May 23, 2006 — The FDA has approved a generic version of the antidepressant Lexapro (escitalopram oxalate).

The generic tablets will be available in three doses: 5 milligrams, 10 milligrams, and 20 milligrams. The drug is a selective serotonin reuptake inhibitor (SSRI), a family of drugs that also includes Prozac, Celexa, Zoloft, and Paxil.

Brand-name Lexapro — made by Forest Laboratories, Inc. — is the No. 2 antidepressant in filled prescriptions and the No. 3 antidepressant for total U.S. sales, as of February 2006, according to IMS Health Incorporated, a pharmaceutical market intelligence company.

The generic version of the drug will be made by Ivax Corp., a Miami-based subsidiary of Israel’s Teva Pharmaceutical Industries.

A Teva news release states that “Teva is currently in patent litigation concerning this product” in a U.S. district court.

The FDA has not released detailed information on generic escitalopram oxalate’s approval history and labeling.