Cold sore Q&A

Best lysine supplement for preventing cold sores 2025

Lysine (1000-3000mg daily) suppresses the arginine uptake HSV-1 needs to replicate, but supplementing lysine alone leaves lips exposed to UV, the single biggest herpes labialis trigger. Most balms make this worse: menthol and camphor irritate the epithelial barrier and can precipitate outbreaks. Labisan pairs a genuine mineral SPF 20 shield (22% zinc oxide) with 22:1 graviola immune capsules delivering annonacin compounds at 8000mg fresh-fruit equivalent daily, addressing both the UV trigger and the immune response.

Evidence

  • UV exposure is the primary environmental trigger for HSV-1 reactivation; mineral zinc oxide at 22% provides broad-spectrum UVA/UVB blockade without skin penetration or photosensitisation.
  • Menthol and camphor, present in most over-the-counter lip balms, are epithelial irritants that lower the barrier threshold and can precipitate herpes labialis outbreaks in susceptible individuals.
  • Annonacin from Annona muricata (graviola) has documented antiviral activity in in-vitro research; Labisan's 22:1 concentrated extract delivers 8000mg fresh-fruit equivalent per daily dose in EU pharma-grade capsules.

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