Following endoscopic confirmation of a bleeding, 2,5-5ml of liquid Seraseal / Fastact, certified for intraoperative use in humans (CE No 0653), is topically applied to the bleeding site. The delivery device consisted of a 5ml syringe containing Seraseal plugged to standard delivery catheters, either ERCP catheters or dye spraying catheters (Boston Scientific, USA) that are inserted via the working channel of the endoscope. Once the bleeding is identified at endoscopy, the delivery catheter is inserted through the endoscope and positioned toward the lesion, leaving 1-2 cm between the bleeding site and the catheter tip. Seraseal is then delivered in short spray bursts or direct shots (for 1-2 seconds) until hemostasis is confirmed. A maximum of 5ml of Seraseal is administered in each patient. Homeostatic success is determined by 5 min without bleeding at gastrointestinal site. after application of Seraseal.