Psyllium, derived from the husks of Plantago ovata seeds, is widely recognized for its role as a bulk-forming laxative. Its primary mechanism involves absorbing water in the gut, resulting in increased stool bulk and moisture, which facilitates easier and more regular bowel movements. This action directly benefits the rectum and lower gastrointestinal tract by reducing straining and discomfort during defecation. Multiple high-quality clinical studies and systematic reviews have demonstrated the efficacy of psyllium in treating chronic constipation, improving stool consistency, and alleviating symptoms of irritable bowel syndrome. Additionally, psyllium is recommended in established clinical guidelines for the management of constipation and for patients with anorectal disorders, such as hemorrhoids and anal fissures, where softening the stool reduces trauma and promotes healing. The U.S. Food and Drug Administration (FDA) recognizes psyllium as an effective over-the-counter remedy for promoting regularity. There is, therefore, robust scientific validation for the use of psyllium to support rectal health, particularly in the context of constipation management and the prevention of complications related to hard stools.