Description General description Sold under the trade names Neurontin®, Nupentin, or Gabarone, gabapentin is an anticonvulsant drug used primarily for treatment of seizures, fibromyalgia, and neuropathic pain. This internal standard is suitable for mass spectrometry-based testing or isotope dilution methods of gabapentin in forensic analysis, clinical toxicology, pain prescription monitoring, or urine drug testing. Legal Information CERILLIANT is a registered trademark of Cerilliant Corporation Neurontin is a registered trademark of Warner-Lambert Co. Snap-N-Spike is a registered trademark of Cerilliant Corporation