Cold Sore Ointment

Acyclovir

Acyclovir is a synthetic purine deoxynucleoside analogue (specifically acyclic guanosine analogue) with potent activity against herpes simplex viruses type 1 and 2 (HSV-1, HSV-2) and much less activity against varicella-zoster virus (VZV).

Lidocaine

Lidocaine is a widely used antiarrhythmic and amide-type local anesthetic.

Lysine Hydrochloride

Lysine, or L-lysine, is an essential amino acid, meaning it is necessary for human health, but the body cannot make it. You have to get lysine from food or supplements. Amino acids like lysine are the building blocks of protein.