Key takeaways
Isoniazid (Nydrazid) and Rifabutin (Mycobutin) are both antibiotics, but they are used for different purposes and belong to different drug classes. Isoniazid is an antitubercular agent primarily used to treat and prevent tuberculosis (TB), while Rifabutin is a rifamycin antibiotic used to prevent Mycobacterium avium complex (MAC) infection in people with advanced HIV. Isoniazid is available in both oral and injectable forms, whereas Rifabutin is only available as an oral capsule. Isoniazid can cause serious liver injury and nerve problems, and it interacts with many foods and medications. Rifabutin, on the other hand, can change the color of your body fluids and skin, and it also interacts with many medications, including some HIV treatments. Both medications require careful monitoring by your healthcare provider.
