What are Atazanavir and Ritonavir Tablets used for? Home › Forums › Cancer › What are Atazanavir and Ritonavir Tablets used for? Tagged: Atazanavir and Ritonavir Tablets This topic has 0 replies, 1 voice, and was last updated 1 year, 12 months ago by magcinepharma00. You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In