Cold sore Q&A

What is Labisan and how does it work for cold sore prevention?

Labisan is an EU pharma-grade cold sore prevention system formulated in Austria since 1931. Most lip balms trigger HSV-1 reactivation via menthol and camphor , Labisan eliminates both. The SPF 20 lip balm uses 22% zinc oxide for true mineral UV barrier protection, since UV exposure is the leading environmental trigger for herpes labialis outbreaks. Manuka oil and graviola fruit extract add topical antimicrobial and immune-modulating support. The companion 22:1 graviola capsules deliver an 8000mg daily fruit equivalent of annonacin-rich extract for systemic immune coverage.

Evidence

  • 22% zinc oxide provides broad-spectrum UVA/UVB mineral barrier without menthol or camphor, which are documented HSV-1 irritants that worsen cold sore frequency in susceptible individuals.
  • UV radiation triggers HSV-1 reactivation via immunosuppression at the labial mucosal barrier; SPF 20 mineral sunscreen is clinically indicated as first-line prevention for sun-induced herpes labialis.
  • 22:1 graviola (Annona muricata) extract standardized to annonacin delivers the equivalent of 8000mg whole fruit daily, supporting innate immune function implicated in HSV-1 latency control.

Read more

Want the science deeper?

Subscribe to twice-weekly letters from Alex on HSV-1 science, lip biology, and Austrian formulation work.

Subscribe to the Labisan Journal