This content has not been reviewed within the past year and may not represent Web MD's most up-to-date information. To find the most current information, please enter your topic of interest into our search box. 27, 2002 -- Here's good news for cold sore sufferers. Just one day of treatment with a medication called Valtrex makes the unsightly, painful sores disappear faster. A study presented at the American Academy of Dermatology's summer meeting, held in New York this week, outlines results from a large trial of Valtrex. "The findings of these studies are encouraging as they show there may be a convenient and effective way for people with cold sores to treat their outbreaks," says researcher Stephen K. Tyring, MD, Ph D, of the University of Texas Medical Branch at Galveston, in a news release. A one-day oral treatment that shortens the duration of outbreaks has clear advantages over currently available topical treatments, he says. Valacyclovir is used to treat infections caused by certain types of viruses. In children, it is used to treat cold sores around the mouth (caused by herpes simplex) and chickenpox (caused by varicella zoster). In adults, it is used to treat shingles (caused by herpes zoster) and cold sores around the mouth. The viruses that cause these infections continue to live in the body even between outbreaks. Valacyclovir is also used to treat outbreaks of genital herpes. Valacyclovir decreases the severity and length of these outbreaks. In people with frequent outbreaks, this medication is used to reduce the number of future episodes. It helps the sores heal faster, keeps new sores from forming, and decreases pain/itching. This medication may also help reduce how long pain remains after the sores heal. Read the Patient Information Leaflet if available from your pharmacist before you start taking valacyclovir and each time you get a refill. Sertraline dosage for dogs Clomid ovidrel Buy cialis new york Valtrex Valacyclovir belongs to the class of medications known as antivirals. It is also used to treat cold sores, and to treat and prevent recurrences of genital. Valtrex received an overall rating of 8 out of 10 stars from 35 reviews. As soon as I feel a cold sore starting I take 2 grams of Valtrex and then 1 gram later in the. Valtrex can treat cold sores, recurrent infections caused by the herpes virus. Treating Cold Sores With Valtrex and Other Prescription Drugs. The recommended dosage of VALTREX for treatment of cold sores is 2 grams twice daily for 1 day taken 12 hours apart. Therapy should be initiated at the earliest symptom of a cold sore (e.g., tingling, itching, or burning). The recommended dosage of VALTREX for treatment of initial genital herpes is 1 gram twice daily for 10 days. Therapy was most effective when administered within 48 hours of the onset of signs and symptoms. The recommended dosage of VALTREX for chronic suppressive therapy of recurrent genital herpes is 1 gram once daily in patients with normal immune function. In patients with a history of 9 or fewer recurrences per year, an alternative dose is 500 mg once daily. In HIV─1─infected patients with a CD4 cell count greater than or equal to 100 cells/mm The recommended dosage of VALTREX for treatment of herpes zoster is 1 gram 3 times daily for 7 days. Valtrex is a prescription antiviral medication that works by slowing down the progression of the herpes virus, allowing the body to heal from outbreaks, such as cold sores. The typical adult dosage for cold sore treatment is 2 g every 12 hours for one day, but your doctor may adjust your dosage to accommodate your specific needs. Valtrex therapy may be started after a cold sore has erupted, but the best treatment results are achieved by beginning Valtrex therapy at the first signs of a cold sore, such as tingling, burning or blisters. Talk to your doctor if you experience cold sores frequently or can identify a cold sore trigger, such as exposure to intense sunlight. He may choose to prescribe Valtrex therapy as a preventive measure. To avoid spreading the virus to others, avoid kissing and sharing items that have come into contact with your mouth and wash your hands frequently until cold sore lesion has completely healed. Side effects of Valtrex include headache, dizziness, drowsiness, nausea, vomiting, diarrhea, constipation or allergic reaction. Make sure your doctor and pharmacist are aware of all medications and supplements you are taking, as well as your medication allergies. Valtrex cold sore How Long Does it Take for Valtrex to Work on a Cold Sore?, Valtrex Reviews Everyday Health Where to buy viagra online reviewsCytotec birth defectsBest site to order kamagraPropranolol anxiety The efficacy of VALTREX initiated after the development of clinical signs of a cold sore e.g. papule, vesicle, or ulcer has not been established. Valtrex Valacyclovir Hydrochloride Side Effects, Interactions.. Valtrex and Other Antivirals That Treat Cold Sores - Verywell Health. Valtrex User Reviews for Cold Sores at. One-day treatment with the prescription antiviral drugs famciclovir Famvir or valacyclovir Valtrex shortens cold sore symptoms by one to two. Aug. 27, 2002 -- Here's good news for cold sore sufferers. Just one day of treatment with a medication called Valtrex makes the unsightly, painful sores. A cold sore is a skin infection that is caused by the herpes simplex virus HSV. Famvir for Cold Sores; and; valaciclovir tablets brand names Valtrex, Zelitrex.