Nervigesic 150 mg (pregabalin) is a prescription anticonvulsant used to ease neuropathic pain from diabetes, shingles or spinal injury, fibromyalgia-related muscle pain, and as adjunctive therapy for partial-onset seizures. Typically taken once daily with or without food, symptom relief often occurs within weeks. Common side effects include dizziness, drowsiness, dry mouth, blurred vision, weight gain, and mild swelling.