Proxibarbital (Ipronal) is a barbiturate derivative synthesized in 1956. It has anti-anxiety properties and is, in contrast to most barbiturates, almost without hypnotic action.[1]
It was also used in the treatment of migraine headaches in a similar manner to butalbital.[2]
^Zajdel P, Kulig K, Zejc A (2008). Zejc A, Gorczyca M (eds.). Chemia leków, podręcznik dla studentów farmacji i farmaceutów [Drug chemistry, textbook for pharmacy students and pharmacists] (in Polish). Warszawa, Poland. ISBN978-83-200-3652-7.{{cite book}}: CS1 maint: location missing publisher (link)
^Sulman FG, Pfeifer Y, Tal E (December 1976). "[Migraine therapy by enzyme induction with proxibarbital]". Therapie der Gegenwart (in German). 115 (12): 2088–103. PMID14412.