Why does valtrex not work

For adults treating a first outbreak of genital herpes, 1,mg of valacyclovir two times daily for a total of 10 days. For adults with recurring genital herpes, mg of valacyclovir two times daily for a total of three days. The best approach for treating any virus, including HSV or VZV, is talk to your doctor and follow their treatment advice.

Breastfeeding or pregnant women should also discuss the risks of valacyclovir treatment with their doctor. Medications that can potentially interact with valacyclovir include foscarnet, tenofovir, mycophenolate, zidovudine and the varicella virus and zoster virus vaccines. If you use any of these medications, you should discuss potential interactions with your doctor before considering valacyclovir or any other herpes treatment.

Valacyclovir has several potential side effects, the most common of which affecting more than one percent of users are vomiting, diarrhea, headache and nausea. Our guides to valacyclovir cover every aspect of the medication, including:. Valacyclovir vs. Alternative Herpes Treatments: Which is Best? This article is for informational purposes only and does not constitute medical advice. The information contained herein is not a substitute for and should never be relied upon for professional medical advice.

Always talk to your doctor about the risks and benefits of any treatment. Insider tips, early access and more. Top Treatments.

In three complementary crossover trials, short episodes of genital shedding occurred despite daily therapy, according to Christine Johnston, MD, of the University of Washington in Seattle, and colleagues. The finding may explain why even high doses of anti-herpetic drugs do not prevent transmission of the virus, Johnston and colleagues suggested online in The Lancet. The researchers enrolled patients with confirmed HSV-2 infection for the three trials, which tested:.

Participants in each trial were assigned to one of the arms for four through seven weeks, had a week without any treatment, and then were crossed over to the other arm. They took genital swabs four times a day and all told collected 23, swabs, of which 1, or 5. The number of such episodes per person year — the annualized episode rate — ranged from a high of Like with other outbreaks of HSV, valacyclovir will speed up the speed at which cold sores heal, but it can still take seven to 10 days for them to fully disappear.

From cold sores to genital herpes, acting quickly helps you treat and control a herpes outbreak in the shortest amount of time. For this reason, most doctors recommend using valacyclovir in the first hours after noticing a cold sore or other herpes blister developing. Read about others here. This article is for informational purposes only and does not constitute medical advice. The information contained herein is not a substitute for and should never be relied upon for professional medical advice.

Always talk to your doctor about the risks and benefits of any treatment. Insider tips, early access and more. What We Treat. Sexual health. Mental Health.