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Most Manuka Honey studies are mechanism or observational rather than RCTs that measure a clinical effect — keep findings provisional.
Most evidence is from medium-quality randomised trials published 2012–2022.
Based on 4 studies · 1 RCT
Confidence
Low
Steady research
1 study in the last 5 years
201220172022
1Systematic Reviewn=272 participants across 4 RCTs · very large study2022
When compared with manuka honey dressings, the certainty of evidence was very low and no clear difference in complete wound healing or infection was demonstrated.
Ribeiro CT, Dias FA, Fregonezi GA · Cochrane Database Syst Rev (2022)
Cochrane review of dressings for venous leg ulcers in which manuka honey appears as a comparator dressing
Hydrogel vs manuka honey: very-low-certainty evidence, no clear difference in complete healing (RR 0.75, 95% CI 0.46-1.21; 1 trial, 108 participants) or wound infection
Confirms manuka honey is studied as a topical wound dressing, but evidence remains inconclusive
2Systematic Reviewn=715 participants across 10 RCTs · very large study2015
There is limited evidence to suggest that actively debriding a venous leg ulcer has a clinically significant impact on healing, with honey among the autolytic agents assessed.
Cochrane review of debridement methods for venous leg ulcers; honey was one of the autolytic agents evaluated
One trial (108 participants) reported numerically more honey-treated ulcers healed at 12 weeks (44% vs 33% for hydrogel); the difference was not clearly significant
Most trials were at high risk of bias; authors caution against strong conclusions of benefit
The results suggest that honey may provide better cough relief than diphenhydramine in children and improve the sleep quality of children and their parents.
Ayazi P, Mahyar A, Yousef-Zanjani M, Allami A, Esmailzadehha N, Beyhaghi T · PLoS One (2017)
Randomized trial in 87 children with cough from upper respiratory infection
Honey improved cough and sleep scores and was superior to diphenhydramine for most cough measures
Note: this used Iranian honey, not manuka specifically — the throat/cough benefit is a general honey effect