Phenothiazine, abbreviated PTZ, is an organic compound that has the formula S(C6H4)2NH and is related to the thiazine-class of heterocyclic compounds. Derivatives of phenothiazine are highly bioactive and have widespread use and rich history.
Parkinsonism is a clinical syndrome characterized by tremor, bradykinesia, rigidity, and postural instability. These are the four motor symptoms found in Parkinson's disease (PD) – after which it is named – dementia with Lewy bodies (DLB), Parkinson's disease dementia (PDD), and many other conditions. This set of symptoms occurs in a wide range of conditions and may have many causes, including neurodegenerative conditions, drugs, toxins, metabolic diseases, and neurological conditions other than PD.
Trifluoperazine, marketed under the brand name Stelazine among others, is a typical antipsychotic primarily used to treat schizophrenia. It may also be used short term in those with generalized anxiety disorder but is less preferred to benzodiazepines. It is of the phenothiazine chemical class. It was approved for medical use in the United States in 1959.
Chlorpromazine (CPZ), marketed under the brand names Thorazine and Largactil among others, is an antipsychotic medication. It is primarily used to treat psychotic disorders such as schizophrenia. Other uses include the treatment of bipolar disorder, severe behavioral problems in children including those with attention deficit hyperactivity disorder, nausea and vomiting, anxiety before surgery, and hiccups that do not improve following other measures. It can be given orally, by intramuscular injection, or intravenously.
Thioridazine is a first generation antipsychotic drug belonging to the phenothiazine drug group and was previously widely used in the treatment of schizophrenia and psychosis. The branded product was withdrawn worldwide in 2005 because it caused severe cardiac arrhythmias. However, generic versions are still available in the US.
Acepromazine, acetopromazine, or acetylpromazine is a phenothiazine derivative antipsychotic drug. It was used in humans during the 1950s as an antipsychotic, but is now almost exclusively used on animals as a sedative and antiemetic. A closely related analogue, chlorpromazine, is still used in humans.
Cabergoline, sold under the brand name Dostinex among others, is a dopaminergic medication used in the treatment of high prolactin levels, prolactinomas, Parkinson's disease, and for other indications. It is taken by mouth.
Profenamine is a phenothiazine derivative used as an antiparkinsonian agent that has anticholinergic, antihistamine, and antiadrenergic actions. It is also used in the alleviation of the extrapyramidal syndrome induced by drugs such as other phenothiazine compounds, but, like other compounds with antimuscarinic properties, is of no value against tardive dyskinesia.
Propiomazine, sold under the brand name Propavan among others, is an antihistamine which is used to treat insomnia and to produce sedation and relieve anxiety before or during surgery or other procedures and in combination with analgesics as well as during labor. Propiomazine is a phenothiazine, but is not used therapeutically as a neuroleptic because it does not block dopamine receptors well.
Piribedil (trade names Pronoran, Trivastal Retard, Trastal, Trivastan, Clarium and others) is an antiparkinsonian agent and piperazine derivative which acts as a D2 and D3 receptor agonist. It also has α2-adrenergic antagonist properties.
Metopimazine, sold under the brand names Vogalen and Vogalene, is an antiemetic of the phenothiazine group which is used to treat nausea and vomiting. It is marketed in Europe, Canada, and South America. As of August 2020, metopimazine has been repurposed and is additionally under development for use in the United States for the treatment of gastroparesis.
Alimemazine (INN), also known as trimeprazine,, commonly provided as a tartrate salt, is a phenothiazine derivative that is used as an antipruritic. It also acts as a sedative, hypnotic, and antiemetic for prevention of motion sickness. Although it is structurally related to drugs such as chlorpromazine, it is not used as an antipsychotic. In the Russian Federation, it is marketed under the brand name Teraligen for the treatment of anxiety disorders, organic mood disorders, sleep disturbances, personality disorders accompanied by asthenia and depression, somatoform autonomic dysfunction and various neuroses.
Tybamate is an anxiolytic of the carbamate family. It is a prodrug for meprobamate in the same way as the better known drug carisoprodol. It has liver enzyme inducing effects similar to those of phenobarbital but much weaker.
Dacemazine (INN, also known as Ahistan and Histantine) is a phenothiazine derivative which acts as a histamine antagonist at the H1 subtype. First described in 1951, it was never marketed as a drug on its own, although a combination of dacemazine and di-tert-butylnaphthalenesulfonate was sold as an antispasmodic and antitussive under the trade name Codopectyl. It was also assessed as a possible anticancer drug.
Acneiform eruptions, or acne mimicking eruptions, are a group of skin conditions characterized by small bumps resembling acne. Typically, these bumps are mostly of similar size. Some bumps may be bigger or contain fluid. Generally, blackheads and whiteheads are absent. It tends to appear suddenly, with the chest and back most frequently affected.
Chlorproethazine, sold under the brand name Neuriplege, is a drug of the phenothiazine group described as a muscle relaxant or tranquilizer which is or has been marketed in Europe as a topical cream for the treatment of muscle pain. It has been associated with photoallergic contact dermatitis.
Befiradol is an experimental drug being studied for the treatment of levodopa-induced dyskinesia. It is a potent and selective 5-HT1A receptor full agonist.
Ethacizine (ethacyzine) is a class Ic antiarrhythmic agent, related to moracizine. It is used in Russia and some other CIS countries for the treatment of severe and/or refractory ventricular and supraventricular arrhythmias, especially those accompanied by organic heart disease. It is also indicated as a treatment of refractory tachycardia associated with Wolff–Parkinson–White syndrome.
Blarcamesine is an experimental drug developed by Anavex Life Sciences.
Pecazine (INN), also known as mepazine, is a phenothiazine formerly used as a neuroleptic drug or major tranquilizer.
