Atagabalin

 ( Abandoned Drugs ) 

Atagabalin (, ; developmental code name PD-0200390) is a drug developed by Pfizer and related to gabapentin, which similarly binds to the α₂δ (1 and 2). It was under development as a treatment for insomnia, but was discontinued following unsatisfactory trial results. The drug reached phase 2 for this indication prior to the discontinuation of its development.

• List of investigational insomnia drugs
• 4-Methylpregabalin
• Gabapentin enacarbil
• PD-217,014
• PD-0299685