Posted by avid abulia on June 13, 2003, at 21:37:05
In reply to Re: St.JAMES: HELP! Need some DEFINITION assistance!, posted by zeugma on June 13, 2003, at 21:11:22
it is like the difference between your right and left hand.
in the case of celexa, it is a racemic mixture meaning it has both the r- and s- enantiomer present. for some reason, probably just for marketing purposes, they took the r- enantiomer out of citalopram (celexa) and marketed just the s- enantiomer by itself as a new drug, escitalopram (lexapro) because the s- enantiomer is a stronger serotonin re-uptake inhibitor in-vitro.
long and short of it--you need about twice as much celexa to get the same effect as lexapro. i believe, but am not certain, that lexapro comes in an injectable form to get higher blood levels faster, and i am not sure if celexa does or not.
~AA
poster:avid abulia
thread:233801
URL: http://www.dr-bob.org/babble/20030609/msgs/233827.html