Clinical data
AHFS/Drugs.comInternational Drug Names
Routes of
ATC code
Legal status
Legal status
  • AU: S4 (Prescription only)
  • BR: Class C1 (Other controlled substances)[1]
  • N-benzyl-3-(N-(pyridine-4-carbonyl)hydrazino)propanamide
CAS Number
PubChem CID
CompTox Dashboard (EPA)
ECHA InfoCard100.000.073 Edit this at Wikidata
Chemical and physical data
Molar mass298.346 g·mol−1
3D model (JSmol)
  • O=C(NNCCC(=O)NCc1ccccc1)c2ccncc2
  • InChI=1S/C16H18N4O2/c21-15(18-12-13-4-2-1-3-5-13)8-11-19-20-16(22)14-6-9-17-10-7-14/h1-7,9-10,19H,8,11-12H2,(H,18,21)(H,20,22) checkY

Nialamide (Niamid, Niamide, Nuredal, Surgex) is a non-selective, irreversible monoamine oxidase inhibitor (MAOI) of the hydrazine class that was used as an antidepressant.[2] It was withdrawn by Pfizer several decades ago due to the risk of hepatotoxicity.[3][4]

Side effects include agitation and insomnia, less frequently dry mouth, dizziness, blurred vision, and hypomania, and rarely leukopenia and hepatitis. As with other MAOIs, a hypertensive crisis can be triggered by co-ingestion of tyramine. It is metabolized into isoniazid, an anti-tuberculosis agent, and so is contraindicated in patients with tuberculosis. The recommended dosage range is 75 to 200 mg per day, with maintenance doses as low as 12.5 mg every other day.[5]

The antiatherogenic activity of nialamide was used to design pyridinolcarbamate.[6]

See also


  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. ^ William Andrew Publishing (1 December 2006). Pharmaceutical Manufacturing Encyclopedia (3rd ed.). Elsevier. pp. 2935–. ISBN 978-0-8155-1856-3.
  3. ^ Gad SC (26 April 2012). Safety Pharmacology in Pharmaceutical Development: Approval and Post Marketing Surveillance, Second Edition. CRC Press. pp. 138–. ISBN 978-1-4398-4567-7.
  4. ^ Shorter E (28 September 2008). Before Prozac: The Troubled History of Mood Disorders in Psychiatry: The Troubled History of Mood Disorders in Psychiatry. Oxford University Press. pp. 137–. ISBN 978-0-19-970933-5.
  5. ^ Council on Drugs (1971). AMA Drug Evaluations (Report). Chicago: American Medical Association. LCCN 75147249. Retrieved April 5, 2021.
  6. ^ Bencze WL, Hess R, DeStevens G (6 December 2012). "Hypolipidemic Agents". Progress in Drug Research / Fortschritte der Arzneimittelforschung / Progrès des recherches pharmaceutiques. Vol. 13. Springer Science & Business Media. pp. 217–92. doi:10.1007/978-3-0348-7068-9_5. ISBN 9783642661907. PMID 4982663. Retrieved 3 October 2017. ((cite book)): |journal= ignored (help)