Celexa (Citalopram) has been used in Europe since the late 1980s, and since its introduction in the U.S. market in 1998 it has made steady inroads into the SSRI market, largely because it has the reputation of being unusually well tolerated.

The latest member of the “controlled-release club” is GlaxoSmithKline, with its Paxil CR. While cynics may believe that CR launches are simply efforts to prolong patent-lives and therefore profits, the reality is that CR formulations are generally better tolerated and easier to dose.

Dr. O’Reardon, I’d like to pick your mind about your approach to treatment resistant depression. First of all, how do you define it?

Dr. Richard Naimark, a psychiatrist in private practice at Chestnut Hill Counseling in Dover, New Hampshire, relates a tidbit that tempers TCR’s fairly lukewarm review of Paxil CR.