Nuvigil launch brings up more questions about whether new isomers or metabolites of existing drugs are better than the original
July 2009
The recent Nuvigil launch brings up more questions about whether new isomers or metabolites of existing drugs are better than the original.
These "follow-on" drugs are the latest trend for drug companies looking to replace drugs with expiring patents.
But these new versions usually don't offer much improvement.
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