Last edited Mon May 18, 2026, 05:54 PM - Edit history (2)
Selective Serotonin Reuptake Inhibitors (SSRIs) are a class of drugs that are typically used as antidepressants in the treatment of major depressive disorder, anxiety disorders, and other psychological conditions.
SSRIs primarily work by blocking serotonin reabsorption (reuptake) via the serotonin transporter, leading to gradual changes in brain signaling and receptor regulation, with some also interacting with sigma-1 receptors, particularly fluvoxamine, which may contribute to cognitive effects. Marketed SSRIs include six main antidepressants—citalopram, escitalopram, fluoxetine, fluvoxamine, paroxetine, and sertraline—and dapoxetine, which is indicated for premature ejaculation. Fluoxetine has been approved for veterinary use in the treatment of canine separation anxiety.
SSRIs are the most widely prescribed antidepressants in many countries.[2] In adults, they are recommended as a first-line treatment for moderate to severe depression, while for mild depression non-drug treatments are preferred unless the patient chooses medication.[3] According to the largest and most comprehensive meta analysis by Cipriani, 21 antidepressants showed all antidepressants (including SSRI's) were more effective than placebo.[4]
Medical uses[edit]
The main indication for SSRIs is major depressive disorder; however, they are frequently prescribed for anxiety disorders, such as social anxiety disorder, generalized anxiety disorder, panic disorder, obsessive–compulsive disorder, eating disorders, chronic pain, and, in some cases, for post-traumatic stress disorder. They are also frequently used to treat depersonalization disorder, although with varying results.[5]
https://en.wikipedia.org/wiki/Selective_serotonin_reuptake_inhibitor
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