COVINGTON, Ky.--(BUSINESS WIRE)--Omnicare, Inc. (NYSE: OCR) (the “Company”) today announced that it intends to offer $500 million aggregate principal amount of its convertible senior subordinated notes due 2025, pursuant to a preliminary prospectus supplement filed with the Securities and Exchange Commission under the Company’s shelf registration statement. The Company intends to grant the underwriters an option to purchase an additional $75 million of convertible notes to cover over-allotments.