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Clinical data
Trade namesPropavan, others
Other namesPropionylpromethazine; CB-1678; Wy-1359; NSC-169450
AHFS/Drugs.comMicromedex Detailed Consumer Information
Routes of
Oral, IM, IV
ATC code
Legal status
Legal status
  • BR: Class C1 (Other controlled substances)[1]
  • In general: ℞ (Prescription only)
Pharmacokinetic data
BioavailabilityOral: 33%[2]
Protein binding81%[3]
Elimination half-life9 hours[2]
  • 1-[10-(2-dimethylaminopropyl)-10H-phenothiazin-2-yl]propan-1-one
CAS Number
PubChem CID
CompTox Dashboard (EPA)
ECHA InfoCard100.006.043 Edit this at Wikidata
Chemical and physical data
Molar mass340.49 g·mol−1
3D model (JSmol)
  • O=C(c2cc1N(c3c(Sc1cc2)cccc3)CC(N(C)C)C)CC
  • InChI=1S/C20H24N2OS/c1-5-18(23)15-10-11-20-17(12-15)22(13-14(2)21(3)4)16-8-6-7-9-19(16)24-20/h6-12,14H,5,13H2,1-4H3 checkY

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.[4][additional citation(s) needed] Propiomazine is a phenothiazine,[4] but is not used therapeutically as a neuroleptic because it does not block dopamine receptors well.[citation needed]

Medical uses

Propiomazine has been used in the treatment of insomnia.

Side effects

Drowsiness is a usual side effect. Rare, serious side effects include convulsions (seizures); difficult or unusually fast breathing; fast or irregular heartbeat or pulse; fever (high); high or low blood pressure; loss of bladder control; muscle stiffness (severe); unusual increase in sweating; unusually pale skin; and unusual tiredness or weakness.[citation needed]



Propiomazine is an antagonist of the dopamine D1, D2, and D4 receptors, the serotonin 5-HT2A and 5-HT2C receptors, the muscarinic acetylcholine receptors M1, M2, M3, M4, and M5 receptors, α1-adrenergic receptor, and histamine H1 receptor.[citation needed]

The antipsychotic effect of propiomazine is thought to be due to antagonism of the dopamine D2 receptor and serotonin 5-HT2A receptor,[5] with greater activity at the 5-HT2A receptor than at the D2 receptor. This may explain the lack of extrapyramidal effects with propiomazine. Propiomazine does not appear to block dopamine within the tuberoinfundibular pathway, which may explain its lower incidence of hyperprolactinemia than with typical antipsychotics or risperidone.[additional citation(s) needed]


Propiomazine, also known as 10-(2-dimethylaminopropyl)-2-propionylphenothiazine or as propionylpromethazine, is a phenothiazine derivative[4] and is structurally related to promethazine. The compound is provided medically as the hydrochloride and maleate salts.[6][4][7]

Society and culture

Brand names

Propiomazine has been sold under the brand names Dorevan, Dorévane, Indorm, Largon, Phenoctyl, Propavan, Propial, and Serentin.[7][6]


In 2000, propiomazine continued to be marketed only in Sweden.[6]


  1. ^ Anvisa (2023-03-31). "RDC Nº 784 - Listas de Substâncias Entorpecentes, Psicotrópicas, Precursoras e Outras sob Controle Especial" [Collegiate Board Resolution No. 784 - Lists of Narcotic, Psychotropic, Precursor, and Other Substances under Special Control] (in Brazilian Portuguese). Diário Oficial da União (published 2023-04-04). Archived from the original on 2023-08-03. Retrieved 2023-08-16.
  2. ^ a b Dehlin O, Bengtsson C, Rubin B (1997). "A comparison of zopiclone and propiomazine as hypnotics in outpatients: a multicentre, double-blind, randomized, parallel-group comparison of zopiclone and propiomazine in insomniacs". Curr Med Res Opin. 13 (10): 565–72. doi:10.1185/03007999709113330. PMID 9327191.
  3. ^ "Propiomazine".
  4. ^ a b c d Morton IK, Hall JM (6 December 2012). Concise Dictionary of Pharmacological Agents: Properties and Synonyms. Springer Science & Business Media. pp. 234–. ISBN 9789401144391. OCLC 1243535030.
  5. ^ "NCI Thesaurus". Retrieved 29 February 2020.
  6. ^ a b c Swiss Pharmaceutical Society (2000). Index Nominum 2000: International Drug Directory. Taylor & Francis. pp. 887–. ISBN 978-3-88763-075-1.
  7. ^ a b Negwer M (2001). Organic-chemical Drugs and Their Synonyms: An International Survey, Volume 3 (8 ed.). Wiley-VCH. p. 1946. ISBN 978-3-527-30247-5. OCLC 50441207. Propiomazine**, Propionylpromethazine ... 9600-02 (7787-02) R Maleate (1:1) S 1678 C.B., Dorevan, Dorévane, Indorm, Phenoctyl, Propavan, Propial, Serentin, Wy-1359 U Sedative (pre-anesthetic), hypnotic ...