Selective serotonin reuptake inhibitors (SSRIs) selectively inhibit the reuptake of serotonin (5-hydroxytryptamine, 5-HT) in central nervous system (CNS) synapses, thus increasing the intra-synaptic concentration of serotonin.
This is a companion discussion topic for the original article at https://patient.info/doctor/selective-serotonin-reuptake-inhibitors