Lemon Balm Compress for Cold Sores (and Why the Trials Used a Cream, Not a Tea)

Category: Skin

How to make a lemon balm compress for a cold sore: the strong infusion method, when to start, hygiene rules, and why the trials used a cream rather than tea.

Traditional uses & benefits

• The tingling, burning stage of a cold sore on or around the lip
• A strong cooled lemon balm infusion applied on a cotton pad, three to four times daily, starting as early as possible

Ingredients

• Dried lemon balm leaf (Melissa officinalis) (4 tbsp (approximately 12 g))
• Just boiled water (250 mL)
• Cotton wool pad or clean cloth (1 pad per application)

How to prepare

1. Start at the first tingle. Herpes simplex replicates quickly and the proposed mechanism blocks the virus entering cells, so an application at the tingling stage has far more chance of helping than one after a blister has formed. 2. Put 4 tbsp of dried lemon balm into a heatproof cup and pour over 250 mL of just boiled water. 3. Cover and steep for 15 minutes. Covering matters, since the volatile oils otherwise leave with the steam. 4. Strain and cool to room temperature or cooler. Cool feels better on a cold sore than warm, and warmth is not part of the mechanism here. 5. Wash your hands. Soak a fresh cotton pad, squeeze out the excess, and hold it against the spot for 5 to 10 minutes. 6. Discard the pad immediately. Do not put it back in the infusion, and do not use it on anything else. 7. Wash your hands again, thoroughly. This is the step that stops you transferring the virus to your eye, which causes ocular herpes and is serious. 8. Repeat 3 to 4 times daily. Refrigerate the remaining infusion and discard it after 24 hours. 9. If you get cold sores regularly, buy a standardised 1% Melissa cream or a propolis ointment and keep it in the house. Those are what the trials tested, and having one on hand at the tingle stage is worth more than any infusion you make after the fact.

Why it works

In laboratory work, lemon balm's rosmarinic and caffeic acids bind to the surface of the herpes virus and block it attaching to cells. That is a cell culture finding rather than something shown in human skin, but it is the reason timing is thought to matter so much.

Time to effect

Untreated cold sores generally heal in 7 to 10 days. In trials of the standardised cream, differences were visible by day 2. Expect less from an infusion.

Not right for

Not for a first ever outbreak, which should be seen by a clinician, and not for anyone immunocompromised or with eczema, where herpes can spread dangerously. Not for infants. Not for any lesion near the eye, and any eye pain or visual change during an outbreak is an emergency. It is also not a substitute for prescribed antivirals if you have been given them.

What the evidence says

The lemon balm trials used a standardised 1% Melissa officinalis extract cream, where a double blind placebo controlled study of 66 patients found benefit apparent by day 2. A tea bag compress is not that preparation, and it is honest to expect less from it.

Who it suits best

Best for an adult who gets occasional recurrent cold sores, recognises the tingle, and wants something to do immediately at that moment. Anyone getting frequent outbreaks is better served by keeping a standardised Melissa cream or propolis ointment in the house, or by asking a doctor about antivirals.

When to take it

acute

Common mistakes

• Assuming a tea bag reproduces the trial result. The studies used a standardised 1% Melissa extract cream. An infusion delivers an unknown and much lower concentration, and pretending otherwise is the exact overclaim this library exists to avoid.
• Starting once the blister has appeared. The mechanism blocks the virus entering cells, so the tingling stage is when it has the best chance. After a blister forms, most of the opportunity has gone.
• Reusing the cotton pad or dipping it back into the infusion. That spreads the virus and contaminates the batch.
• Not washing hands afterwards. Transferring herpes to the eye causes ocular herpes and can threaten sight. This is the most serious avoidable harm associated with cold sores.
• Taking lysine instead. Cochrane found no evidence of efficacy for lysine in preventing cold sores, despite it being one of the most recommended options online.
• Making a weak infusion. Use around four times the amount you would for a cup of tea.
• Using old, scentless dried lemon balm that has lost its volatile oils.
• Sharing towels, lip balm or cups during an outbreak, or kissing a newborn, which is genuinely dangerous.

How we read the research

Double blind placebo controlled trials support a standardised 1% Melissa cream, with differences visible by day two. No trial has tested a home infusion compress, which is weaker and more variable.

Sources

• Balm mint extract (Lo-701) for topical treatment of recurring herpes labialis (Koytchev 1999) (1999): Koytchev R, Alken RG, Dundarov S. Phytomedicine. 1999;6(4):225-30. Randomised, double blind, placebo controlled trial of a standardised balm mint (Melissa officinalis) extract cream in recurrent herpes labialis, n=66. Significant benefit on the combined symptom score by day 2, the point at which symptoms are typically worst. NOTE the preparation: a standardised extract CREAM, not an infusion or tea-bag compress.
• Lip creams with propolis special extract GH 2002 0.5% versus aciclovir 5.0% for herpes labialis (vesicular stage): randomized, controlled double-blind study (Jautova 2019) (2019): Jautova J et al. Wien Med Wochenschr. 2019;169(7-8):193-201. Randomised, controlled, double blind, n=198. Propolis special extract GH 2002 at 0.5% in a lip cream vs aciclovir 5.0% for herpes labialis. The predefined clinical endpoint was reached after a median 3 days with propolis against 4 days with aciclovir. This is a single RCT in HERPES LABIALIS, not a review and not a study of aphthous ulcers.
• Interventions for prevention of herpes simplex labialis (Cochrane CD010095, Chi et al.) (2015): Cochrane review of preventive interventions for cold sores. Found no evidence of efficacy for lysine, among other interventions. Cited specifically to support this record's rejection of lysine, which is one of the most widely recommended and least supported cold sore remedies.

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*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.