1 Exhibit 23 CONSENT OF INDEPENDENT AUDITORS We consent to the incorporation by reference in this Annual Report (Form 10-K) of Polydex Pharmaceuticals Limited of our report dated March 13, 1998, with respect to the consolidated financial statements of Polydex Pharmaceuticals Limited included in its 1998 Annual Report to Shareholders. Toronto, Canada Ernst & Young April 30, 1998 Chartered Accountants