The use of sedation in endoscopy varies greatly in Spain. It is seldom used in gastroscopy; it is more frequent in colonoscopy, and in ERCP it is the norm. In most GIE units sedation is controlled by the endoscopist with pulse oximetry. The most commonly used drugs are benzodiazepines, on their own for gastroscopy and combined with opioids for colonoscopy and ERCP.