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  • Updated 07.25.2021
  • Released 08.18.2003
  • Expires For CME 07.25.2024



Historical note and terminology

Citalopram is a selective serotonin-reuptake inhibitor. Serotonin, or 5-hydroxytryptamine, was discovered in 1948 (19), and since then has played an increasing part in the understanding of human diseases, particularly those involving the nervous system. Fluoxetine, the first drug of this category, was introduced in 1988, and citalopram came a decade later. Escitalopram, the therapeutically active (S)-enantiomer of citalopram, as an improved follow-up compound for the potential treatment of depression, was approved in 2002.

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