Iprazochrome is a serotonin antagonist both in vitro and in vivo. It is used in the prophylaxis of migraine and in the treatment of diabetic retinopathy.

Bamipine (trade name Soventol) is a sedating antihistamine with pronounced sedative effects. Bamipine is a pharmaceutical drug acting as an H1 antihistamine with anticholinergic properties. It is used as an antipruritic ointment. Bamipine hydrochloride has been given by mouth. Bamipine, bamipine lactate, and bamipine salicylate have all been applied topically.

Fabomotizole (also known as Afobazole) is a selective non-benzodiazepine anxiolytic which was developed in Russia and launched in 2006. The drug is used for the treatment of wide range of diseases: generalized anxious disorders, neurasthenia, adaptation disorders, sleep disorders, for alleviation of withdrawal syndrome. According to the drug label (in Russian), its action is related to the interaction with sigma-1 receptors.

Cinolazepam is a drug which is a benzodiazepine derivative. It possesses anxiolytic, anticonvulsant, sedative and skeletal muscle relaxant properties. Cinolazepam is not approved for sale in the United States or Canada. Cinolazepam binds to central benzodiazepine receptors, which interact allosterically with GABA receptors. This potentiates the effects of the inhibitory neurotransmitter GABA, increasing the inhibition of the ascending reticular activating system and blocking the cortical and limbic arousal that occurs following stimulation of the reticular pathways. Statistical analyses of objective sleep variables in men demonstrated a significant improvement of sleep maintenance after cinolazepam as reflected by an increase of sleep efficiency, decrease of wake time (during total sleep period) and number of awakenings as compared with the placebo. It is indicated for the treatment of sleep disorders of different etiologies.

Octopamine is an organic chemical closely related to norepinephrine. In many types of invertebrates it functions as a neurotransmitter. Octopamine is known to exert adrenergic effects in mammals although specific octopamine receptors have been cloned only in invertebrates. It has been shown that octopamine can stimulate alpha(2)-adrenoceptors (ARs) in Chinese hamster ovary cells transfected with human alpha(2)-ARs. Octopamine stimulates lipolysis through beta(3)-rather than beta(1)-or beta(2)-AR activation in white adipocytes from different mammalian species. Octopamine activates only beta(3)-ARs and is devoid of alpha(2)-adrenergic agonism. Thus, octopamine could be considered as an endogenous selective beta(3)-AR agonist. In humans Octopamine is a trace amine found endogenously in the human brain where it interacts with signalling of catecholamines; it is structurally similar to synephrine and tyramine, being a metabolite of the latter (via dopamine β-hydroxylase) and substrate for the synthesis of the former (via phenethanolamine N-methyltransferase[3]) while being perhaps the closest in structure to noradrenaline. Octopamine is found in the bitter orange similar to many biogenic amines related to L-tyrosine that are used as dietary supplements, this includes synephrine and hordenine. p-Octopamine HCl (Norphen) was studied in the late 1960’s and 1970’s as a drug for the treatment of hypotensive regulatory and circulatory disorders. Octopamine was used as a nootropic. All optical isomers (enantiomers) of octopamine are on the World Anti-Doping Agency (WADA) 2014 list of substances prohibited in competition.

Fosenazide (phosphabenzide, gidifen, hydiphen or hydrazide of diphenylphosphinylacetic acid) is a tranquilizer. It possesses the central N-cholinolytic, antiadrenergic and antiserotonin effects. Fosenazide is prescribed in Russia only for the treatment of alcohol withdrawal syndrome.

Laquinimod is a new orally available carboxamide derivative, which is currently developed for relapsing remitting (RR) and chronic progressive (CP) forms of multiple sclerosis (MS; RRMS or CPMS) as well as neurodegenerative diseases. The mechanism of action of laquinimod is not fully elucidated because the molecular target is not known. Treatment with laquinimod led to a significant and persistent increase in brain-derived neuroprotective factor (BDNF) serum levels compared to placebo treatment. In human studies, a decrease of pro-inflammatory and an increase of anti-inflammatory cytokines have been measured. After commercial launch the unexpected severe cardiac adverse events (AEs) such as serositis, pericarditis, and myocardial infarction were detected.

Valpromide (2-propylpentanamide) is a derivative of valproic acid. Bio-pharmacological data show several possible mechanisms of action involving an increase in GABA levels in brain as well as changes in membrane conductance on neurons. Valpromide has been shown to decrease aggressivity in stress-induced animals, to regulate anxious induced behaviours, as well as to potentiate central sedative compounds. It produces a significant increase of cognitive functions. Psychopathological experiments have shown: a wakening of personality, euphoric effects, an improvement of social behaviour, a stabilization of mood in affective disorders. Valpromide is indicated for the treatment of bipolar disorder (manic episodes). It is marketed in some Europe countries.

A naturally occurring serine derivative diazo compound with antineoplastic properties, Azaserine functions as a purine antagonist and glutamine analogue (glutamine amidotransferase inhibitor) that competitively inhibits pathways in which glutamine is metabolized. An antibiotic and antitumor agent, Azaserine was used in clinical studies as a potential antineoplastic agent. Azaserine is an inhibitor of glutamine: fructose-6-phosphate amidotransferase (GFAT), which is the rate-limiting enzyme in the hexosamine biosynthetic pathway. Azaserine is used to model pancreatic cancer in rodents.

Blonanserin is an antagonist of dopamine and serotonin receptors developed for the treatment of schizophrenia. Blonanserin was approved in Japan and Korea, but was never marketed in the USA.