approval was given for elbasvir and grazoprevir (Zepatier) to be used with or without ribavirin for treating genotype 1and 4. The single tablet drug joins Harvoni and Viekira Pak as being treatments for genotype 1 treatments that do not require interferon. Its cure rates in genotype are 94-97% while for genotype 4 it could reach 100% cure rates.