Drugmaler Hetero is first generic to get WHO pre-qualification approval Subject :Science and Technology Context: Drugmaker Hetero said it has received World Health Organization (WHO) prequalification approval for its generic version of Pfizer’s Covid-19 oral antiviral treatment candidate nirmatrelvir. Hetero’s combi-pack Nirmacom will contain nirmatrelvir 150 mg (2 tablets) and ritonavir 100mg (1 […]