The best for you that your family doctor check your progress at regular appointments. Always check with your family doctor immediately if blurred vision or loss of vision, with or without eye pain, occurs during treat . Your family doctor may want you to have your eyes checked by an ophthalmologist - eye family doctor.
If your symptoms do not improve within 2 to 3 weeks, or if they become worse, check with your family doctor.
Certain foods such as cheese - Swiss or Cheshire or fish - tuna, skipjack, or Sardinella may rarely cause reactions in some diseaseds taking isoniazid. Check with your family 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 drug.
Liver problems may be more likely to occur if you drink alcoholic beverages regularly while you are taking this drug. Always the regular use of alcohol may keep this drug from help you. Therefore, you must strictly limit the amount of alcoholic beverages you drink while you are taking this drug .
If this drug 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 family doctor immediately . These may be early warning signs of more serious liver or nerve problems that could develop later.