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Theo-Dur also known as Theophylline is used to treat lung diseases such as asthma and COPD (bronchitis, emphysema). It must be used regularly to prevent wheezing and shortness of breath. This medication belongs to a class of drugs known as xanthines. It works in the airways by relaxing muscles, opening breathing passages, and decreasing the lungs' response to irritants. Controlling symptoms of breathing problems can decrease time lost from work or school. This medication must be used regularly to be effective. It does not work right away and should not be used to relieve sudden breathing problems. If sudden shortness of breath occurs, use your quick-relief inhaler as prescribed.
Always read the patient information and instructions carefully before using this medication.
Make sure to tell your doctor and pharmacist:
Also be aware that:
Common side-effects may include but are not limited to:
Contact your doctor if you experience any of the following side-effects:
Q: What special dietary instructions should I follow?
A: Drinking or eating foods high in caffeine, like coffee, tea, cocoa, and chocolate, may increase the side effects caused by theophylline. Avoid large amounts of these substances while you are taking theophylline.
Q: What should I do if I forget a dose?
A: Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one. If you become severely short of breath, call your doctor.