Escitalopram is the pure S-enantiomer (single isomer) of the racemic bicyclic phthalane derivative citalopram. Escitalopram oxalate is designated S-(+)-1-[3-(dimethyl-amino)propyl]-1-(p-fluorophenyl)-5-phthalancarbonitrile oxalate.
Lexapro tablets also contain the following inactive ingredients:
The film coating contains hydroxypropyl methyl cellulose, titanium dioxide, and polyethylene glycol.
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