Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Leptospermum scoparium, commonly known as manuka, has a historical reputation in traditional Maori and Australian Aboriginal medicine for treating wounds and skin lesions. More recently, scientific studies have provided some validation for its use, particularly in the form of manuka honey, which is derived from the nectar of this plant. Manuka honey exhibits broad-spectrum antimicrobial properties, attributed to its unique non-peroxide activity largely due to methylglyoxal content. Multiple in vitro and in vivo studies have demonstrated the efficacy of manuka honey in inhibiting the growth of pathogenic bacteria, including antibiotic-resistant strains such as Staphylococcus aureus and Pseudomonas aeruginosa, both common in wound infections. Clinical trials and case reports suggest that manuka honey can promote wound healing, reduce inflammation, and facilitate tissue regeneration in various types of lesions, including chronic ulcers, burns, and surgical wounds. Regulatory bodies in several countries have approved medical-grade manuka honey for use in wound care. However, while the evidence is promising and growing, most clinical studies to date are small or lack rigorous controls, and more high-quality research is needed to fully establish efficacy and optimal usage guidelines. Thus, the use of Leptospermum scoparium, particularly as manuka honey, for treating lesions is supported both by traditional practices and an emerging body of scientific evidence.

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