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Isonex 100mg Tablet

Pfizer Ltd

Composition for Isonex 100mg Tablet

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Primarily used for

We do not sell this product at present

Medicine Overview of Isonex Tablet


Uses of Isonex Tablet

Isonex 100mg Tablet is used in the treatment of tuberculosis
It is also used to treat inactive (latent) TB .

Isonex Tablet side effects


Peripheral neuropathy (tingling and numbness of feet and hand), Increased liver enzymes, Hepatitis (viral infection of liver), Jaundice.


How to use Isonex Tablet

Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. Isonex 100mg Tablet is to be taken empty stomach.
Avoid Isonex 100mg Tablet with tyramine-rich food such as cheese, smoked fish, meats and some types of beer.

How Isonex Tablet works

Isonex 100mg Tablet is an antibiotic. It works by killing the bacteria that causes tuberculosis.

In Depth Information on Isonex Tablet

Expert advice for Isonex Tablet

  • Take it on an empty stomach (if it upsets your stomach, take it with food).
  • Take it as and when prescribed (in case you skip a dose, do not take two doses at one time).
  • In order to kill the TB bacteria and cure the disease completely, you will have to take this medicine for 6 to 12 months (your doctor will the precise duration for which you will take the medicine).
  • You need to take vitamin B6 (Pyridoxine) along with Isonex. Vitamin B6 (Pyridoxine) will prevent possible numbness and tingling fingers and toes that may be caused by Isonex.
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Isonex Tablet related warnings
Special precautions for Isonex Tablet
Isonex 100mg Tablet may cause symptoms such as flushing, inc
reased heartbeat, nausea, thirst, chest pain and low blood pressure with alcohol (Disulfiram reactions).
Isonex 100mg Tablet may be unsafe to use during pregnancy.

Animal studies have shown adverse effects on the foetus, however, there are limited human studies. The benefits from use in pregnant women may be acceptable despite the risk. Please consult your doctor.
Isonex 100mg Tablet is safe to use during lactation. Human
studies have shown that either the drug does not pass into the breastmilk in significant amount or is not expected to cause toxicity to the baby.
Do not drive unless you are feeling well.

Isonex 100mg Tablet can cause fits, mental health problems and optic neuritis (inflammation of the optic nerve that may cause loss of vision.) This may affect your driving ability.
Isonex 100mg Tablet is safe to use in patients with kidney disease. No dose adjustment of Isonex 100mg Tablet is recommended.

However, talk to your doctor if you have any underlying kidney disease.
Isonex 100mg Tablet should be used with caution in patients with liver disease. Dose adjustment of Isonex 100mg Tablet may be needed. Please consult your doctor.

Use of Isonex 100mg Tablet is not recommended in patients with severe liver disease.
Severely interacts with other drugs like
Mezolam 7.5mg Injection, Zee 2mg Tablet, Clonotril 2mg Tablet, Zep 10mg Tablet

Missed Dosageuses

If you miss a dose of Isoniazid, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular schedule. Do not double the dose.

Patient Concerns

User Submitted Feedback For Isonex 100mg Tablet

Survey Participants: 7
“The following are the results of on-going survey on 1mg.com for Isonex 100mg Tablet. These results only indicate the perceptions of the website users. Please base your medical decisions only on the advice of a doctor or a registered medical professional.”

Frequently asked questions about Isonex Tablet

Frequently asked questions about Isoniazid

Isonex is an antibiotic used in the prevention and treatment of tuberculosis or TB (a serious infection caused by bacteria that affects the lungs and in certain cases other parts of the body)
Isonex is a primary antibiotic used for treatment of tuberculosis. Do not confuse it with chemotherapy or chemo drugs used for the treatment of cancer
Isonex is a bacteriostatic antibiotic. It stops or suppresses growth of tuberculosis causing bacteria by interfering with the formation of protective outer covering (cell wall) which is essential for their growth
Yes. Isonex is safe if used at prescribed doses for the prescribed duration as advised by your doctor
Isonex has very weak inhibitory activity on enzymes monoamine oxidases (MAO); however it is not used as a monoamine oxidase inhibitor (MAOI)
No. The chemical structure and mechanism of action of Isonex is different from sulfa drugs
Isonex is an inhibitor (decreases activity) of an important liver enzyme system that is responsible for the final processing and elimination of several drugs from the body
Q. Can I take isoniazid with ibuprofen/Benadryl/Nyquil/Aleve/Mucinex/amoxicillin?
There no known serious drug interactions of isoniazid with ibuprofen, paracetamol (trade name: Tylenol), naproxen (trade name: Aleve), amoxicillin or any active drug present in Nyquil or Mucinex. Please inform your doctor about all the medication you are currently taking to avoid interactions that may reduce effectiveness of any treatment or aggravate side effects
Changes in body weight (gain/loss), hair loss, diarrhea or changes in menstruation are not among the known side effects of Isonex. You may experience few of these side effects while on multi drug (including Isonex) treatment for tuberculosis
You may experience unusual tiredness, constipation or acne while on treatment with Isonex. Please inform your doctor about all the medication you are currently taking to avoid interactions that may reduce effectiveness of any treatment or aggravate side effects
Isonex has no known interaction with commonly used oral contraceptives (birth control pills). However, multidrug treatment for tuberculosis contains active drug rifampin that decreases the effectiveness of oral contraceptives and hampers birth control.

Substitutes for Isonex

No substitutes found for this medicine
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