Barbexaclone
Barbexaclone (Maliasin) is a salt compound of phenobarbital and levopropylhexedrine. It was introduced in 1983. It has been reported to be as effective as phenobarbital but better tolerated; however, as of 2004, these "promising results" had not yet been confirmed nor denied in controlled trials. 100 mg of barbexaclone is equivalent to 60 mg of phenobarbital.
References
The Treatment of Epilepsy 2nd Ed by S. D. Shorvon (Editor), David R. Fish (Editor), Emilio Perucca (Editor), W. Edwin Dodson (Editor). Published by Blackwell 2004. p. 472. ISBN 0-632-06046-8