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Valtrex Manufacturer

GlaxoSmithKline or GSK for short is a pharmaceutical and biological company that is based in United Kingdom. It is a research company that covers the following fields in pharmaceutical industry:
- Anti-infection medication
- CNS (central nervous system medication)
- Respiratory system medication
- Gastro intestinal tract and metabolic medication
- Oncological medication
- Vaccines
The company also manufactures health care products like: nutrition drinks, OTC medicine.

GSK as we know it now was formed by merging of GlaxoWellcome and SmithKline Beecham in 2000. The companies histories alone start in the 19 century when in 1830 John K. Smith opened his first Pharmacy in Philadelphia, Pennsylvania USA. And in 1880 Burroughs Wellcome & Company was founded in London by American pharmacists Henry Welcome and Silas Burroughs. Nowadays the main office of GSK is in Brentford UK.

In 2007 GSK sales reached 38,4 billion dollars. These sales are based on a huge range of products amongst which are some of the world best-seller drugs like:
- Seretide
- Avandia
- Lamictal
- Valtrex
- Imigran
- Flixotide
- Paxil and others
Valtrex or Valacyclovir is an antiviral prodrug. Prodrug means that it reaches its antiviral active form through a process of metabolisation. The active metabolite of Valacyclovir is Acyclovir. Valacyclovir is proven to be more effective and potent then Acyclovir due to an increase in bioavailability for the drug.

The approval of Valtrex be FDA on December 15, 1995 has been a major step in treating cold sores, genital herpes and shingles that are the results of herpes virus infestation. Since the introduction of Valtrex its sales have been rising and in 2004 the drug achieved block-buster status selling 1,090 mln worldwide.


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