This is a quite misguided article. The FDA does not consider the eventual cost of the drug in making its decisions. The cost isssues emerge only when payors decide whether or not to cover the drug.
I did some research on Fusilev last year. For some reason this version of the generic has good sales in Europe, but its practical (rather than theoretical) advantages over the generic seemed quite unclear to me.
Note SPPI must have gotten some temporary sales boost because of the previous shortage of the generic leucovorin:
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