India has access only to Tamiflu for swine flu treatment

Tamiflu (oseltamivir) and Relenza (zanamivir) are the two drugs prescribed to treat swine flu caused by the H1N1 virus. But India has access only to Tamiflu (oseltamivir), though the mode of action for both the drugs is to block the viral receptors infecting the healthy cells. 

The H1N1 virus is resistant to the drugs like amantadine, rimantadine, and other adamantanes. Both oseltamivir and zanamivir approved in 1999 by US FDA belong to a new class of neuraminidase inhibitors which are antiviral drugs to control influenza A and B viruses. The two drugs have gone through extensive clinical trials involving over 1,000 patients. Tamiflu has been successful to treat H5N1 virus (Avian Flu), is now responding positively to control H1N1 virus. 

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