ACE and delirium: The following are therefore not regarded as playing a major role as single triggers for delirium (although a remaining deliriogenic potential cannot be ruled out): ACE‐inhibitors; antibiotics, oral anticoagulants, antiparkinsonian drugs, beta‐blockers, calcium‐channel blockers, digoxin, diuretics (as general class), H2‐antihistamines, heparin, Insulin, NSAIDs, paracetamol and propofol.