EXHIBIT 23 (A) INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in Registration Statement No. 33-64451 on Form S-8 and in Registration Statements Nos. 33-61087, 333-5921, 333-18041, and 333-61993 on Form S-3 of our report dated March 26, 1999 (which expresses an unqualified opinion and includes an explanatory paragraph relating to the Company's ability to continue as a going concern) appearing in this Annual Report on Form 10-K/A of OXIS International, Inc. for the year ended December 31, 1998. DELOITTE & TOUCHE LLP Portland, Oregon April 29, 1999