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Old Apr 27, 2007, 11:38 AM
psisci psisci is offline
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Member Since: Oct 2006
Location: rockie mountains!
Posts: 389
Ya celexa is what is called a racemic mix of both isomers, and lexapro is just the single isomer. The only chemical difference is a more potent chemical was created, thus requiring less mgs; so 20 of celexa is about equal to 10 of lexapro. They are identical is how they interact with serotonin receptors with the exceptin of relative binding affinity.