We offer Atazanavir Capsules. Atavir (Atazanavir Capsules) Dropshipper Atazanavir Sulphate is a prescription medicine used in combination with other medicines to treat people who are infected with the human immunodeficiency virus (HIV). Atavir (Atazanavir Capsules) has been studied in 48-week trials in both patients who have taken or have never taken anti-HIV medicines.