10 Clinical Studies on Natural Herpes Treatments (1,200+ Patients)
Quick Answer: Can Essential Oils Help Herpes?
Some plant-based treatments and essential oils have been studied for cold sores caused by herpes simplex virus. Clinical research involving more than 1,200 patients has examined treatments such as lemon balm, tea tree oil, propolis, and herbal creams. Several studies found these treatments may reduce pain, swelling, and healing time, although more large clinical trials are still needed to confirm their effectiveness. Below are a recap of the studies.
1. Lemon Balm Cream Study (115 Patients)
Lemon balm from the plant Melissa officinalis was tested as a topical cream for cold sores.
What researchers did:
Patients applied lemon balm cream to their cold sores several times per day.
Results:
60% of sores healed by day 4
87% healed by day 6
96% healed by day 8
Researchers concluded that lemon balm cream may help cold sores heal faster.
2. Lemon Balm Double-Blind Study (116 Patients)
In this study, patients were randomly given either lemon balm cream or a placebo (a cream with no active ingredients).
Results:
Patients using lemon balm had:
smaller lesions
less redness and swelling
faster healing
The lemon balm treatment performed better than the placebo.
3. Lemon Balm Recurrent Cold Sore Study (66 Patients)
This study focused on people who frequently get cold sores.
What researchers did:
Participants applied lemon balm cream four times daily for five days.
Results:
Patients reported:
reduced pain
less itching
faster healing times
4. Tea Tree Oil Clinical Trial (214 Volunteers)
Tea tree oil from the plant Melaleuca alternifolia was tested in a controlled trial.
Study design:
214 volunteers enrolled
About 100 participants developed outbreaks during the study and were evaluated.
Participants used either a tea tree oil ointment or a placebo cream.
Results:
Tea tree oil showed some potential to help cold sores heal, although results were mixed and more research is needed.
5. Tea Tree Oil Gel Study (20 Participants)
In this smaller study, patients applied a gel containing tea tree oil when their cold sore began.
Results:
Researchers observed:
slightly shorter infection duration
lower viral activity
Because the study was small, more research is needed to confirm the results.
6. Olive Leaf Extract Cream Study (66 Patients)
Olive leaf extract from the Olea europaea plant was tested as a topical cream.
Results:
Patients reported less:
itching
pain
bleeding
irritation
Symptoms improved faster compared to standard treatment in some cases.
7. Propolis Ointment Study (90 Patients)
Propolis is a natural resin collected by bees.
Study design:
Researchers compared three treatments:
propolis ointment
acyclovir (a common antiviral drug)
placebo cream
Results:
Patients using propolis healed faster than those using placebo and in some cases faster than those using acyclovir.
8. Sage and Rhubarb Cream Study (149 Patients)
Researchers tested creams made from sage (Salvia officinalis) and rhubarb (Rheum palmatum).
Study design:
Patients were treated with:
sage extract cream
rhubarb + sage cream
acyclovir cream
Results:
Healing times were very similar between the herbal cream and acyclovir:
herbal cream: about 6.7 days
acyclovir: about 6.5 days
9. Cat’s Claw Cream Study (74 Patients)
Cat’s claw (Uncaria tomentosa) is a medicinal plant from South America.
Study design:
Patients used either:
cat’s claw cream
acyclovir treatment
Results:
Healing times were similar between the two treatments.
10. Herbal Cold Sore Treatment Trial (292 Planned Participants)
Researchers tested a topical herbal treatment made from plants such as St. John’s wort (Hypericum perforatum) and calendula.
What researchers measured:
healing time
pain levels
lesion size
Results:
Early results suggested the herbal cream may reduce symptoms and support healing.
Summary of the Research
Across these studies:
More than 1,200 patients participated.
Several plant-based treatments showed potential for helping cold sores heal faster.
The most studied treatments were lemon balm, tea tree oil, propolis, and herbal creams.
However, researchers note that more large-scale clinical trials are needed to fully confirm the effectiveness of these natural treatments.
Simple Essential Oil Blends That May Help Cold Sore Symptoms
Some people use diluted essential oils as topical treatments to help soothe cold sore symptoms such as pain, swelling, and irritation. The following blends are commonly used in natural wellness practices.
Important: Essential oils should always be diluted before applying to skin.
Lemon Balm Soothing Blend Recipe
Ingredients
1 tablespoon coconut oil
2 drops lemon balm essential oil
How to use
Mix the oils together and gently apply a small amount to the cold sore area with a cotton swab up to twice per day.
Tea Tree Cold Sore Blend Recipe
Ingredients
1 tablespoon carrier oil (such as coconut or almond oil)
1 drop tea tree oil
How to use
Apply lightly to the affected area once or twice daily using a cotton swab.
Calming Chamomile Blend Recipe
Ingredients
1 tablespoon carrier oil
1 drop chamomile essential oil
How to use
Apply gently to irritated skin around the cold sore to help soothe inflammation.
Protective Herbal Balm Blend Recipe
Ingredients
1 tablespoon coconut oil
1 drop tea tree oil
1 drop lemon balm oil
How to use
Mix together and apply a very small amount to the affected area using a cotton swab.
Safety Tips:
Essential oils are highly concentrated and should always be diluted before applying to the skin. Stop using them if irritation occurs. Also, always consult your doctor before using essential oils.
Frequently Asked Questions
Can essential oils cure herpes?
No. Essential oils cannot cure herpes. The virus stays in the body permanently, but some natural treatments may help reduce symptoms or shorten outbreaks.
Which essential oil has the most research for herpes?
Lemon balm (Melissa officinalis) has some of the strongest research support for cold sores, with several studies showing faster healing and reduced symptoms.
How long do cold sores usually last?
Most cold sores heal within 7 to 10 days, although treatments may help reduce pain and speed recovery.
Are natural treatments as effective as antiviral drugs?
Some studies found certain plant-based creams performed similarly to antiviral creams in mild cases, but antiviral medications remain the standard treatment recommended by doctors.
References:
Lemon Balm (Melissa officinalis) for Treatment of Herpes Labialis. Clinical study summary. Clinician.com
Wölbling RH, Leonhardt K. Local therapy of herpes simplex with dried extract from Melissa officinalis. Phytomedicine. 1994. Sciencedirect.com
Systematic Review: Herbal Medicine for Treating Herpes Labialis (2024). Pubmed.com
Amin B., Oliva M. Comparative study of therapy with Melissa officinalis vs acyclovir in herpes lesions. International Journal of Odontostomatology. ijodontostomatology.com
Mazzanti G. et al. Inhibitory activity of Melissa officinalis extract on HSV-2 replication. Natural Product Research. PubMed.com