Registration Statement No. 333-00077 Filed pursuant to Rule 424(b)(3) under the Securities Act of 1933 Rider to Prospectus dated January 22, 1996 Relating to Shares being sold by Selling Stockholders U.S. BIOSCIENCE, INC. Common Stock Effective the close of business April 22, 1996, U.S. Bioscience, Inc. effected a 1-for-2 reverse stock split of its Common Stock, reducing by 50% the number of outstanding shares of Common Stock. In connection with the reverse stock split, the par value of the Common Stock was changed from $.005 per share to $.01 per share.