Mānuka Honey for Sore Throat and Immunity — What the Evidence Actually Says

Honey has been used for sore throats for thousands of years — but not all honey is the same. Mānuka honey's MGO compound is associated with antibacterial properties attributed to methylglyoxal (MGO) content, the dominant antibacterial constituent of Mānuka honey (Mavric et al., 2008). Our FAQ page covers quick questions — this article explains exactly what the evidence says and how to use it effectively.

Why a Sore Throat Happens

Most sore throats are caused by one of two things: viral infection (responsible for about 70–80% of cases, including colds, flu, and COVID) or bacterial infection (typically Streptococcus pyogenes, the cause of strep throat). A third category — irritation from post-nasal drip, dry air, or acid reflux — isn't infectious but involves the same inflamed, irritated tissue.

Mānuka honey may be relevant to all three: its antibacterial properties attributed to methylglyoxal (MGO) content, the dominant antibacterial constituent of Mānuka honey (Mavric et al., 2008), may target bacterial causes; research suggests it has anti-inflammatory properties that could reduce tissue irritation regardless of cause; and its physical coating action soothes the mucous membranes mechanically.

The Mechanism: Three Ways It Helps

Coating and physical protection

When you take a teaspoon of honey slowly, it coats the mucous membranes of the throat in a viscous film. This physical barrier reduces the friction and exposure that make every swallow painful. It also keeps the tissue moist, which matters — dry, inflamed tissue heals more slowly.

Antimicrobial activity

Laboratory studies have shown that Mānuka honey's MGO compound exhibits activity against Streptococcus pyogenes — the bacterium behind strep throat — in laboratory testing (Mavric et al., 2008). Research also suggests activity against Staphylococcus aureus and bacteria commonly implicated in tonsillitis (Carter et al., 2016). For viral sore throats, the direct antibacterial effect is less relevant, but it may reduce the risk of secondary bacterial infection during the window when your throat tissue is compromised.

Anti-inflammatory effects and sore throat symptom relief

Research suggests that bioactives in Mānuka honey may help reduce local tissue inflammation, potentially contributing to less swelling, less pain, and faster tissue recovery. A systematic review and meta-analysis by Abuelgasim et al. (2021) found that honey was superior to usual care for symptomatic relief of upper respiratory tract infections, including cough frequency and severity — though it is important to note that this meta-analysis was conducted on honey generally, and was not specific to Mānuka honey. There is also preliminary evidence that honey may have a mild prebiotic effect, supporting beneficial bacteria of the oral microbiome.

How to Use It for a Sore Throat

The method matters. The goal is to coat the throat, not just eat the honey:

• Take one teaspoon of UMF 15+ Mānuka Honey straight from the spoon
• Let it sit in the back of your throat for 10–15 seconds before swallowing slowly — don't chase it immediately with water
• Repeat 3–4 times daily when symptomatic; before bed is particularly useful as the coating persists longer when you're not eating or drinking
• Do not add to boiling water or hot drinks — heat above ~40°C degrades MGO. Warm water is fine

Mānuka Honey and Oral Health

Beyond sore throat use, there is some preliminary evidence for Mānuka honey's role in oral health. A small pilot study by English et al. (2004) found that Mānuka honey reduced plaque and gingival bleeding compared to a control group. The authors themselves describe this as a pilot study with a small sample size, and the findings should be considered preliminary — larger, controlled trials are needed before firm conclusions can be drawn. Antibacterial properties attributed to methylglyoxal (MGO) content, the dominant antibacterial constituent of Mānuka honey (Mavric et al., 2008), are considered a plausible mechanism for these observed effects.

What It Won't Do

If you have a confirmed strep infection, Mānuka honey is not a substitute for prescribed antibiotics — strep left untreated carries genuine risks (rheumatic fever, kidney complications). Use Mānuka honey alongside antibiotics to soothe symptoms and support recovery, not instead of them. For viral sore throats, research suggests it is among the more evidence-informed natural options available, particularly for symptom relief (Abuelgasim et al., 2021).

Our UMF 15+ East Cape Mānuka Honey is certified, MGO 514+ verified, and sourced from the region that produces the highest natural MGO concentrations in the world. That's the only grade worth reaching for when you're using it therapeutically.

References

1. Abuelgasim H, Albury C, Lee J. (2021). Effectiveness of honey for symptomatic relief in upper respiratory tract infections: a systematic review and meta-analysis. BMJ Evidence-Based Medicine 26(2):57–64. PMID: 32817011.

2. Mavric E, Wittmann S, Barth G, Henle T. (2008). Identification and quantification of methylglyoxal as the dominant antibacterial constituent of Manuka honeys. Molecular Nutrition & Food Research 52(4):483–489. PMID: 18210383.

3. English HK, Pack AR, Molan PC. (2004). The effects of manuka honey on plaque and gingivitis: a pilot study. J Int Acad Periodontol 6(2):63–67. PMID: 15125017.

4. Carter DA, Blair SE, Cokcetin NN, et al. (2016). Therapeutic Manuka Honey: No Longer So Alternative. Frontiers in Microbiology 7:569. PMID: 27148246.