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A crystalline antibacterial compound, C6H7N3O, used in the treatment of tuberculosis.

[isoni(cotinic acid), isomer of nicotinic acid (iso- + nicotinic acid) + (hydr)azid(e), one of its constituents (hydr(o)- + az(o)- + -ide).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˌaɪsəʊˈnaɪəzɪd) or


(Pharmacology) a soluble colourless crystalline compound used to treat tuberculosis. Formula: C6H7N3O
[C20 isoni(cotinic acid hydr)azid(e)]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌaɪ səˈnaɪ ə zɪd)

a water-soluble solid, C6H7N3O, used in the treatment of tuberculosis.
[1950–55; short for isonicotinic acid hydrazide]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.isoniazid - antibacterial drug (trade name Nydrazid) used to treat tuberculosis
antibacterial, antibacterial drug, bactericide - any drug that destroys bacteria or inhibits their growth
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.

isoniazid (INH)

n isoniazida
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in periodicals archive ?
bovis is through a tuberculin test and slaughter strategy, but because of the financial burden of this strategy, uncontrolled and unregistered use of antibiotics, mainly isoniazide, is frequently occurring for treatment of cattle with signs of infection.[6] Although monotherapy, mainly with isoniazid, might result in the generation of drug-resistant M.
A Cause of Status Epilepticus in Turkey: Isoniazide Intoxication.
rpoB: rapid test for rifampicin resistance, INH: isoniazide, and PZE: pyrazinamide.
Our patient was treated with a 2-month course of isoniazide 5mg/kg/d, rifampicin 10 mg/kg/d, pyrazinamide 35 mg/kg/d, and ethambutol 20 mg/d followed by rifampicin and isoniazid for a further 4 months.
For possibility of drug-resistant tuberculosis, four-drug regimen (isoniazid 75 mg, rifampicin 150 mg, pyrazinamide 400 mg, and ethambutol 300 mg; tubes tab 4 times a day for 2 months followed by isoniazide and rifampicin for 7 months) against tuberculosis was used.
Line probe assay for detection of rifampicin and isoniazide resistant tuberculosis in Pakistan.
Besides it has been proved that Isoniazide preventive therapy (IPT), when taken as prescribed is highly effective in preventing latent TB infection from progressing to clinically apparent disease.