Flupirtine shows functional NMDA receptor antagonism by enhancing Mg2+ block via activation of voltage independent potassium channels. Rapid communication. Kornhuber J, Bleich S, Wiltfang J, Maler M, Parsons CG J Neural Transm. 1999; 106(9-10):857-67. PMID: 10599868. Abstract CommentRecommendBookmarkWatch