Valaciclovir, also spelled valacyclovir, is an antiviral drug used in the management of herpes simplex, herpes zoster (shingles), and herpes B. It is a prodrug, which is converted to aciclovir in a persons body. Common adverse drug reactions (≥1% of patients) associated with valaciclovir therapy are the same as for aciclovir, its active metabolite, and include: nausea, vomiting, diarrhea and headache. Infrequent adverse effects (0.1–1% of patients) include: agitation, vertigo, confusion, dizziness, edema, arthralgia, sore throat, constipation, abdominal pain, rash, weakness and/or renal impairment. Rare adverse effects ( Valaciclovir belongs to a family of molecules first described and patented by Paolo Cornaglia Ferraris in 1982 (patents EP0077460 A2, CA1258149A1, DE3273785D1, EP0077460A3, EP0077460B1, US4567182). Valaciclovir is a prodrug, an esterified version of aciclovir that has greater oral bioavailability (about 55%) than aciclovir (10–20%). It is converted by esterases to the active drug aciclovir, as well as the amino acid valine, via hepatic first-pass metabolism. 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. Valacyclovir 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. Valacyclovir will not cure herpes and will not prevent you from spreading the virus to other people. However, this medicine can lessen the symptoms of an infection. Before taking valacyclovir, tell your doctor if you have HIV/AIDS, a weak immune system, kidney disease (or if you are on dialysis), or if you have had a kidney or bone marrow transplant. Valacyclovir can be harmful to the kidneys, and these effects are increased when it is used together with other medicines that can harm the kidneys. Cialis dose for bph Doxycycline availability Fluconazole nasal spray Find patient medical information for Valacyclovir Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Valacyclovir oral tablet is a prescription medication used to treat or prevent. Valacyclovir is available as a brand. 500 mg, 1 g; Brand. Name of the medicinal product. Valtrex® 500 mg film-coated tablets. 2. Qualitative and quantitative composition. Each tablet contains valaciclovir. Valacyclovir has the highest efficacy against Herpes Simplex Virus infections and to some extent Varicella Zoster Virus infections. However, it will not work against other viral infections (HIV, HPV, Influenza), bacterial or fungal infections. Since cold sores are caused due to a virus, an anti-viral agent like Valacyclovir is effective in its treatment. Famciclovir and Valacyclovir are different medicines. Famciclovir is an inactive form of 'penciclovir' whereas Valacyclovir is an inactive form of 'Acyclovir'. Cold sores are caused by herpes simplex virus and occur as groups of painful, fluid-filled blisters. It can be taken when the first symptoms (such as burning or itching) appear. Both of them can be used to treat adult patients with Herpes Labialis (Cold Sores), Genital Herpes and Herpes Zoster (Shingles). Expiry date is a date, generally in MM/YYYY mentioned on the back of the blister. You should not use the medicine after the due date. Expired medicines are less effective or risky due to a change in chemical composition or a decrease in strength. Valacyclovir is the inactive form of Acyclovir and is converted into Acyclovir in the body. It comes in the form of a tablet you take by mouth. Valacyclovir is available as a brand-name drug called Valtrex. Generic drugs usually cost less than the brand-name version. In some cases, they may not be available in every strength or form as the brand-name drug. This drug may be used as part of a combination therapy. This means you may need to take it with other medications. Valacyclovir is used to treat viral infections caused by a group of viruses called herpes simplex viruses. These infections include oral and genital herpes, shingles, and chickenpox. Valacyclovir 1 mg Valacyclovir Uses, Dosage, Side Effects -, Valacyclovir Side Effects, Dosage, Uses, and More Cialis who makes it Valacyclovir 500 mg-ROX. oval, white. You may report side effects to FDA at 1-800-FDA-1088. eMedicineHealth does not provide medical advice. Valacyclovir - eMedicineHealth. Valtrex Tablets 500mg - Summary of Product Characteristics SmPC.. How Long Does Valacyclovir Valtrex Take to Work? - Hims. Unfortunately our full catalog may not be displayed in your state. If you contact our Customer Support by one of the methods below, we will be able to assist you in. Valtrex is the hydrochloride salt of valacyclovir and is offered in 250 mg, 500 mg, and 1 g tablets, primarily indicated for the treatment of HSV and VZV infections. Valacyclovir, Tablet, 1000 mg, Oral, Sivem Pharmaceuticals Ulc, 2015-10-14, Not applicable, Canada Canada. Valtrex, Tablet, film coated, 500 mg/1, Oral.