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Related to Rifater: ethambutol, Rifinah


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).]


(ˌaɪsəʊˈnaɪəzɪd) or


(Pharmacology) a soluble colourless crystalline compound used to treat tuberculosis. Formula: C6H7N3O
[C20 isoni(cotinic acid hydr)azid(e)]


(ˌaɪ səˈnaɪ ə zɪd)

a water-soluble solid, C6H7N3O, used in the treatment of tuberculosis.
[1950–55; short for isonicotinic acid hydrazide]
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

isoniazid (INH)

n isoniazida
References in periodicals archive ?
She was asymptomatic and although she reported that her general health was good, it was only upon further questioning that she stated that she had tuberculosis for which she was taking Rifater medication; before this she had been taking Ethambutol.
Following investigations by the consultants, the patient had been told that the retinal discolouration observed was a side effect of the Rifater medication she was taking and that this should become normal over time once she has ceased taking the medication.
Rifater is a capsule containing 50 mg INH, 120 mg rifampin, and 300 mg pyrazinamide.