Definition of collusion in the English dictionary The definition of collusion in the dictionary is secret agreement for a fraudulent purpose; connivance; conspiracy. Other definition of collusion is a secret agreement between opponents at law in order to obtain a judicial decision for some wrongful or improper purpose.
Citalopram (brand names: Celexa, Cipramil and others) is an antidepressant drug of the selective serotonin reuptake inhibitor (SSRI) class. It has U.S. Food and Drug Administration approval to treat major depression, which it received in 1998, and is prescribed off-label for other conditions.
Escitalopram is the (S)-stereoisomer of the earlier medication citalopram, hence the name escitalopram. Escitalopram was approved for medical use in the United States in 2002. Whether escitalopram is more effective than citalopram or merely an effort to extend a patent over a product in which it was about to expire is controversial.