Isoniazid is a generic prescription drug that’s used to treat or prevent tuberculosis (TB). Isoniazid’s cost may depend on factors such as your dosage, whether you have health insurance, and the ...

This Journal feature begins with a case vignette highlighting a common clinical problem. Evidence supporting various strategies is then presented, followed by a review of formal guidelines, when they ...

A 9-month regimen of isoniazid can prevent active tuberculosis in persons with latent tuberculosis infection. However, the regimen has been associated with poor adherence rates and with toxic effects.