LANCASTER, Calif.--(BUSINESS WIRE)--Simulations Plus, Inc. (NASDAQ:SLP), a leading provider of software for pharmaceutical discovery and development, today announced that the pharmacokinetics, dynamics, and metabolism science board at a top three pharmaceutical company named its GastroPlus™ software an “application of choice.” The client also issued a purchase order for additional software licenses at several of its research sites, which expands the number of users in their existing global multi-year software license agreement that began in December 2007.