Theophylline Anhydrous
Theophylline Anhydrous
What is Theophylline Anhydrous used for?
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 by relaxing the muscles around the airways so that they open up and you can breathe more easily. It also decreases 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.
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Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.
A product that may interact with this drug is: riociguat.
Other medications can affect the removal of theophylline from your body, which may affect how theophylline works. Examples include cimetidine, disulfiram, fluvoxamine, interferon, mexiletine, rifampin, drugs used to treat seizures (such as carbamazepine, phenytoin), St. John's wort, viloxazine, among others.
Cigarette/marijuana (cannabis) smoking decreases blood levels of this medication. Tell your doctor if you smoke or if you have recently stopped smoking.
Caffeine and alcohol can increase the side effects of this medication. Avoid drinking large amounts of beverages containing alcohol or caffeine (such as coffee, tea, colas), eating large amounts of chocolate, or taking nonprescription products that contain caffeine.
Theophylline is very similar to aminophylline and oxtriphylline. Do not use medications containing aminophylline or oxtriphylline while using theophylline.
This medication may interfere with certain lab tests (such as blood sugar, cholesterol, uric acid, dipyridamole-thallium imaging tests), possibly causing false test results. Make sure lab personnel and all your doctors know you use this drug.