Active Ingredient

Isoniazid

Isoniazid is a medication primarily used to prevent and treat tuberculosis, a bacterial infection that mainly affects the lungs. It is an important part of the standard treatment regimen for tuberculosis.

By targeting the bacteria causing the infection, isoniazid helps in controlling the spread and severity of the disease.

Douglas C. Goldberg, MD
Written By Douglas C. Goldberg, MD
Philip Schein, MD
Reviewed By Philip Schein, MD
Last Updated

Available Isoniazid Brands

Isoniazid

Strengths 100 mg, 300mg

from $76.00 View Product

Isoniazid Uses

Isoniazid is mainly used in the treatment and prevention of tuberculosis.

  • Treatment of active tuberculosis infection
  • Prevention of tuberculosis in individuals exposed to the bacteria
  • Part of combination therapy for tuberculosis
  • Management of latent tuberculosis infection

How Isoniazid Works

Isoniazid works by inhibiting the synthesis of mycolic acids, which are essential components of the bacterial cell wall in Mycobacterium tuberculosis.

This action weakens the bacteria, preventing them from growing and multiplying effectively.

As a result, it helps the immune system to control and eliminate the infection.

Common side effects of Isoniazid

Not everyone experiences side effects with isoniazid, and many are mild and temporary.

  • Nausea
  • Vomiting
  • Loss of appetite
  • Fatigue
  • Numbness or tingling in hands and feet
  • Rash

If you experience serious or persistent symptoms, contact your healthcare provider.

Frequently Asked Questions

What is isoniazid used for?

Isoniazid is used for the treatment and prevention of tuberculosis, a bacterial infection that mainly affects the lungs.

How does isoniazid work?

Isoniazid works by inhibiting the synthesis of essential components of the bacterial cell wall, thus preventing the bacteria from growing and multiplying.

Are there any common side effects of isoniazid?

Yes, common side effects include nausea, vomiting, fatigue, and numbness in the hands and feet.

Can I drink alcohol while taking isoniazid?

It is advisable to avoid alcohol as it may increase the risk of liver damage while taking isoniazid.

How should I take isoniazid?

Isoniazid is usually taken on an empty stomach, but follow your doctor’s instructions for the best results.

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