Product Descriptions Favic is an antiviral medicine used to treat recurrent outbreaks of cold sores in adults 18 years of age and over who have a normal immune system the body system which fights against harmful bacteria, viruses and fungi. Cold sores are an infection caused by a virus called herpes simplex type 1 HSV-1. The infection is most commonly acquired as a baby or child from contact with parents or relatives, often from kissing. Cold sores usually begin on or around the lips, mouth, and nose as small red bumps that turn into fluid-filled blisters. Cold sores can be tender and painful. Many people who get cold sores know when one is coming by a tingling, burning, itchy or painful sensation or redness in the area. This can happen very rapidly. Some common triggers to a cold sore may include: Sun exposure Stress Fatigue Menstrual periods Fever Illness Dry chapped lips Skin trauma A cold. Although Favic does not cure the viral infection, it helps to relieve the symptoms and shorten the duration of an outbreak. The best results are obtained if the medicine is started as soon as possible after the onset of symptoms of a cold sore, such as tingling, itching or burning, or the appearance of the first signs, such as redness or swelling. This is when the virus is reproducing rapidly. This medicine is not recommended for use in infants, children or adolescents under 18 years of age.