Medium Risk (only one required, tick all that apply) Age > 60 years Haemoglobin < 110 (on admission) Co-morbidity (any clinically significant co- existing disease) Passage of melaena or presence on digital rectal examination Excessive alcohol (> 28 units/week or > 10 units in previous 24 h) NSAIDs (current or recent NSAID or aspirin) Previous gastrointestinal bleed or peptic ulcération Abnormal liver biochemistry (transaminases, alkaline phosphatase or bilirubin) Postural hypotension > 10 mmHg (sitting or standing compared with supine)