Thieno(2,3-d)pyrimidine, 4-(2-fluorophenyl)-6-methyl-2-(1-piperazinyl)-, monohydrochloride, monohydrate
DDP225 is both a noradrenaline reuptake inhibitor and a serotonin type 3 receptor (5-HT3) antagonist. Noradrenaline and serotonin are neurotransmitters that are known to be involved in the control of the gastrointestinal system.  The unique combination of noradrenaline reuptake inhibition and 5-HT3 antagonism in one orally delivered compound represents a novel approach to treating IBS-d and other functional GI diseases. Dynogen licensed preclinical and clinical data related to DDP225 from Mitsubishi Pharma in October 2003.