Zyflo CR Coupon - Zyflo CR 600mg tablet
ZILEUTON is used to treat asthma. It helps to decrease the symptoms of asthma. Do not use for an acute asthma attack. Compare 5-lipoxygenase inhibitors.
Zyflo CR Coupon - Zyflo CR 600mg tablet

Zyflo CR Side Effects

What should I watch for?

Visit your doctor or health care professional for regular checks on your progress. Because this drug may affect liver function, you will receive regular blood tests to check your liver enzymes.

It may take a few weeks to notice the full benefit of this medicine. Tell your doctor or health care professional if your asthma symptoms do not improve. Take this medicine even when you do not have any asthma symptoms. Feeling well is a sign the medicine is working to control your asthma. Do not stop taking your medicine unless your doctor tells you to.

Talk to your doctor about what to do if you have an acute asthma attack. This medicine does not treat an acute attack. Always have your inhaled rescue medicine for asthma attacks with you.

Patients and their families should watch for new or worsening thoughts of suicide or depression. Also watch for sudden changes in feelings such as feeling anxious, agitated, panicky, irritable, hostile, aggressive, impulsive, severely restless, overly excited and hyperactive, or not being able to sleep. Any worsening of mood or thoughts of suicide or dying should be reported to your health care professional right away.


Interactions with Medications

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:


Flu-like symptoms


right upper stomach pain

unusual tiredness or weakness

yellow eyes or skin

Incidence not known

Attack, assault, or force

attempts at killing oneself


dry mouth

fear or nervousness

feeling sad or empty


irregular heartbeats


lack of appetite

loss of interest or pleasure


seeing, hearing, or feeling things that are not there

shakiness in the legs, arms, hands, or feet

shortness of breath



trembling or shaking of the hands or feet

trouble with concentrating

trouble with sleeping

unable to sleep

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common





pain or tenderness around the eyes and cheekbones

stuffy or runny nose

tightness of the chest or wheezing

troubled breathing

upset stomach

Less common

Abdominal or stomach pain

sore throat


Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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