Azaloxan is an antidepressant drug, developed in the 1980s but never marketed.

Artilide fumarate was developed as a drug for the treatment of cardiac arrhythmias

Oxetorone is an antimigraine drug used for the disease-modifying treatment of migraines and marketed in several European countries. It works by non-selective inhibition of serotonin receptors and antihistamine agent. The therapeutic effects of oxetorone are primarily linked to antiserotonergic and also antihistamine and anti-adrenergic properties. Antidopaminergic properties are also suspected because hyperprolactinemia and extrapyramidal reactions have been observed. Adverse effects are: hypertonia, drowsiness at the start of treatment, diarrhoea and lymphocytic colitis. Acute intoxications by oxetorone, although uncommon, are potentially severe poisonings.

Cotinine is a product formed after the chemical nicotine enters the body. Measuring cotinine in people’s blood is the most reliable way to determine exposure to nicotine for both smokers and nonsmokers exposed to environmental tobacco smoke. Cotinine is safe, non-addictive and has pharmacokinetic properties adequate for therapeutic use. Research has shown that cotinine has antipsychotic, anxiolytic, and antidepressant properties and modulates the serotonergic, cholinergic and dopaminergic systems. Cotinine behaves as a positive allosteric modulator of the nicotinic acetylcholine receptors and has anti-inflammatory effects. Cotinine is under investigation as an agent for the treatment of depression, PTSD, schizophrenia, Alzheimer's disease and Parkinson's disease.

Aminorex is an anorectic stimulant drug. Aminorex inhibits norepinephrine and dopamine transporters with IC50 of 0.33 and 0.85 uM. It was briefly available as an appetite suppressant in the 1960s in Switzerland, Germany, and Austria, but was found to cause pronounced vasoconstriction in the pulmonary vasculature, and was withdrawn from the market in 1972 due to several cases of fatal and life-threatening pulmonary hypertension. In the USA aminorex is an illegal schedule I drug.