ertain antidepressant medications, such as Prozac, make ___ more available in certain brain regions. serotonin GABA (gamma-aminobutyric acid) endorphins acetylcholine

Antidepressant medications like Prozac primarily work by increasing the availability of serotonin in specific brain regions. They do this by inhibiting the reuptake of serotonin, allowing more of this "feel-good" neurotransmitter to remain in the synaptic space. This elevated serotonin level can lead to improved mood and a reduction in symptoms of depression and anxiety. In addition to their therapeutic effects, the role of serotonin in mood regulation has a long history, dating back to the early research on depression and neurotransmitters in the mid-20th century. This established a cornerstone for modern psychiatry, and today, the understanding of serotonin's functions continues to evolve, paving the way for new and innovative treatment approaches for mental health disorders.