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Current TB Drugs

Isoniazid (INH), 1952

MIC=0.025-0.2 mg/mL

Target: Long Chain ACP-Enoyl Fatty Acid Reductase

Toxicity: Hepatic

Ethionamide (ETA), 1956

MIC = 0.3-10 mg/mL

Target: Long Chain ACP-Enoyl Fatty Acid Reductase

Toxicity: Hepatic

p-aminosalicylic acid (PAS), 1946
MIC = 1-10 mg/mL
Target: Folate Synthesis?  Iron Transport?
Toxicity: GI, Hypersensitivity

Pyrazinamide (PZA), 1952

MIC = 6-60 mg/mL

Target: Unknown

Toxicity: Hepatic



Cycloserine, 1952
MIC = 6-25 mg/mL
Target: Dipeptide Synthetase and Alanine Racemase
Toxicity: CNS
Ethambutol (EMB), 1962
MIC = 0.95-7.5 mg/mL
Target: Synthesis of Arabinose, Arabinomannan and Lipoarabinomannan
Toxicity: Ocular

Rifampin (RMP), 1957

MIC = 0.06-0.5 mg/mL

Target: RNA Polymerase

Toxicity: Hepatic

Streptomycin, 1943

MIC = 0.25-2 mg/mL

Target: 30S Ribosomal Subunit

Toxicity: 8th Cranial Nerve

Rifapentine
Target: RNA Polymerase
Toxicity: Hepatic