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Primary Uses



Isoniazid is used with other medications to treat active tuberculosis (TB) infections. It is
also used alone to prevent active TB infections in people who may be infected with the
bacteria (people with positive TB skin test).

Side Effects

The common side effects are numbness and tingling in the extremities, hepatitis, nausea,
vomiting, upset stomach, fever or rash.



Preventive treatment with isoniazid can be undertaken safely during pregnancy but incombination with pyridoxine (vitamin B6).


Research has shown its often release in breast milk, therefore, its use is avoided in lactatingfemales.


Please avoid consuming alcohol when taking this medicine.


Check with your doctor immediately if blurred vision or loss of vision, with or withouteye pain, occurs during treatment. Your doctor may want you to have your eyeschecked by an ophthalmologist (eye doctor).


It is not recommended in patients with isoniazid associated hepatic injury or other severe adverse reactions with isoniazid.


What are the uses of Isoniazid?

This medication is used for treatment of infections such as tuberculosis, disease affecting lungs. It cannot be used to treat viral infections such as flu and common cold.

How to take Isoniazid?

Use it as prescribed by your healthcare provider. It may be used in combination with other medicines to treat tuberculosis. The dosage of this medicine is dependent on the age, condition and its severity.

How to store Isoniazid?

Please store at room temperature (18-25 Celsius). Keep medicine away from children, excessive light, and moisture. Do not flush medicines down the toilet.

Does Isoniazid have any effect on pregnancy and lactation?

This medicine should only be used during pregnancy if clearly needed and no safer alternate is available. This medicine passes into breast milk and is unlikely to harm the baby. Consult your health care provider before use of this medicine.


Dawaai's intention is to make sure that it's consumers get information that is accurate, reviewed by an expert and error-free. However, the information mentioned here should not be used as a replacement for the advice of a qualified physician. The information given here is for informational purposes only, which may not cover all possible precautions, side effects, contraindications or drug interactions. Consult your doctor and discuss your queries related to any medicine or disease.


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