Nervisign 300 mg contains pregabalin, an anticonvulsant medication often used to treat chronic nerve pain such as diabetic neuropathy, post-herpetic neuralgia, or fibromyalgia. It binds to the alpha‑2‑delta subunit of voltage‑gated calcium channels in the central nervous system, which reduces calcium influx into nerve endings, limiting the release of excitatory neurotransmitters like glutamate, norepinephrine, and substance P. By dampening these pain signals, it lessens pain perception and helps restore nerve‑mediated balance. Taken regularly under medical supervision, it may take several days to weeks to provide full relief.