Isoniazid is an antimicrobial medication used to treat tuberculosis (TB) infections. It is also used as prophylaxis for latent TB.


Isoniazid is used to treat active TB, to prevent TB from becoming active in people with latent TB infection, and to prevent TB in people with a high risk of exposure to the TB bacteria.


Isoniazid is effective in killing the TB bacteria, and can help cure TB infections when used as directed. It is also affordable and widely available, making it an important tool in the fight against TB.

Side effects:

Isoniazid can cause side effects such as nausea, vomiting, loss of appetite, headache, dizziness, and joint or muscle pain. It can also cause more serious side effects, such as liver damage, peripheral neuropathy, and allergic reactions. People taking isoniazid should be monitored for any signs of these side effects.

Medicines Contains Isoniazid