Efficacy of Small Bowel Preparation in Capsule Endoscopy

Inclusion Criteria: * Age \>= 18 years old. * Patients who have an indication for video-capsule endoscopy exploration for unexplained gastrointestinal bleeding associated with anaemia (man : haemoglobin \<13 g/dl and woman haemoglobin \<12g/dl) * Less than one year Endoscopic assessment by colonoscopy and gastroscopy * Not participated to an another clinic study. * Written consent. Exclusion Criteria: * Age\<18 years old. * General physical health deterioration such as dehydration or cardiac insufficiency. * Clinical or radiological suspicion of digestive stenosis. * Oral iron taking in the 4 days before video-capsule exploration. * Functional or organic disorders of the gulp * Pregnant women. * Sensibility known about the polyethylene glycol. * No signed consent.