Physiological and subjective effects of placebo- versus cocaine-priming are depicted. Findings indicate significant cocaine-priming effects (ps < .01) on (A) heart rate; (B) systolic blood pressure (BP); (C) oxygen saturation; (D) want drug again; and (E) Stimulant-Sensitive Adjective Rating Scale (SSARS) total score. Further, a significant NAC by priming interaction, F(1,11) = 10.30, p < .01, indicated that NAC attenuated the cocaine-priming effect on (F) “Lack of Control Over Use” score