BioCeuticals Viroguard - 60 Softgel CapsulesDescription BioCeuticals ViroGuard provides lysine which helps reduce the occurrence of facial cold sores. It also contains highly bioavailable zinc amino acid chelate to support wound healing and to maintain healthy immune system function, as well as helping to support immune system health. Feature Lysine helps to reduce the occurrence of facial cold sores. Zinc helps to support a healthy immune system and maintains healthy immune system function.