“Dantrolene inhibited [(3)H]MK-801 binding in the presence of 100 microM NMDA with an IC(50) of 58.4 microM. … to 99.6, 343.0 and 364.6 microM in the presence of 10, 30 and 50 microM glycine, respectively, suggesting that dantrolene … glycine for binding … complex.”