Barbexaclone is a salt compound of phenobarbital

Phenobarbital

Phenobarbital or phenobarbitone is a barbiturate, first marketed as Luminal by Friedr. Bayer et comp. It is the most widely used anticonvulsant worldwide, and the oldest still commonly used. It also has sedative and hypnotic properties but, as with other barbiturates, has been superseded by the...

 and levopropylhexedrine

Levopropylhexedrine

Levopropylhexedrine is a psychostimulant used as an anorectic in Germany. It has also been used in the anticonvulsant preparation barbexaclone in combination with phenobarbital to offset sedation. Levopropylhexedrine is the S-enantiomer of propylhexedrine. It is synthesized from d-methamphetamine....

. 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.