Are there any problems associated with isoniazid?
The biggest problem with isoniazid is the motivation to take it, because those who are infected with TB usually have no symptoms. Isoniazid also has some side effects, and, like all antibiotics, can cause skin rashes and nausea. The main concern with taking isoniazid is that there is a small risk of the liver becoming inflamed. The risk is very small for those aged under 35 years, is approximately 1% for those aged 35 to 45 years, 1.5% to 2% for those aged 45 to 55 years, and slightly over 2% for those aged 55 years and over. It is for this reason that, if you start the medication, you need to have regular blood work to make sure that you do not run into difficulties. You should stop isoniazid if you develop nausea or feel unwell, and see your doctor, so these blood tests can be done earlier. For most people, these side effects are not a problem, and, even if they occur, they rapidly correct themselves once isoniazid is stopped. Will isoniazid always be effective? If you become infecte
