<unk>  is a barbiturate with an intermediate duration of action.<unk>  is often combined with other medications, such as paracetamol (acetaminophen) or aspirin, for the treatment of pain and headache. The various formulations combined with codeine are FDA-approved for the treatment of tension headaches.<unk>  has the same chemical formula as talbutal but a different structure—one that presents as 5-allyl-5-isobutylbarbituric acid.
Butalbital
Ephedrine
Theobromine
Butabarbital
Pseudoephedrine
Bethanechol
Clopenthixol
Guaifenesin