Flunarizine 2HCl (CAS 30484-77-6) is a small molecule classified as a non-selective calcium channel antagonist It inhibits the influx of calcium ions across cellular membranes and also exhibits histamine H1 receptor blocking activity Through modulation of calcium entry Flunarizine 2HCl is utilized in research to investigate calcium-dependent cellular processes and signaling pathways Its pharmacological profile supports studies on neurological disorders migraine mechanisms and cellular responses to altered calcium homeostasis