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. Potency 100 mg of barbexaclone is equivalent to 60 mg of phenobarbital. References Further reading Barbiturates Combination drugs GABAA receptor positive allosteric modulators Norepinephrine-dopamine releasing agents Stimulants Sedatives Abandoned drugs