Escitalopram is a selective serotonin uptake inhibitor marketed by Forest Laboratories in the United States as an antidepressant under the trade name Lexapro. Elsewhere it is sold by the Danish company Lundbeck under the names Ciraplex, Sipralexa, and Seroplex. It was codeveloped by the two companies. Escitalopram is the S-isomer of the earlier Lundbeck drug citalopram (Celexa), and studies have established its superior performance over the enantiomeric mixture.
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