isoniazid 300mg tablet
⚠️ Hepatotoxicity Risk
🤰 Pregnancy Category C
📋 Prescription Required
💊 Generic Available
Medically Reviewed
12 min read
Reviewed by
SaathiMed Expert Panel | Sep 20, 2026
What is isoniazid 300mg tablet used for?
This medicine contains Isoniazid (300mg) and is used to treat ANTI INFECTIVES. Always consult your doctor before use.
- Generic Name: Isoniazid (300mg)
- Manufacturer: Cadila Pharmaceuticals Ltd
- Form: Allopathy
- Pregnancy Category: Consult doctor
- Prescription Required: Yes
💡 Did You Know? Over 80% of the antiretroviral drugs used globally to combat AIDS are supplied by Indian pharmaceutical companies.
💊 isoniazid 300mg tablet Uses & Benefits
- Isoniazid 300mg Tablet is an antibiotic used for the treatment and prevention of tuberculosis (TB) and inactive (latent) TB (a serious infection caused by bacteria that affects the lungs and in certain cases other parts of the body).
- It works by killing the bacteria that cause tuberculosis.Isoniazid 300mg Tablet should be used in the dose and duration as advised by your doctor.
- It is to be taken on an empty stomach.
- Do not skip any doses and finish the full course of treatment even if you feel better.
- Stopping it early can result in treatment failure and increase the side effects too.
- Do not take a double dose to make up for a missed dose.
- Simply take the next dose as planned.Some common side effects of this medicine include tingling and numbness of feet and hand (peripheral neuropathy).
- Inform your doctor if you notice signs of jaundice, i.e., yellowing of eyes or skin, dark urine, stomach pain, or joint pain.
- You may also develop hepatitis (viral infection of the liver) or increased liver enzymes as side effects of this medicine.
- Please consult your doctor, as these side effects require medical attention and need dose modification.Your doctor may monitor your liver function while on treatment with this medicine.
- Avoid drinking alcohol as this may have additional adverse effects on the liver.
- Pregnant or breastfeeding women should consult their doctor before using this medicine.
📋 Drug Information
| Generic Name(s) | Isoniazid (300mg) |
| Brand Name | isoniazid 300mg tablet |
| Manufacturer | Cadila Pharmaceuticals Ltd |
| Packaging / Form | Varies by brand (Allopathy) |
| Therapeutic Class | ANTI INFECTIVES |
| Action Class | Mycolic acid inhibitors- INH |
| Route of Administration | Oral |
| Storage | Room temperature (15-30°C), away from moisture |
| Shelf Life | As per manufacturer |
💡 How to Take isoniazid 300mg tablet
Follow your doctor's prescription exactly.
⚠️ Side Effects of isoniazid 300mg tablet
- Peripheral neuropathy (tingling and numbness of feet and hand)
- Hepatitis (viral infection of liver)
- Skin rash
- Itching
- Dizziness
- Lethargy
Consult your doctor if you experience any unusual symptoms.
🛡️ Safety & Warnings
🔄 Substitutes for isoniazid 300mg tablet
View AllAlternative brands with exact same active ingredient:
-
lup inh 300mg tabletLupin Ltd ₹10.88 521.7% COSTLIER
-
isonij 300mg tabletSunij Pharma Pvt Ltd ₹11.22 541.1% COSTLIER
-
solonex tabletMacleods Pharmaceuticals Pvt Ltd ₹13.75 685.7% COSTLIER
-
isonex 300mg tabletPfizer Ltd ₹21.50 1128.6% COSTLIER
Medical Note: Always consult your doctor before switching medications.