Key takeaways
Isoniazid and moxifloxacin (Avelox) are both antibiotics used to treat infections, but they belong to different medication classes and treat different conditions. Isoniazid is an antimycobacterial agent primarily used for treating and preventing tuberculosis (TB), while moxifloxacin is a fluoroquinolone antibiotic used for various bacterial infections, including lung, skin, and sinus infections. Isoniazid is available as an oral tablet and solution, typically taken daily or a few times a week, and is often used with other TB medications to prevent resistance. Moxifloxacin is taken as an oral tablet once daily. Isoniazid can cause serious liver damage and interacts with many foods and medications, while moxifloxacin can cause tendon rupture, nerve damage, and heart rhythm problems. Both medications are available as generics, but they have different side effects and interactions. Isoniazid requires avoiding foods with tyramine and histamine, while moxifloxacin should not be taken with antacids or NSAIDs.
