Nervion 2.5 mg Tablet contains Mirogabalin Besylate, a gamma-aminobutyric acid (GABA) derivative. It acts as a selective ligand for the α₂δ subunit of voltage-gated calcium channels (VGCCs), inhibiting calcium influx and reducing neurotransmitter release in the central nervous system. This mechanism helps alleviate neuropathic pain by decreasing neuronal hyperexcitability