Ispaghula husk is not to be used by patients with a sudden change in bowel habit that persists for more than 2 weeks, undiagnosed rectal bleeding and failure to defaecate following the use of a laxative.
Ispaghula husk is not to be used by patients suffering from abnormal constrictions in the gastro-intestinal tract, with diseases of the eosophagus and cardia, potential or existing intestinal blockage (ileus), paralysis of the intestine or megacolon, diabetes melitus, which is difficult to regulate.