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Valtrex is used to treat infections caused by herpes viruses, including genital herpes, cold sores, and shingles (herpes zoster) in adults. Valtrex is used to treat cold sores in children who are at least 12 years old, or chickenpox in children who are at least 2 years old.
red spots on the skin (not related to herpes or chickenpox); feeling weak or tired; stomach pain, bloody diarrhea, vomiting; or. swelling in your face, hands, or feet. Side effects may be more likely in adults who are 65 or older. Common valacyclovir side effects may include: nausea, stomach pain; or. headache.
Suppressive Therapy: 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 ...
Valacyclovir is an antiviral prodrug that is rapidly converted into acyclovir inside the body. Acyclovir has activity against several different viruses including herpes simplex virus types 1 (HSV-1), 2 (HSV-2), and varicella-zoster virus (VZV). These viruses cause illnesses such as cold sores, genital herpes, and shingles.
Adult Patients: Cold sores (herpes labialis): CrCl at least 50 mL/min: No adjustment recommended. CrCl 30 to 49 mL/min: 1 g orally twice a day for 1 day; the 2 doses should be administered 12 hours apart. CrCl 10 to 29 mL/min: 500 mg orally twice a day for 1 day; the 2 doses should be administered 12 hours apart.
The recommended dosage of VALTREX for the treatment of cold sores in pediatric patients aged greater than or equal to 12 years 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). Chickenpox.
pounding in the ears. puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue. redness of the skin. restlessness. seeing, hearing, or feeling things that are not there. seizures. severe mood or mental changes. shakiness and unsteady walk. shakiness in the legs, arms, hands, or feet.
rash, itching; nausea, vomiting, diarrhea; headache; or. mouth pain while using an acyclovir buccal tablet. This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. Acyclovir side effects (more detail)
Acyclovir is an antiviral drug that has activity against herpes simplex virus types 1 (HSV-1), 2 (HSV-2), and varicella-zoster virus (VZV). Acyclovir acts as a specific inhibitor of herpesvirus DNA polymerase. This is a key enzyme in the lytic phase of infection by herpesviruses to ensure the replication of the virus.
The Valacyclovir Pregnancy Registry documented outcomes of 111 exposures to this drug during pregnancy (28 with earliest exposure in the first trimester, 31 in the second trimester, and 52 in the third trimester); the prevalence of major birth defects with first trimester and any trimester exposures to valacyclovir was 4.5% and 3.9%, respectively.