Pergolide is an inhibitor of voltage-gated potassium channels, including Kv1.5, and causes pulmonary vasoconstriction.
Hong Z, Smith AJ, Archer SL, Wu XC, Nelson DP, Peterson D, Johnson G, Weir EK. Pergolide is an inhibitor of voltage-gated potassium channels, including Kv1.5, and causes pulmonary vasoconstriction. Circulation. 2005 Sep 06; 112(10):1494-9.