Barclay Propriety Rx Numbers from Mar 4, 2015: Proprietary New Treatment Start data from AlphaImpactRx shows that Harvoni has a dominant 63% share across all patient genotypes, with Viekira Pak having captured a 15% share. ------ Harvoni captured 68-75% of Genotype 1 patients versus 14-21% for Viekira Pak during the last 3 weeks in January.