Do not take Esomeprazole Actavis: If allergic to esomeprazole or any of the other ingredients of Esomeprazole Actavis (listed in Description); if allergic to other proton pump inhibitor medicines (e.g. pantoprazole, lanzoprazole, rabeprazole, omeprazole); if the patient is taking a medicine containing nelfinavir (used to treat HIV infection).