Wiktionary
atagabalin
n. A drug related to gabapentin, under development for the treatment of insomnia.
Wikipedia
Atagabalin
Atagabalin (PD-0200,390) is a drug developed by Pfizer and related to gabapentin, which similarly binds to the αδ calcium channels ( 1 and 2). It was under development as a treatment for insomnia, but was discontinued following unsatisfactory trial results.