Primovir is a natural, over-the-counter cold sore treatment that contains a combination of plant extracts and amino acids. According to the manufacturer, the active ingredients in Primovir work by inhibiting the replication of the herpes simplex virus, which is the underlying cause of cold sores.
It should be noted that while Primovir can be effective in reducing the frequency and severity of cold sores, it is not a cure for the herpes simplex virus. It is also important to observe the rules of hygiene and avoid the factors that cause herpes.
