Theophylline is a prescription medication used to treat chronic (ongoing) lung diseases such as asthma, emphysema, and chronic bronchitis. This medication belongs to a group of drugs called methylxanthines. It works by relaxing the muscles of the airways, which opens airway passages and allows more air to get into the lungs. This action relieves wheezing, shortness of breath, and chest tightness.
Theophylline comes in a sustained-release tablet. It is usually taken once or twice daily. Take this medication on an empty stomach, unless your doctor tells you otherwise. Swallow tablets whole. Do not crush or chew theophylline sustained-release tablets.
Common side effects include nausea, headache, and insomnia.
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Uses of T-Phyl
Theophylline is a prescription medication used to treat chronic (ongoing) lung diseases such as asthma, and chronic obstructive pulmonary disease (COPD) which includes emphysema, and chronic bronchitis.
This medication may be prescribed for other uses. Ask your doctor or pharmacist for more information.
For more information on this medication choose from the list of selections below.
T-Phyl Drug Class
T-Phyl is part of the drug class:
Side Effects of T-Phyl
Common side effects include:
This is not a complete list of theophylline side effects. Ask your doctor or pharmacist for more information.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.