See the DrugPatentWatch profile for Valtrex
The generic name for Valtrex is valacyclovir [1].
What is valacyclovir used for?
Valacyclovir is used to treat shingles (herpes zoster), genital herpes, and cold sores [1]. It is also prescribed to prevent outbreaks of genital herpes in individuals who have had the condition before [1].
How does valacyclovir work?
Valacyclovir is an antiviral medication that works by stopping the growth of the virus [1]. It is converted to acyclovir in the body, which then interferes with viral DNA replication [2].
When does valacyclovir go generic?
Valacyclovir became available as a generic medication in 2012 [3]. This means that the patent protection for the brand-name Valtrex has expired, allowing other companies to produce and sell generic versions of the drug [3].
Who makes generic valacyclovir?
Multiple pharmaceutical companies manufacture generic valacyclovir. These include manufacturers such as Teva Pharmaceuticals, Aurobindo Pharma, and others [4].
How does valacyclovir compare to acyclovir?
Valacyclovir is a prodrug of acyclovir, meaning it is converted into acyclovir in the body [2]. Valacyclovir has better oral bioavailability than acyclovir, which means more of the drug is absorbed into the bloodstream when taken orally [2]. This often allows for less frequent dosing compared to acyclovir [2].
What are the side effects of valacyclovir?
Common side effects of valacyclovir can include headache, nausea, dizziness, and stomach pain [1]. Serious side effects are rare but can include kidney problems, mental or mood changes, and signs of a severe allergic reaction [1].
Where can I find information on valacyclovir patents?
Information regarding patents for valacyclovir and other medications can be found on resources such as DrugPatentWatch.com [5].
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Sources
1. https://www.drugs.com/valtrex.html
2. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC161553/
3. https://www.drugpatentwatch.com/drugs/valacyclovir/
4. https://www.goodrx.com/valacyclovir
5. https://www.drugpatentwatch.com/