They had been all but replaced with the Benzodiazepines. Barbiturates Use a background of Demise. The dose response curve is steep. The leisure dose isn't as well far from the coma/Dying dose.Talamh an Éisc Sep 30, 2012 #19 I realize people who have been prescribed phenobarbital for stress, epilepsy (this is usually what phenobarbital is prescribe