Revefenacin is a long-term medication used to treat an ongoing lung disease, chronic obstructive pulmonary disease (COPD). It must be used regularly to reduce and prevent symptoms such as shortness of breath, cough, and wheezing. This medication belongs to a class of drugs known as anticholinergics. It works by relaxing the muscles around the airways so that they open up and you can breathe more easily. Revefenacin does not work right away and should not be used to relieve sudden breathing problems. If wheezing or sudden shortness of breath occurs, use your quick-relief inhaler as prescribed.
Runny/stuffy nose may occur. If this effect lasts or gets worse, tell your doctor or pharmacist promptly. Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Rarely, this medication may cause sudden severe worsening of breathing problems right after you use it. If this occurs, use your quick-relief inhaler and get medical help right away. Tell your doctor right away if you have any serious side effects, including: difficulty urinating, painful urination. Get medical help right away if you have any very serious side effects, including: eye pain/swelling/redness, vision changes (such as seeing rainbows around lights at night, blurred vision). A very serious allergic reaction to this product is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist. In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.
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