Antibacterial agent used primarily as a tuberculostatic. It remains the treatment of choice for tuberculosis.

Isoniazid
| Description | |
|---|---|
| isonicotinohydrazide | |
| 54-85-3 | |
| C6H7N3O | |
| HIA;INH;INAH;fsr3;GINK;Cedin;FSR 3;fsr-3;Hyzyd;In-73 | |
| For the treatment of all forms of tuberculosis in which organisms are susceptible. | |