RT Journal Article SR Electronic A1 Buckley, Rita T1 BK Channel Blocker Rapidly Reverses OIRD JF MD Conference Express YR 2014 FD SAGE Publications VO 14 IS 40 SP 13 OP 14 DO 10.1177/155989771440007 UL http://mdc.sagepub.com/content/14/40/13.2.abstract AB A pharmacokinetic/pharmacodynamic (PK/PD) modeling study on the effect of the BK channel blocker GAL021 found that it produced rapid reversal of opioid-induced respiratory depression (OIRD) in a population of healthy male volunteers. This article discusses a study assessing whether GAL21 stimulates breathing in OIRD and evaluated its safety in a proof-of-concept, double-blind crossover study on isohypercapnic ventilation and a subsequent double-blind exploratory study on poikilocapnic ventilation and nonrespiratory end points.