Protocol · Infectious Disease
Cold Sores (Herpes Labialis) Prevention and Treatment Protocol
L-Lysine and Honey (Topical) are the core of this stack, with 6 supporting supplements. Each row gives the amount the protocol lists and the grade our evidence database holds for that supplement in Cold Sores (Herpes Labialis) Prevention and Treatment.
We are re-verifying the studies cited on protocol pages; only confirmed citations are shown.
The stack
8 supplements · 1 graded · 2 confirmed studies
| Grade | Supplement | Amount listed | Why it’s in the stack | Evidence on file | Shop |
|---|---|---|---|---|---|
| Primary stackThe core of this protocol | |||||
| L-Lysine | Amount listed: 1,000 mg 3 times daily during outbreak; 500–1,000 mg daily for prevention | Competes with arginine which is needed for viral replication; may reduce outbreak frequency and duration
| Grade D for Cold Sore Recurrence Frequency1 study · 26 people | ||
Confirmed studies for L-Lysine (titles as PubMed lists them) | |||||
| Honey (Topical) | Amount listed: Apply medical-grade honey (Manuka or similar) to lesion 3–4 times daily | Antiviral and wound-healing properties; may speed healing as effectively as acyclovir | Not graded yet | ||
| Supporting stackListed as additions to the core | |||||
| Zinc (Topical and Oral) | Amount listed: Topical zinc oxide cream; oral 15–30 mg daily for immune support | Topical zinc may reduce duration; oral zinc supports immune function | Not graded yet | ||
| Lemon Balm (Melissa) | Amount listed: Apply lemon balm cream/extract to lesion 2–4 times daily | Antiviral activity against HSV; topical application may reduce symptoms and healing time
| Not graded yet | ||
Confirmed studies for Lemon Balm (Melissa) (titles as PubMed lists them) | |||||
| Vitamin C | Amount listed: 500–1,000 mg daily | Supports immune function; may help prevent outbreaks | Not graded yet | ||
| Propolis | Amount listed: Apply propolis ointment 3–4 times daily | Bee product with antiviral properties; may speed healing when applied topically
| Not graded yet | ||
| Vitamin E (Topical) | Amount listed: Apply vitamin E oil to lesion several times daily | May reduce pain and speed healing when applied topically | Not graded yet | ||
| Echinacea | Amount listed: 300–500 mg standardized extract daily during outbreak | May support immune response against viral infections | Not graded yet | ||
Shop the evidence-backed picks
The collection holds the supplements we grade A or B for its theme, in third-party tested products where the catalog has them. It opens in our Fullscript store. You can look through it without signing in; Fullscript asks for a free account to order.
Or shop one supplement
Each opens third-party tested products, matched to the dose above where we can.
- Grade D
We earn from purchases made in our Fullscript store, and links to Fullscript, iHerb or Thorne carry our referral, so we may earn a commission at no extra cost to you. Grades come from the research and never change based on what we earn. Full disclosure
How this protocol works
In plain language
Cold sores (herpes labialis) are caused by herpes simplex virus type 1 (HSV-1), which infects most people in childhood and remains dormant in nerve cells for life. Outbreaks cause painful blisters on or around the lips that typically last 7-10 days. Triggers include stress, sun exposure, illness, fatigue, hormonal changes, and immune suppression. While there's no cure, treatments can shorten outbreaks and reduce frequency.
CRITICAL: For frequent or severe outbreaks (more than 6 per year or lasting >2 weeks), prescription antiviral medications (acyclovir, valacyclovir) are more effective than supplements. These work best when started at the first tingling sensation. Cold sores are contagious - avoid kissing or sharing utensils during outbreaks. See a doctor if sores spread to eyes (herpes keratitis is sight-threatening), if you have a weakened immune system, or if outbreaks are unusually severe or frequent. These supplements may help reduce outbreak frequency and duration but don't replace antivirals for significant disease.
L-Lysine* is the most studied supplement for cold sores. It competes with arginine, an amino acid the virus needs to replicate. Studies show it may reduce the frequency, duration, and severity of outbreaks. Avoid high-arginine foods (nuts, chocolate, seeds) during outbreaks.
Honey (Topical)* has antiviral and wound-healing properties. Clinical trials show medical-grade honey (like Manuka) applied to cold sores can speed healing comparably to acyclovir cream.
Zinc* applied topically can reduce duration of cold sores. Oral zinc supports immune function.
Lemon Balm (Melissa officinalis)* has demonstrated antiviral activity against HSV. Topical cream applied early can reduce symptoms and healing time.
Vitamin C* supports immune function and may help reduce outbreak frequency.
Propolis* (bee product) has antiviral properties and may speed healing when applied topically.
Vitamin E* applied topically may reduce pain and promote healing.
Echinacea* may support the immune response against viral infections.
Expected timeline: Topical treatments should be started at first tingle for best results. Lysine prevention requires consistent daily use. Typical cold sore duration is 7-10 days; treatments may reduce this by 1-3 days.