Minskad plasmakoncentration av atazanavir kan bli följden av ökat pH i magsäcken om antacida, inklusive buffrade läkemedel, administreras tillsammans med REYATAZ/ ritonavir. ###>Reduced plasma concentrations of atazanavir may be the consequence of increased gastric pH if antacids, including buffered medicinal products, are administered with REYATAZ/ ritonavir.