Freka-Clyss® is a ready-to-use, single-use, saline-based enema. The ready-to-use solution in Freka-Clyss® is hyperosmolar. Hyperosmolar means that the salt concentration of the solution is higher than that of body fluids. This results in increased water entering the rectum after administration, significantly softening the stool. This produces a laxative effect. Areas of application Freka-Clyss® is used for constipation (obstipation) for rapid and sustainable emptying of the rectum before operations for the preparation of urological, radiological and gynecological examinations, rectoscopy