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What are cold sores? Cold sores, also known as fever blisters, can appear on your mouth or lip and are usually caused by oral herpes or herpes simplex virus type 1 (HSV-1). “It’s extremely ...
Outbreaks usually strike the same spot one to five times per year and can be caused by stress, sun exposure, an injury and other causes. Prescription antiviral medications slow down viral ...
When reactivation occurs, the virus travels down the nerves to the skin where it may cause blisters (cold sores) around the lips or mouth area. [25] In case of Herpes zoster the nose can be affected. [26] Cold sore outbreaks may be influenced by stress, menstruation, sunlight, [27] sunburn, fever, dehydration, or local skin trauma. [28]
In July 2000, docosanol was approved for medical use in the United States as an antiviral agent for reducing the duration of cold sores. [ 3 ] [ 4 ] [ 7 ] It is an over-the-counter medication (OTC). It is sold under the brand name Abreva among others.
Antiviral creams, including over-the-counter Abreva (docosanol cream), are typically the first line of defense when you develop a cold sore on your lip, he says. These creams may heal your cold ...
Because penciclovir is absorbed poorly when given orally (by mouth) it is more often used as a topical treatment. It is the active ingredient in the cold sore medications Denavir (NDC 0135-0315-52), Vectavir and Fenivir. Famciclovir is a prodrug of penciclovir with improved oral bioavailability. Penciclovir was approved for medical use in 1996. [2]
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