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Author: Admin | 2025-04-28
Valtrex (valacyclovir) vs. Zovirax (acyclovir): What's the difference?What is Valtrex? What is Zovirax? What are the side effects of Valtrex and Zovirax?What is the dosage for Valtrex vs. Zovirax?What supplements interact with Valtrex and Zovirax?Are Valtrex and Zovirax safe to use while pregnant or breastfeeding? Valtrex (valacyclovir) vs. Zovirax (acyclovir): What's the difference?Valtrex (valacyclovir) and Zovirax (acyclovir) are antiviral drugs used to treat infections with shingles (herpes zoster), genital herpes (herpes simplex genitalis), and cold sores (herpes labialis).Zovirax is also used to treat Epstein-Barr virus (mononucleosis).Side effects of Valtrex and Zovirax that are similar include headache, nausea, vomiting, diarrhea, and rash.Side effects of Valtrex that are different from Zovirax include abdominal pain, cold symptoms, increased liver enzymes, reduced white blood cells, joint pain, and dizziness.Side effects of Zovirax that are different from Valtrex include agitation, confusion, anemia, muscle pain, hypersensitivity reactions, seizures, agitation, confusion, anemia, hepatitis, and muscle pain. What is Valtrex? What is Zovirax? Valtrex (valacyclovir) is a type of antiviral drug called a nucleoside analog used to treat infections with shingles (herpes zoster), genital herpes (herpes simplex genitalis), and cold sores (herpes labialis). Nucleoside analogs mimic one of the building blocks of DNA and they stop the spread of the herpes virus by preventing the viral DNA replication that is necessary for viruses to multiply. Acyclovir (Zovirax) and famciclovir (Famvir) are also nucleoside analogs. Valacyclovir is called a "prodrug," in that it is not active itself but rather, it is converted to acyclovir in the body, and it is the acyclovir that is active against the viruses. (Acyclovir itself is available as a topical, oral, and intravenous medication.) Valtrex thus is active against the same viruses as acyclovir, but Valtrex has a longer duration of action than acyclovir and can be taken fewer times each day.Zovirax (acyclovir) is
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