CHLORAL BETAINE, a chemical complex of chloral hydrate and betaine, is a nonbarbiturate sedative and hypnotic. It is indicated for sleep induction, preoperative sedation, and daytime sedation. CHLORAL BETAINE is converted to chloral hydrate in the body and its action on the central nervous system is identical with that of chloral hydrate.

Chlorprothixene (Taractan, Tarasan, Truxal) is a thioxanthine derivative developed by Lundbeck for the treatment of psychotic disorders. The drug exerts its activity by binding to and inhibiting serotonin receptors, dopamine receptors, muscarinic acetylcholine receptor, histamine H1 receptor and alpha1-adrenergic receptor.

Mephenoxalone is an oxazolidinone compound. It is a skeletal muscle relaxant as well as anxiolytic. Mephenoxalone is indicated for the treatment of muscle spasms.

Mebutamate (Capla, Dormate) is a biscarbamate drug that has anxiolytic, sedative, and antihypertensive effects. It is marketed under many trade names, including Capla and Dormate. Its preparation was reported in a 1959 US patent to Carter Products. It is less well known that mebutamate is also hypnotic. In a 1967 study, L. Tetreault, P. Richer, and J. M. Bordeleau in Montreal found that, at a dose of 600 mg, mebutamate has hypnotic properties that “affect the duration and quality of sleep induction, and the duration and quality of sleep, without disturbing the state of the subject upon awakening and during the morning.” A higher dose (900 mg) did not change the overall effect, which was “consistently between that of secobarbital at 200 mg and 100 mg.” The authors did not observe any significant side effects. Mebutamate is one of many GABAergic drugs which act via allosteric agonism of the GABAA receptor at the β-subreceptor similar to barbiturates. In contrast, benzodiazepines act at the α-subreceptor. As such, carbamates and barbiturates, possess analgesic properties which the benzodiazepine class of drugs does not.

Acetophenazine (Tindal) is an antipsychotic drug of moderate-potency. Used in the treatment of disorganized and psychotic thinking. Acetophenazine (Tindal) is also used to help treat false perceptions (e.g. hallucinations or delusions). Acetophenazine acts as an antagonist of dopaminergic D2 receptors in the brain. Acetophenazine exhibited modest androgen receptor binding and antiandrogen activity.

Propiomazine is a typical antipsychotic, blocking H1 receptors and is primarily indicated in conditions Insomnia. Propiomazine was also used under brand name largon for the relief of restlessness and apprehension, preoperatively or during surgery. In addition largon was used as an adjunct to analgesics for the relief of restlessness and apprehension during labor. But this drug was discontinued.

EMYLCAMATE (STRIATRAN®), the carbamate ester of the tertiary alcohol methylpentanol, is a tranquilizing and muscle relaxant agent used for the treatment of anxiety and tension.

PROTHIPENDYL is a neuroleptic azaphenothiazine used to treat anxiety and agitation in psychotic syndromes. It also shows strong antihistamine and anti-emetic actions.

CAPTODIAME, also known as captodiamine, is a diphenylmethane derivative. It is a 5-HT2c receptor antagonist and agonist at sigma-1 and D3 dopamine receptors. It is an antihistamine which is used as a sedative and anxiolytic. CAPTODIAME is probably useful in preventing benzodiazepine withdrawal syndrome.

Glutethimide is a GABA agonist that was introduced by Ciba in 1954 as a safe alternative to barbiturates to treat insomnia. Before long, however, it had become clear that glutethimide was just as likely to cause addiction and caused similarly severe withdrawal symptoms. Glutethimide was discontinued in the US by manufacturers in 1993. Current production levels in the United States point to it only being used in small-scale research.