Discount Drug Mart a Chain Store Guide list of the top 100 drug chains. The early 1990s brought increased competition to the industry. Discount Drug Mart was still smaller than the Ohio drug store chains of Revco and Phar-Mor, and were being threatened by superstores Kmart, Wal-Mart, and Target Corporation. Discount Drug Mart expanded across Ohio through the 1990's. Discount Drug Mart Discount Drug Mart, Inc., is an Ohio-based drug store chain. Its first store opened in Elyria, Ohio in 1969. In 1969, Parviz Boodjeh established the first Discount Drug Mart in Elyria, Ohio. The store originally filled prescriptions, and sold toiletries, grocery,
C corporation C corporation A C corporation, under United States federal income tax law, refers to any corporation that is taxed separately from its owners. A C corporation is distinguished from an S corporation, which generally is not taxed separately. Most major companies (and many smaller companies) are treated as C corporations for U.S. federal income tax purposes. C corporations and S corporations both enjoy limited liability, but only C corporations are subject to corporate income taxation. Generally, all for-profit corporations are automatically classified as a C corporation "unless" the corporation elects the option to treat the corporation as a flow-through entity