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What is valacyclovir? Valacyclovir is an antiviral drug. It slows the growth and spread of the herpes virus to help the body fight the infection. Valacyclovir is used to treat infections caused by herpes viruses, including genital herpes, cold sores, and shingles (herpes zoster) in adults.
You should not use Valtrex if you are allergic to valacyclovir or acyclovir (Zovirax). To make sure Valtrex is safe for you, tell your doctor if you have: kidney disease (or if you are on dialysis); HIV/AIDS, or other conditions that can weaken the immune system; or. a history of kidney transplant or bone marrow transplant.
Detailed Valacyclovir dosage information for adults and children. Includes dosages for Herpes Simplex Labialis, Herpes Simplex - Suppression, Herpes Zoster and more; plus renal, liver and dialysis adjustments.
Valacyclovir is used to treat infections caused by herpes and varicella-zoster viruses, such as genital herpes, cold sores, shingles, and chickenpox. Active against herpes viridae including herpes simplex virus types 1 (HSV-1), 2 (HSV-2), varicella-zoster virus (VZV), and cytomegalovirus.
VALTREX tablets 500 mg, cherry flavor, and Suspension Structured Vehicle USP-NF (SSV). Valacyclovir oral suspension (25 mg/mL or 50 mg/mL) should be prepared in lots of 100 mL. Instructions for Preparing Suspension at Time of Dispensing • Prepare SSV according to the USP-NF. •
Serious side effects of valacyclovir. Along with its needed effects, valacyclovir may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. Check with your doctor immediately if any of the following side effects occur while taking valacyclovir: More common side effects
Valacyclovir tablets are indicated for the treatment of herpes zoster (shingles) in immunocompetent adults. The efficacy of valacyclovir tablets when initiated more than 72 hours after the onset of rash and the efficacy and safety of valacyclovir tablets for treatment of disseminated herpes zoster have not been established.
Acyclovir is used to treat infections caused by herpes viruses, such as genital herpes, cold sores, shingles, and chicken pox. Sitavig buccal tablets are for use in treating only cold sores on the lips. Sitavig will not treat genital herpes. Acyclovir may also be used for purposes not listed in this medication guide. Warnings
Neither valacyclovir nor acyclovir metabolized by CYP enzymes. Elimination Route. Valacyclovir principally eliminated as acyclovir; 46 and 47% of an oral dose eliminated in urine and feces, respectively. Half-life. Plasma elimination half-life of acyclovir after oral administration of valacyclovir averages 2.5–3.3 hours. Special Populations
Localized Dermatomal: 800 mg orally 5 times a day for 7 to 10 days (alternative therapy; oral valacyclovir or famciclovir are preferred therapy) Extensive Cutaneous Lesion or Visceral Involvement: 10 to 15 mg/kg IV every 8 hours until clinical improvement (i.e. no new vesicle formation or improvement of signs and symptoms of visceral disease ...