RT Journal A1 Kushner R T1 PHentermine—resin or salt— there are differences-reply JF Archives of Internal Medicine JO Archives of Internal Medicine YR 1997 FD November 10 VO 157 IS 20 SP 2382 OP 2382 DO 10.1001/archinte.1997.00440410115016 UL http://dx.doi.org/10.1001/archinte.1997.00440410115016 AB Coyne is correct in pointing out that the Weintraub1 trial used phentermine resin rather than phentermine hydrochloride. This reference was an error in my commentary, and I apologize for the unintentional mistake. He is also correct in stating that the clinical significance of this difference is unknown.