Mateescu C., Ozturk F., Wagener F. A. D. T. G., Cremers N. A. J. (2025)

The surge in the use of honey in modern medicine, driven by concerns over escalating antibiotic resistance, places an unprecedented emphasis on the need for medically safe and effective honey. In response, the term ‘medical-grade honey’ (MGH) emerged, accompanied by stringent criteria. However, the evolving landscape of honey authenticity challenges and new medical device regulations demand a comprehensive revision of MGH criteria and a refined definition. This article provides a clear definition of MGH and refines its standards. MGH must be: organically produced; undergo gamma sterilisation; adhere to clinical safety benchmarks; meet production standards; and meet specific physicochemical criteria, affirming its suitability for medical use. Furthermore, the authors advocate for proven biological activity in MGH, including antimicrobial and antioxidant properties, vital for medical efficacy. This paper also sheds light on significant regulatory shifts introduced by the European Union’s Medical Device Regulation, enhancing device safety while demanding increased investment in terms of cost and effort. In summary, the presented refined guidelines ensure secure, effective honey use in medical contexts, reaffirming MGH’s role in modern healthcare.

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Published Research Articles

Treating Traumatic Skin Injuries in Geriatric Patients with Medical Grade Honey (2025)

Use of Supplemented Medical-Grade Honey to Treat Traumatic Skin Injuries in Geriatric Patients in a Home-Care Setting – Papanikolaou G. E, Kegels P., Gousios G., Kegels F., Peters L., Cremers N. (2025)

Traumatic skin injuries (TSI) are more common to geriatric population due to reduced skin elasticity and increased gait instability. This is also associated with an altered wound-healing mechanism thus requires a cost-efficient and effective treatment. Therefore, the aim of the present study is to highlight the efficacy of medical-grade honey (MGH) supplemented with vitamins C and E for the conservative treatment of TSI in a home-care setting. The present multicenter retrospective case series study included 10 geriatric patients (four men and six women) who sustained TSI of various etiologies. The median age of the patients was 82.5 years (min-max: 65-90 years). Cardiovascular disease was the most frequent concomitant illness (50% of the patients). Previous treatments with povidone-iodine, alginate gel, or simple gauze for 5.5 days (median, min-max: 0-21 days) were ineffective. Treatment with a variety of supplemented MGH products, including ointment, wound gel, gauze, and foam, was commenced upon the initial patients’ examination. By using MGH products, we achieved effective reduction of the inflammation, removal of the necrotic tissue, and formation of healthy granulation and epithelial tissue. MGH eliminated clinical signs of infection after 7.5 days (median, min-max: 5-35 days). Wounds were completely healed after 21 days (median, min-max: 14-56 days), without evidence of recurrence or complications, and with good functional and aesthetic outcomes. Supplemented MGH-based products present high clinical efficacy for the treatment of TSI in older adults in a home-care setting, while demonstrating a safe and easy-to-use profile. Therefore, they can be proposed as an alternative or complementary therapeutic approach to conventional TSI therapies.

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Medical-Grade Honey as a Potential New Therapy for Bacterial Vaginosis - Lardenoije, C. M., van Riel, S. J., Peters, L. J., Wassen, M. M., & Cremers, N. A. (2024)

The prevalence of bacterial vaginosis (BV) among women of reproductive age is 29%. BV arises from a vaginal imbalance marked by reduced levels of lactic acid-producing lactobacilli and an overgrowth of pathogenic anaerobes. The multifactorial nature of BV’s pathogenesis complicates its treatment. Current antibiotic therapy exhibits a recurrence rate of about 60% within a year. Recurrence can be caused by antibiotic treatment failure (e.g., due to antimicrobial resistance), the persistence of residual infections (e.g., due to biofilm formation), and re-infection. Because of the high recurrence rates, alternative therapies are required. Medical-grade honey (MGH), known for its antimicrobial and wound healing properties in wound care, emerges as a potential novel therapy for BV. MGH exerts broad-spectrum antimicrobial activity, employing multiple mechanisms to eliminate the risk of resistance. For example, the low pH of MGH and the production of hydrogen peroxide benefit the microbiota and helps restore the natural vaginal balance. This is supported by in vitro studies demonstrating that MGH has an antibacterial effect on several pathogenic bacteria involved in the pathophysiology of BV, while lactobacilli and the vaginal microenvironment can be positively affected. In contrast to antibiotics, MGH exerts anti-biofilm activity, affects the microbiome as pre- and probiotic, and modulates the vaginal microenvironment through its anti-inflammatory, anti-oxidative, physicochemical, and immunomodulatory properties. 

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Comparing the antibacterial and healing properties of medical-grade honey and silver-based wound care products in burns - Boekema, B. K., Chrysostomou, D., Ciprandi, G., Elgersma, A., Vlig, M., Pokorná, A. & Cremers, N. A. (2024).

Burns are a major global healthcare concern, often complicated by the presence of bacteria such as Pseudomonas aeruginosa in the wounds. Silver-based dressings are commonly used in the treatment of burns but can cause skin irritation and delay healing time. Medical-grade honey (MGH) provides an interesting alternative. This study investigated the antimicrobial effects and possible cytotoxicity of L-Mesitran Soft (MGH-gel) and its individual components, Medihoney (Manuka), Flammazine (silver sulphadiazine), and silver nitrate (AgNO3) in an ex vivo human burn wound model. Bacterial survival and wound healing parameters, including re-epithelialization and keratinocyte proliferation were assessed. L-Mesitran, Flammazine, and AgNO3 reduced P. aeruginosa numbers below detection levels. L-Mesitran Soft exhibited a significantly stronger antimicrobial effect compared to Medihoney. The individual components of L-Mesitran contributed significantly to its antibacterial efficacy, thus suggesting synergistic activities. Moreover, L-Mesitran, Flammazine, and AgNO3 slightly inhibited re-epithelialization while Medihoney treatment resulted in a complete lack of re-epithelialization and keratinocyte proliferation. Furthermore, clinical cases illustrated the effectiveness of MGH therapy in infected burns. Overall, L-Mesitran Soft had similar effects as silver-based products on bacterial load and epidermal regeneration, but outperformed Medihoney. Therefore, supplemented MGH could be used as an effective alternative to silver-based dressings for P. aeruginosa-infected burns.

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Evaluation of L-Mesitran® dressings in the treatment of minor burns and scalds at a paediatric emergency department - Boggust, A. (2013)

Minor burns and scalds are common, painful injuries among children. In this evaluation, the author sought to establish if L-Mesitran® dressings (Aspen Medical Europe Ltd) – a range of honey enriched advanced wound dressings – provided positive patient experiences and outcomes in the management of minor burns and scalds in a paediatric population. L-Mesitran Hydro and Border were found to reduce erythema and pain. Feedback from clinicians, parents, and children was positive overall.

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Efficacy of honey gel in the treatment of chronic lower leg ulcers: A prospective study - Tellechea, O., Tellechea, A., Teixeira, V., & Ribeiro, F. (2013)

Chronic leg ulcers are a common medical problem among elderly patients and have a dramatic impact on quality of life as a result of pain, disability, and social isolation. Regardless of their cause, chronic leg ulcers remain difficult to treat. In recent years, there has been increasing interest in the use of honey as a therapeutic agent. Objective: To evaluate the efficacy of honeybased dressings in the treatment of chronic leg ulcers. Methods: Ten patients with chronic (mean duration 3.3 years) leg ulcers who had received non-honey based treatments with no improvement were included in this study. A honey gel dressing was applied twice a week as the only treatment. Results: Seven patients experienced complete healing of their leg ulcers. The remaining three patients showed a significant reduction in wound size, which was achieved in a mean time of 101 days (range 28-174 days). Conclusion: Honey-based dressings appear to be an efficient and easy-to-use treatment for leg ulcers.

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A comparison of the antimicrobial activity of three honey-plus products and an antimicrobial silver product - Westgate, S. J., & Cutting, K. F. (2013)

To demonstrate that L-Mesitran honey exhibits antimicrobial activity against Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, and Klebsiella pneumoniae, two experiments will be conducted. Additionally, the antimicrobial activity of the honey products will be compared to that of the silver product.

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Salvage of an infected titanium mesh in a large incisional ventral hernia using medicinal honey and vacuum-assisted closure: a case report and literature review - Chatzoulis, G., Chatzoulis, K., Spyridopoulos, P., Pappas, P., & Ploumis, A. (2012)

The overall reported percentage of mesh infections is 1.3%. Infections after incisional ventral hernia repair depend on many factors. Salvaging an infected mesh should be the priority, because serious complications are reported following mesh removal. In this case report, a methicillin-resistant Staphylococcus aureus (MRSA)-infected titanium mesh was salvaged by a novel technique, not requiring removal. The combination of vacuum-assisted closure (VAC™ therapy) of the wound and medical honey (L-Mesitran™) proved to be successful in leaving the mesh in situ. We report the successful management of this infected titanium mesh and review the literature regarding the possible pathogenetic mechanisms and treatment options

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Honey-based therapy for paediatric burns and dermal trauma compared to standard hospital protocol - Thomas, M., Hamdan, M., Hailes, S., & Walker, M. (2011)

Aims: To compare honey-based ointments and dressings for the treatment of paediatric partial-thickness burns and skin lesions with results from cases treated with conventional methods. Methods: Eight children (eight months-13 years) were included in the study when admitted to the emergency room (ER). Five had partial-thickness burns (2-35% total body surface area [TBSA]). The three others had necrotic ulcers, circular skin lesions and deep cervical trauma. After stabilising the patients in the ER, honey-based products were applied. Parents were given instructions on how to apply the honey ointment and dressings at home. Patients were followed up weekly on an out-patient basis. Similar cases treated with povidone iodine were collated from hospital archives for comparison. Results: All honey cases had complete epithelialisation by the end of the second week, without any adverse effects. The povidone iodine group needed on average three weeks for epithelialisation and had prolonged hospitalisation. The home care by the parents provided stress-free healing for both children and parents. Conclusions: The honey-based therapy indicates a fast (19 days vs 25-31 days), cost-effective and patient-friendlier treatment method compared to povidone iodine. Conflict-of-interest: None.

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Properties of honey: its mode of action and clinical outcomes - Haynes, J. S., & Callaghan, R. (2011)

This article outlines the key actions of honey when used as a treatment for wounds and examines the evidence base for its efficacy and impact on clinical outcomes. It also provides a guide to the assessment of wounds in order to identify infection, to ensure that antimicrobial dressings such as honey are used appropriately. Finally, the Mesitran range of dressings (Aspen, Redditch) is described and individual case reports presented which demonstrate the use of these products in clinical practice.

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An in vitro evaluation of the cell toxicity of honey and silver dressings - Du Toit, D. F., & Page, B. J. (2009)

To establish whether honey and silver-impregnated dressings used by wound-healing practitioners are cytotoxic in vitro to human skin keratinocytes and dermal fibroblasts. Human keratinocyte and fibroblast tissue cultures were established in vitro. Untreated cultures served as controls (group I). Small dressing implants of monofloral, medicinal honey (L-Mesitran) (group 2) and nanocrystalline silver (Acticoat) (group 3) were placed in test wells and co-cultured with each of the two cell lines. Morphological changes, including cell toxicity, were assessed using inverted microscopy, trypan blue staining and the Rosdy and Clauss cell toxicity scoring system. Untreated cultures consisting of both keratinocytes and fibroblasts (group 1) were established in 90% of all cases. In group 2, cultures with honey-impregnated implants, cell proliferation remained present at two and four months. Cell viability remained intact and cell toxicity was not evident at four months after continuous tissue culture. In group 3, marked toxicity was observed with high non-viability staining and cell-scoring counts compared with groups 1 and 2 (p<0.05). This demonstrates that the silver interfered with epidermal cell proliferation and migration, implying that it contains cytotoxic material. The honey-based product showed excellent cytocompatibility with tissue cell cultures compared with the silver dressing, which demonstrated consistent culture and cell toxicity. Further studies are needed to assess if these comparative in-vitro findings should influence a clinician’s choice of wound dressing.

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Honey in treatment of skin wounds - Overgaauw, Paul & Kirpensteijn, J. (2005)

This paper reviews the current knowledge about the use of honey in the treatment of skin wounds. Most experience has been gained in human medicine, but first reports of its use in animals are available. Honey has, after application to wounds, an antibacterial effect against several bacteria and shows reduced oedema and discharge. Moreover, it helps in generating granulation and epithelial tissue and has an odour neutralizing effect. The need to use sterilized honey products free from pesticide and antibiotic residues is explained.

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Evaluation of Infected and Non-infected Wounds Healing Activity of Eriosema robustum Hydroethanolic Leaves Extract Ointments in Streptozotocin Induced Diabetic Rats - Tsaffo, G. M., Tagne, R. S., Ekom, S. E., Noubom, M., Djenguemtar, J., Kamsu, G. T., & Gatsing, D. (2024)

Untreated diabetic wounds provide an optimal environment for bacterial growth, which, over time, can develop resistance to common antibiotics and ultimately result in amputation. Therefore, it is necessary to search for new sources of antimicrobial molecules with wound healing activity owing to the presence of different secondary metabolites in medicinal plants.

Aims: This study was to evaluate the in vivo antibacterial and diabetic wound healing capabilities of 70° hydroethanolic extract of Eriosema robustum leaves on non-infected and infected diabetic wound.

Methodology: To do this, obese albino Wistar male rats (200–280 g) were divided into eleven groups and were made diabetic by intraperitoneal injection with a low dose of streptozotocin at 45 mg/kg of body weight. An excision wound with a surface area of 314 mm2 was created on the dorsal area of each animal, except in the uninjured diabetic group (UDG). The 70° hydroethanolic extract was used to prepare 1%, 5%, and 10% ointments, with L-Mesitran serving as the reference ointment. Healing potential was assessed by measuring wound contraction rates and determining serum and tissue hydroxyproline, serum lactate deydrogenase (LDH) and total protein levels (TP). The antibacterial power evaluated in vivo of Eriosema robustum leaves was also assessed by culturing the skin after healing.

Results: The results demonstrated a significantly faster healing rate in the non-infected groups (5%,10% and L-Mesitran) compared to the infected groups. The levels of tissue hydroxyproline and total proteins were significantly (p < 0.05) elevated in all treated groups compared to infected and negative controls, unlike serum hydroxyproline levels. LDH levels were significantly (p < 0.05) elevated in both negative control group compared to the treated groups. The culture of different skin samples on previously injured areas on the 20th day of treatment showed no growth of S. aureus on completely healed areas and a low rate in the groups treated during the healing process.

Conclusion: 70° Hydroethanolic leaves extract of Eriosema robustum possess in vivo
antibacterial activities and diabetic wound healing potential.

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Medical grade honey: Hope for wounded white rhinos - Marais, H. J., Glyphis, Z. G., & Cremers, N. A. (2021)

South Africa is home to some of the world’s most endangered wildlife, with the White rhinoceros (Cerathotherium simum) among its most threatened species due to its highly sought-after horn. Since the reproduction number is below the mortality rate, there is a decrease in rhinos year over year, urgently requiring changes and saving the survivors. In this study, the efficacy of medical-grade honey (MGH) for wound care in rhinos was investigated.

We presented a case series of seven rhinos with wounds of different etiologies, including gunshots and poaching. Four wounds were around the horns and three on the limbs. It was a challenge to take care and follow-up the wounds of these wild animals in their natural habitat. A well-balanced decision between the need of treatment and risk of immobilization is constantly evaluated. In the presented cases, MGH proved a novel tool with minimal intervention and maximal effectiveness. With the severity of the wounds taken into consideration, there was a rapid healing in all cases, while infection resolved when present. MGH creates a moist and anti-inflammatory wound environment, while promoting almost all aspects in the wound healing processes, such as autolytic debridement, angiogenesis and re-epithelialization. The efficacy of MGH has constantly been confirmed in other cases and literature as well. MGH forms a potent therapy for treating wounded rhinos, independent of the severity of the wound. The strong antimicrobial and healing properties make it an easy and versatile product that can be used in all kinds of wounds.

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Observational study of the effect of L-Mesitran® medical honey on wound healing in cats - Lukanc, B., Potokar, T., & Erjavec, V. (2018)

The aim of this study was to prove the beneficial effect of medical honey on wound healing and its antimicrobial activity in the treatment of wounds. The research included 14 animals—6 dogs and 8 cats—with a total of 22 wounds healing by second intention.

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Efficacy of medical grade honey in the management of canine otitis externa–a pilot study - Maruhashi, E., Braz, B. S., Nunes, T., Pomba, C., Belas, A., Duarte‐Correia, J. H., & Lourenço, A. M. (2016)

The high prevalence of antimicrobial resistance in otic pathogens has created a need for alternative therapies for otitis externa (OE). Evidence suggests that medical-grade honey (MGH) may be effective against drug-resistant pathogens. In this study, MGH promoted rapid clinical progress, with 70% of dogs achieving clinical cure between days 7 and 14, and over 90% by Day 21. Clinical scores and owner-assessed pruritus significantly decreased during the trial (P < 0.001 and P < 0.05, respectively). In vitro assays showed MGH’s biocidal activity against all bacterial isolates, including meticillin-resistant Staphylococcus pseudintermedius (MRSP) and other drug-resistant bacteria. Medical-grade honey was successful in both clinical and laboratory settings, demonstrating its potential as an alternative treatment for canine OE.

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Management of an extensive partial and full thickness skin burn in a dog with the aid of medical honey - Maravelis, G., Voutsinou, A., Tsampa, N., & Papazoglou, L. (2015)

A 9-year-old male mixed-breed dog was admitted for the management of a partial and full-thickness thermal burn covering 45% of his body, including the thorax, abdomen, medial thigh, and caudal elbow. Medical honey (L-Mesitran® soft) was applied daily to the burn area and dressed with absorbent pads, resulting in complete healing by contraction and epithelialization 35 days after admission. Medical honey may be an effective alternative for treating extensive skin burns.

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Honey promotes angiogeneic activity in the rat aortic ring assay - Rossiter, K., Cooper, Alan, Voegeli, D. and Lwaleed, B. (2010)

Honey’s most attractive medicinal feature is perhaps its antimicrobial activity, which is likely free from bacterial resistance. However, other properties of honey are also important, at least in terms of the impact they may have on wound management. We believe that this study increases knowledge of the range of effects that honey can exert in a wound healing context, through indicating a stimulatory effect on angiogenesis. The extent to which this occurs deserves further investigation.

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Honing in de wondzorg: mythe of wetenschap? Deel 2: klinische gevallen bij de hond - H. de Rooster, J. Declercq (2008)

Honey is believed to have several positive effects on wound healing. In this case report the clinical outcome of the use of honey dressings is described in several clinical cases of dogs with skin wounds. The findings confirm that wounds treated with honey heal quickly, that bacterial contamination is well controlled, debridement is effective and that the dressings are well tolerated in all patients.

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