Cold Sore Kit

Cold sores are blisters most often found on or around the mouth caused by the herpes simplex virus, which is categorized into two types: HSV-1 and HSV-2. They are also referred to as fever blisters or oral herpes.

Valacyclovir is an antiviral suppressive approved by the FDA to treat herpes simplex, which is categorized into two types: HSV-1 and HSV-2. Valacyclovir works by blocking the virus' polymerase enzyme. By doing so, the medicine is able to stop the herpes simplex virus from building DNA and replicating itself. This reduces the severity of your cold sores and flare-ups, as well as the ability for the virus to transfer between hosts. The active ingredient in valacyclovir is valacyclovir hydrochloride.

Valacyclovir is used to treat shingles, genital herpes, and cold sores. It does not cure herpes infections but decreases pain and itching, helps sores to heal, and prevents new ones from forming.

For adults treating cold sores, the typical dose of valacyclovir is 2,000 mg, with a secondary dose of 2,000 mg 12 hours later.

After oral ingestion, valacyclovir is rapidly absorbed from the gastrointestinal tract and nearly completely converted to acyclovir and L-valine. The half life of acyclovir is about 2.5 to 3.3 hours in people with normal renal function. This means that about 2.5 to 3.3 hours after you take a dose of valacyclovir, about half of the active ingredient will remain in your blood.

Valacyclovir works best when taken within 24 hours of the first symptoms and will reduce your symptoms in about 2-3 days.

Valacyclovir is generally well tolerated when taken as directed by a doctor. Side effects may include headache, dizziness, nausea, stomach pain, or vomiting. It is important to stay well hydrated while taking valacyclovir to avoid these symptoms. If any of these side effects persist or worsen, please contact your doctor.