Cold sores are from the HSV-1 virus. It produces blister like lesions around and on the lips and can spread to other areas of the face. It is important not to touch the lesions as it can spread the virus. L Lysine is an amino acid that slows viral growth and aides the body in driving the virus down. Lobelia also is a potent antiviral that can stop HSV-1 virus from replicating, and topical lemon balm prohibits the virus from infecting other cells. Zinc deficiencies can contribute to continual cold sores as well as stress, so it can also help to take zinc daily. Consult with your provider for dosing recommendations.