Flunarizine is a selective calcium entry blocker with calmodulin binding properties and histamine H1 / dopamine D2 blocking activity. It is not available in the US but marketed in other countries for prophylaxis of a migraine, occlusive peripheral vascular disease, the vertigo of central and peripheral origin, motion sickness and as an adjuvant in the therapy of epilepsy. The drug is also investigated for the treatment of schizophrenia.

Mosapramine (Cremin) is used to treat chronic schizophrenia in Japan. It is a potent dopamine antagonist with high affinity to the dopamine receptor subtypes 2, 3 and 4, and with moderate affinity for the 5-HT2 receptors

CV-205502 (Quinagolide, Norprolac), a small molecule, dopamine 2-receptor agonist was developed by Novartis for the treatment of prolactinoma and hyperprolactinaemia. It is is a long-acting dopamine agonist with potent D2 and weak D1 activity. Quinagolide exists as a racemate and its relevant clinical activity is mediated predominantly by the (-) enantiomer. It is typically present in the hydrochloride salt form and is marketed as oral tablets under the brand name Norprolac contained as a racemate. Quinagolide is currently available in several countries including Canada, but not approved for treatment in the United States. Owing to its dopaminergic action, the drug exerts a strong inhibitory effect on the secretion of the anterior pituitary hormone prolactin, but does not reduce normal levels of other pituitary hormones. Long-term treatment with Norprolac was found to reduce the size or limit the growth of prolactin-secreting pituitary macroadenomas. In some patients the reduction of prolactin secretion may be accompanied by short- lasting, small increases in plasma growth hormone levels, the clinical significance of which is unknown. As a specific inhibitor of prolactin secretion with a prolonged duration of action, Norprolac has been shown to be effective and suitable for once-a- day oral treatment of patients presenting with hyperprolactinaemia and its clinical manifestations such as galactorrhoea, oligomenorrhoea, amenorrhoea, infertility and reduced libido.

Itopride is a dopamine D2 receptor antagonist and inhibitor of acetylcholinesterase. It is indicated in the for the treatment of gastrointestinal symptoms caused by reduced gastrointestinal motility, such as functional non-ulcer dyspepsia (chronic gastritis), gastric fullness, rapid satiation, pain or discomfort in the upper abdomen, anorexia, heartburn, nausea, and vomiting. The drug is not approved in the USA or UK but is available in Japan and Western European countries.

Levosulpiride [RV 12309, L-sulpiride, levosulpride, Dislep® 25, Levopride®, Levopraid®] is a potent dopamine D2 receptor blocker that was originated by Ravizza Farmaceutici (now AbbVie). Levosulpiride is the levo enantiomer of sulpiride. The levo enantiomer shows better/similar pharmacological actions and lower incidence of toxic effects than both dextro as well as the racemic forms of the drug. Levosulpiride is marketed in Italy and South Korea, and is possibly available elsewhere in Europe and Asia. Levosulpiride does not appear to be available in North America. Levosulpiride is available as 25mg tablets, drops and in ampoules for parenteral administration. Generic versions of levosulpiride also appear to be available in some countries. Levosulpiride is primarily indicated in conditions like Anxiety, Depression, Gastro-esophageal reflux disease, Irritable bowel syndrome, Schizophrenia, Tourette's syndrome, dyspeptic syndrome, essential cephalgia, and can also be given in adjunctive therapy as an alternative drug of choice in Peptic ulcer, Vertigo.

Timiperone is a neuroleptic agent that was developed in Japan. Timiperone has a potent antipsychotic activity, which is comparable to other butyrophenones such as haloperidol (HAL). Timiperone has a five-eight-times higher affinity to dopamine receptors and a 15-times higher affinity to serotonin receptors than those of HAL. Clinical trials have suggested that TIM has a specific action against negative symptoms such as lack of initiative or blunted affect as well as positive symptoms such as delusions and hallucinations in schizophrenics.

Clebopride is a dopamine antagonist drug. It is used to treat functional gastrointestinal disorder such as nausea or vomiting. Unchanged parent drug was the most abundant compound in human urine. Major metabolites included the hydroxylation at benzyl group to yield carbinolamine and its further N-dealkylation product, and the piperidine ring hydroxylation/oxidation metabolite (a lactam).

Zuclopenthixol is indicated the management of the manifestations of schizophrenia and other mental illnesses with disturbances in thinking, emotional reactions and behaviour. It is also used to treat the manic phase of manic depressive illness. Zuclopenthixol, a thioxanthene derivative, has high affinity for both dopamine D1 receptors and dopamine D2 receptors. Zuclopenthixol also has high affinity for α1-adrenergic and 5-HT2 receptors. Zuclopenthixol (CLOPIXOL®) is avavilable in the form of tablets and solution for intramuscular injections.

Bromopride is a dopamine D2 receptor blocker. Bromopride exerts is a gastrointestinal prokinetic exploited clinically for the management of motor disorders of the upper gastrointestinal tract, including functional dyspepsia, gastric stasis of various origins and emesis.

Terguride (INN), also known as trans-dihydrolisuride, is a serotonin receptor antagonist and dopamine receptor agonist of the ergoline family. Terguride is approved for and used in the treatment of hyperprolactinemia. Terguride is an oral, potent antagonist of 5-HT2B and 5-HT2A (serotonin) receptors. Serotonin stimulates the proliferation of pulmonary artery smooth muscle cells and induces fibrosis in the wall of pulmonary arteries. Together, this causes vascular remodeling and narrowing of the pulmonary arteries. These changes result in increased vascular resistance and PAH. Due to the potential anti-proliferative and anti-fibrotic activity of terguride, this potential medicine could offer the hope of achieving reversal of pulmonary artery vascular remodeling and attenuation of disease progression. In May 2008, terguride was granted orphan drug status for the treatment of pulmonary arterial hypertension. In May 2010 Pfizer purchased worldwide rights for the drug.