Manuka honey has strong antibacterial properties
- Caregiver

- Oct 7, 2025
- 5 min read
Updated: Oct 8, 2025
UMF 18+ (MGO 692+): Strong antibacterial and germicidal power, ideal for wound care and bacterial infections.
UMF 23+ (MGO 1046+): Exceptional antibacterial and germicidal efficacy, perfect for advanced therapeutic uses like chronic wounds.
1. Manuka honey has strong antibacterial properties
Manuka honey, derived from the nectar of the Manuka tree (Leptospermum scoparium) in New Zealand, has well-documented antibacterial properties, primarily due to methylglyoxal (MGO) and other compounds like hydrogen peroxide. Historical use of honey for wound treatment is also accurate, as ancient cultures, including Egyptians and Greeks, used honey topically for its antimicrobial effects. Studies confirm Manuka honey’s efficacy against a range of bacteria, including antibiotic-resistant strains, due to its unique non-peroxide activity.
2. Manuka honey for MRSA infection
Methicillin-resistant Staphylococcus aureus (MRSA) is a hospital-acquired or community-acquired superbug resistant to many conventional antibiotics, often linked to antibiotic overuse. Research, including in vitro and some clinical studies, shows Manuka honey can inhibit MRSA due to its high MGO content and low pH, which create an unfavorable environment for bacterial growth. However, while promising, evidence for its effectiveness in treating MRSA infections in humans is not yet conclusive, and it’s not a standard clinical treatment. It may be used as a complementary therapy, but more robust clinical trials are needed.
3. Manuka honey for strep throat
Strep throat is caused by Streptococcus pyogenes (group A streptococcus), leading to throat inflammation and pain. Manuka honey’s antibacterial properties can inhibit Streptococcus pyogenes in vitro, and some studies suggest it may reduce bacterial load or soothe symptoms like sore throat due to its anti-inflammatory and coating effects. However, claims that it can “cure” strep throat are overstated, as no large-scale clinical trials definitively prove it eliminates the infection entirely. Anecdotal relief is common, and it may help as a supportive remedy, but antibiotics remain the standard treatment for strep throat to prevent complications like rheumatic fever.
4. Wound, Burns, and Skin Ulcers
Manuka honey’s antibacterial, anti-inflammatory, and antioxidant properties make it effective for topical use on wounds, minor burns, and skin ulcers. It promotes a moist healing environment, reduces infection risk, and accelerates tissue repair. Clinical studies support its use, and medical-grade Manuka honey is incorporated into dressings for burns and chronic wounds in some healthcare settings. It’s particularly recommended for minor burns, as noted, but severe burns require medical supervision.
5. Manuka honey for Stomach Ulcers
Helicobacter pylori (H. pylori) is a common cause of stomach ulcers and other gastric issues. In vitro and some animal studies show that Manuka honey’s antibacterial properties, particularly its MGO content, can inhibit H. pylori growth. However, human clinical evidence is limited, and while promising, it’s not a standard treatment. Manuka honey may help alleviate symptoms or support gut health, but conventional treatments like antibiotics and proton pump inhibitors are typically required to eradicate H. pylori and heal ulcers.
6. Gastric Problems
An imbalance of gut bacteria, including conditions like Small Intestinal Bacterial Overgrowth (SIBO), can cause diarrhea, abdominal pain, and other gastric issues. Low stomach acid may exacerbate these problems. Manuka honey’s antibacterial properties could theoretically reduce harmful bacteria in the gut, and its prebiotic potential may support beneficial gut flora. However, there’s limited direct evidence linking Manuka honey to SIBO treatment specifically. It may help alleviate some symptoms, but SIBO typically requires targeted therapies like antibiotics or dietar changes.

Understanding UMF and MGO
UMF (Unique Manuka Factor):
Measures the potency and purity of Manuka honey, primarily based on methylglyoxal (MGO), leptosperin, and other bioactive compounds. Higher UMF ratings indicate stronger antibacterial activity.
MGO:
Quantifies the methylglyoxal content (mg/kg), the primary compound responsible for Manuka honey’s non-peroxide antibacterial activity.
UMF 15+, MGO 514+
excellent for supporting throat health due to its strong antibacterial properties. It may aid skin health when applied topically, help soothe cold symptoms, and combat certain bacterial pathogens. While promising, its effectiveness against viruses is less certain and requires more research.
UMF 18+ (MGO 692+):
High potency, suitable for therapeutic uses like wound care and bacterial infections.
UMF 23+ (MGO 1046+): Very high potency, among the strongest available, used for advanced therapeutic applications.
UMF 23+ is often used in medical-grade products for chronic wounds, ulcers, and severe bacterial infections. Its germicidal power is among the highest for Manuka honey, making it a premium choice for therapeutic applications.
⚠️ Higher UMF/MGO grades are more expensive, so ensure authenticity with certified UMF or MGO labels. Avoid use in infants under 1 year due to botulism risk or in those with honey allergies.
Tips for Buying Authentic Manuka Honey
Manuka honey is pricey (often $20–$100+ per jar) due to its limited production in New Zealand and high demand, but fakes are rampant—up to 50% of products may be diluted or mislabeled. Focus on authenticity to get the real benefits like antibacterial potency from methylglyoxal (MGO).
Here’s how to shop smart:
Prioritize Certifications:
Look for UMF™ (Unique Manuka Factor) rating (e.g., 10+ for daily use, 15+ for therapeutic). It tests for four markers: MGO (potency), leptosperin (authenticity), DHA (shelf life), and HMF (freshness). MGO alone (e.g., 400+ mg/kg) is good but less comprehensive. Avoid vague terms like “bio-active” or “factor” without UMF. Australian options should have AMHA certification.
Source from New Zealand: Must be labeled “Product of New Zealand” and “Packed in New Zealand” to prevent adulteration during shipping. Brands blending lower-grade honey or sourcing elsewhere are suspect.
Check Transparency:
Reputable brands provide batch-specific lab results (scan QR codes) and avoid additives. Raw, unpasteurized is best for preserving enzymes.
Consider Potency and Use:
• UMF 5–9/MGO <250: Everyday (tea, toast).
• UMF 10–14/MGO 250–400: Sore throats,
general wellness.
UMF 15+/MGO 514+: Therapeutic (wounds, infections). Higher grades = stronger flavor (terroir-like, slightly bitter) and darker color.
Where to Buy:
Direct from brand sites for best prices and freshness; Amazon or iHerb for convenience (check seller ratings). Avoid big-box stores with unverified stock. Start small to test taste.
Red Flags:
Too cheap (<$1/oz), no origin label, or claims without third-party tests. Store in a cool, dark place; shelf life is 2–5 years.
Top Brand Recommendations (2025)
Based on recent tests for potency, authenticity, and value (e.g., ConsumerLab, expert reviews), here are standout options. Prices are approximate for 8–17 oz jars.
Comvita: $30–$80
UMF 10+ to 20+ (MGO 263–829+) Pioneer brand; carbon-neutral goals; high hydrogen peroxide activity; trusted for 40+ years. Passed all authenticity tests.
Manuka Health: $25–$90
UMF 5+ to 22+ (MGO 83–950+) First to trademark MGO labeling; glyphosate-free; excellent for immunity/sore throats. Top in potency consistency.
New Zealand Honey Co:$40–$150
UMF 5+ to 28+ (MGO 83–1450+) Rare high grades; batch QR traceability; rich, complex taste. Won “best overall” in taste/potency tests.
Wedderspoon: $15–$40
K-Factor 12–22 (MGO 50–400+) Affordable entry; non-GMO, glyphosate-free; focuses on pollen purity. Good for beginners.
Manukora:$30–$70
MGO 100+ to 850+ (UMF equivalents) Smooth, smoky flavor; transparent sourcing; supports gut/digestion. High user ratings for texture.
Manuka Doctor: $25–$60
MGO 100+ to 800+ 5x tested per batch; MPI-compliant; packed in NZ. Strong on wound care claims.
These picks aced 2025 lab tests for MGO levels (96–1,113 mg/kg range across brands) and freshness. For therapeutic uses (e.g., UMF 15+ as you mentioned), aim for Comvita or Manuka Health. If budget’s tight, Wedderspoon delivers solid basics.



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