Brand Names : Laniazid, Nydrazid, Isotamine, PMS Isoniazid, INH
Precautions While Using This Medicine
It is very important that your doctor check your progress at
regular visits. Also, check with your doctor immediately if blurred vision
or loss of vision, with or without eye pain, occurs during treatment
Your doctor may want you to have your eyes checked by an ophthalmologist (eye
If your symptoms do not improve within 2 to 3 weeks, or if they become
worse, check with your doctor.
Certain foods such as cheese (Swiss or Cheshire) or fish (tuna, skipjack,
or Sardinella) may rarely cause reactions in some patients taking isoniazid.
Check with your doctor if redness or itching of the skin, hot feeling, fast
or pounding heartbeat, sweating, chills or clammy feeling, headache, or lightheadedness
occurs while you are taking this medicine.
Liver problems may be more likely to occur if you drink alcoholic beverages
regularly while you are taking this medicine. Also, the regular use of alcohol
may keep this medicine from working properly. Therefore, you should strictly limit the amount of alcoholic beverages you drink while
you are taking this medicine
If this medicine causes you to feel very tired or very
weak; or causes clumsiness; unsteadiness; a loss of appetite; nausea; numbness,
tingling, burning, or pain in the hands and feet; or vomiting, check with
your doctor immediately
. These may be early warning signs of more serious
liver or nerve problems that could develop later.
For diabetic patients:
This medicine may cause false test results with
some urine sugar tests
. Check with your doctor before changing your
diet or the dosage of your diabetes medicine.