Description

Isoniazid 300 mg (Isoniazid) – Effective Treatment for Tuberculosis (TB)

Isoniazid 300 mg is a prescription antitubercular medicine formulated with Isoniazid 300 mg, a first-line antibiotic widely used for the treatment and prevention of tuberculosis (TB). It works by inhibiting the synthesis of mycolic acids, essential components of the cell wall of Mycobacterium tuberculosis, thereby stopping bacterial growth and helping eliminate the infection. The medicine should only be used under the supervision of a qualified healthcare provider, as treatment duration and dosage depend on the patient’s age, body weight, medical condition, and treatment regimen.

Isoniazid 300 mg is commonly prescribed as part of combination therapy for active tuberculosis and as monotherapy for latent tuberculosis infection (LTBI) in selected patients. To reduce the risk of drug resistance, it should never be used alone for the treatment of active TB unless specifically directed by a healthcare professional.

• Key Features

1. Contains Isoniazid 300 mg per tablet
2. Prescription-only antitubercular medication
3. Oral tablet for convenient administration
4. Used for the treatment and prevention of tuberculosis (TB)
5. Often prescribed as part of combination anti-TB therapy
6. Manufactured under quality pharmaceutical standards

How to Take Isoniazid 300 mg

For the best therapeutic effect, take the tablet exactly as prescribed by your healthcare provider. It is generally recommended to swallow the tablet whole with a glass of water on an empty stomach, either 1 hour before or 2 hours after meals, unless otherwise instructed. If stomach irritation occurs, your doctor may recommend taking it with food. Do not crush, chew, or split the tablet unless advised. Complete the full prescribed course, even if symptoms improve early, to prevent treatment failure and drug resistance.

• General Dosage Reference

Medical Condition	Recommended Adult Dose
Active Tuberculosis (Combination Therapy)	300 mg once daily or as prescribed
Latent Tuberculosis Infection (LTBI)	300 mg once daily for the prescribed duration
Intermittent TB Regimens	As directed by the treating physician
Other Mycobacterial Infections	As determined by the healthcare provider

The exact dosage should always be determined by your healthcare provider based on body weight, treatment regimen, liver function, and clinical response.

Safety Information

Before starting Isoniazid 300 mg, inform your healthcare provider if you have liver disease, kidney disease, diabetes, HIV infection, alcohol dependence, peripheral neuropathy, or any known allergy to isoniazid. Women who are pregnant, planning to become pregnant, or breastfeeding should consult their physician before using this medicine. Inform your healthcare provider about all prescription medicines, over-the-counter drugs, vitamins, and herbal supplements to minimize the risk of drug interactions.

Most patients tolerate Isoniazid 300 mg well when taken as prescribed. However, some individuals may experience nausea, stomach upset, fatigue, mild rash, dizziness, or numbness and tingling in the hands or feet. Your doctor may prescribe vitamin B6 (pyridoxine) to reduce the risk of nerve-related side effects. Seek immediate medical attention if you develop symptoms of liver injury such as persistent nausea, severe abdominal pain, dark urine, yellowing of the skin or eyes, or severe allergic reactions.

Product Specifications

Specification	Information
Brand	Isoniazid 300 mg
Generic Name	Isoniazid
Active Ingredient	Isoniazid
Strength	300 mg
Dosage Form	Oral Tablet
Drug Class	Antitubercular Agent
Route of Administration	Oral
Prescription Status	Prescription Required
Storage	Store below 25°C in a dry place, protected from moisture and direct sunlight

Frequently Asked Questions

Can Isoniazid 300 mg be taken with food?

It is generally recommended to take the tablet on an empty stomach for optimal absorption unless your healthcare provider advises otherwise.

How quickly does Isoniazid 300 mg start working?

The medicine begins working after absorption, but successful tuberculosis treatment requires consistent use for several months as prescribed.

Is Isoniazid 300 mg an antibiotic?

Yes. It is an antitubercular antibiotic specifically used to treat and prevent tuberculosis caused by Mycobacterium tuberculosis.

Can I purchase Isoniazid 300 mg online?

Availability depends on your country’s regulations. A valid prescription is generally required before purchase.

What should I do if I miss a dose?

Take the missed dose as soon as you remember unless it is almost time for your next scheduled dose. Do not take two doses together. Contact your healthcare provider if you are unsure how to proceed.