The source uses an old medical example, شرب السقمونيا مسهل للصفراء, describing the ingestion of scammony as facilitating the expulsion of bile. This is a historical example in the logic text, not a contemporary therapeutic recommendation.
Its logical function is to illustrate moving from repeated observations to a general statement about an effect. Knowing the name of a substance is conception; encountering a single effect is observation; seeking a general rule from repeated observations is experience.
Classification as a textbook example does not establish modern scientific or clinical validity of the underlying medical claim.