How should I take zileuton?
Follow all directions on your prescription label and read all medication guides or instruction sheets. Use the medicine exactly as directed.
Zileuton tablets are usually taken 4 times a day at the same times each day, with or without food. If you cannot swallow a tablet whole, split it in half and take one half at a time.
Zileuton extended-release tablets are usually taken twice daily, within 1 hour after your morning and evening meals.
Swallow the extended-release tablet whole and do not crush, chew, or break it.
Your symptoms may not improve for several days or a few weeks. Keep using this medicine even after you have no symptoms (a sign that the medicine is working).
Zileuton is not a fast-acting rescue medicine for asthma attacks. Seek medical attention if your breathing problems get worse quickly, or if you think your medications are not working.
Do not change your dose or stop using asthma medication without your doctor's advice.
You will need frequent blood tests to check your liver function.
Store at room temperature away from moisture, heat, and light.