Thiopental (Pentothal), phenobarbital, pentobarbital (Nembutal), amobarbital (Amytal), and butalbital (Fiorinal).
amobarbital, butalbital, cyclobarbital, pentobarbital, allobarbital, methylphenobarbital, phenobarbital, secobarbital , vinylbital...
Phenobarbital is probably the most common. Then you have allobarbital, amobarbital, aprobarbital, alphenal, barbital, brallobarbital. oh and brabellbartil no not really
barbiturates are not an ingredient in drugs, they are a class of drugs.
Secobarbital, pentobarbital, phenobarbital, mephobarbital, barbital, butabarbital, butalbutal, amobarbital, allobarbital, aprobarbital, and about one thousand others.

there's a TON of em...allobarbital, alphenal, amobarbital, aprobarbital, brallobarbital, butobarbital, butalbital, cyclobarbital, methylphenobarbital, mephobarbital, methohexital, pentobarbital, phenobarbital (the most common), secobarbital, talbutal, thiamylal, thiopental ("truth serum"), there's more

"Barbiturates" refers to any chemical derivative of barbituric acid, and there are more than 2,500 of those that have been shown to be psychoactive. We are not going to list them here.

The most commonly abused are amobarbital (Amytal), pentobarbital (Nembutal), and secobarbital (Seconal). A combination of amobarbital and secobarbital, called Tuinal, is also highly abused.

As far as I know Citalopram is a selective serotonin reuptake inhibitor (SSRI) not a barbiturate.
Barbiturates = Allobarbital (Asmac, Cibalgine, Dial, Somnocodal); Amobarbital/Amylobarbitone (Anytal); Aprobarbital (Aluratec, Amobarbital, Amylbarbitone, Amytal, Aprobarbital, Brevital, Busodium, Butabarbital, Butisol, Mebaral, Mephobarbital, Metharbital, Methohexital, Nembutal,Pentobarbital, Pentothal, Pentothal, Phenobarbitone, Quinalbarbitone, Secobarbital, Seconal, Sodium Pentothal, Talbutal, Thiamylal, Thiopental); Barbexaclone (Maliasin); Barbital/Barbitone (Barbital, Calmine, Neurinase, Peralga, Plexonal, Veramon, Veronal); Butabarbital (Butisol); Butalbital; Butobarbital (Soneryl); Cyclobarbital/Cyclobarbitol/Cyclobarbitone; Ethallobarbital; Heptabarbital; Hexobarbital; Metharbital (Gemonil); Methohexital (Brevital); Methylphenobarbital/Mephobarbital (Mebaral, Prominal); Pentobarbital (Nembutal); Phenobarbital/Phenobarbitone (Luminal); Proxibarbal; Reposal; Secobarbital (Seconal, Tuinal); [Sodium] Thiopental (Sodium Pentothal); Talbutal (Lotusate); Thiobarbital; Vinbarbital (Sonuctane); Vinylbital/Butylvinyl


(list list is to the best of my google scholar abilities)