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Zanamivir

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<applet load="" size="480" color="" frame="true" spin="on" Scene ="" align="right" caption="Zanamivir, better known as Relenza, ([[____]])"/>
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===Better Known as: Relenza===
===Better Known as: Relenza===
* Marketed By: GlaxoSmithKline
* Marketed By: GlaxoSmithKline

Revision as of 11:51, 12 December 2010

Zanamivir, better known as Relenza, (3b7e)

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Better Known as: Relenza

  • Marketed By: GlaxoSmithKline
  • Major Indication: Influenza Infection
  • Drug Class: Neuraminidase Inhibitor
  • Date of FDA Approval (Patent Expiration): 1999 (2016)
  • 2009 Sales:$1.1 Billion
  • Importance: It was the first neuraminidase inhibitor to be approved by the FDA, followed a few months later by Oseltamivir. Newer strains of flu virus, primarily H1N1, have developed varying levels of resistance to Oseltamivir, but a lesser extent to Zanamivir. Sales have increased dramatically since 2006 with scares of bird flu and swine flu pandemics.
  • See Pharmaceutical Drugs for more information about other drugs and diseases.

Mechanism of Action

Pharmacokinetics

Neuraminidase Inhibitor Pharmacokinetics
Parameter Zanamivir Oseltamivir
Tmax (hr) 1.25 1.5
Cmax (ng/ml) 31.6 57
Bioavailability (%) 2 75
Protein Binding (%) 10 42
T1/2 (hr) 3 3.2
AUC (ng/ml/hr) 185 204
Clearance (L/h) 54.1 18.8
Dosage (mg) 10 300
Metabolism None Hepatic

For References to Pharmacokinetic data, see: References

References


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