In Goodman & Gilman's The Pharmacological Basis of Therapeutics, 12e R,S-citalopram is referred to. The problem is that from what I am aware of citalopram only has one stereocentre, and hence I am forced to ask were the author having a stroke when they added the comma and really meant the racemic mixture of R and S stereoisomers?
Figure 1: Screenshot of the Relevant Page in Goodman and Gilman
Figure 2: Citalopram
(The latter has the stereocentral carbon highlighted)