Brallobarbital is a barbiturate developed in the 1920s. It has sedative and hypnotic properties, and was used for the treatment of insomnia. Brallobarbital was primarily sold as part of a combination product called Vesparax, composed of 150 mg secobarbital, 50 mg brallobarbital and 50 mg hydroxyzine. The long half-life of this combination of drugs tended to cause a hangover effect the next day, and Vesparax fell into disuse once newer drugs with lesser side effects had been developed.
^Lhermann J. Clinical application of a new very active hypnotic associating sodium secobarbital, calcium brallobarbital and hydroxyzine (UC-8130). Gazette Medicale de France. 1964 Mar 10;71:961-2. (French)
^Yih, T. D.; Van Rossum, J. M. (30 September 2009). "Peculiar Pharmacokinetics of Brallobarbital as a Source of Complications in Vesparax® Intoxication". Xenobiotica. 6 (6): 355–362. doi:10.3109/00498257609151647.
^Fischbach, R (February 1983). "Efficacy and safety of midazolam and vesparax in treatment of sleep disorders.". British Journal of Clinical Pharmacology. 16 (S1): 167S–171S. doi:10.1111/j.1365-2125.1983.tb02290.x.