Esomeprazole NORMON must not be given: If patient is allergic (hypersensitive) to esomeprazole or any of the other ingredients of this medicine (see Description).
If patient is allergic to other proton pump inhibitor medicines (e.g. pantoprazole, lansoprazole, rabeprazole, omeprazole).
If patients is taking a medicine containing nelfinavir (used to treat HIV).