Niguldipine HCl (119934-51-9) is an L-type calcium channel blocker (IC50 = 75 nM), which can also inhibit T-type calcium channels at higher concentrations (IC50 = 244 nM). Novel inhibitor of drug transport by p-glycoprotein.
1) Stengel et al. (1998), Different potencies of dihydropyridine derivatives in blocking T-type but not L-type Ca2+ channels in neuroblastoma-glioma hybrid cells; Eur. J. Pharmacol., 342 339
2) Hollt et al. (1992), Stereoisomers of calcium antagonists which differ markedly in their potencies as calcium blockers are equally effective in modulating drug transport by P-glycoprotein; Biochem. Pharmacol., 43 2601