Spirulina contains lysine, an essential amino acid that helps inhibit the replication of the herpes virus. Some studies suggest that increasing lysine intake can help reduce the frequency of outbreaks and severity of symptoms.
Vitamin C and vitamin E are powerful antioxidant that support immune function. It may shorten the duration of herpes outbreaks and promote healing. Zinc is important for immune function and may help reduce the duration of cold sores by promoting faster healing and reducing inflammation.