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Theophylline Extend Release

Theophylline Extend Release

Theophylline Extend Release

Theophylline oral tablet is only available as a generic drug. Theophylline is used to treat the symptoms of asthma or other lung conditions that block your airways, such as emphysema or chronic bronchitis. It's used for long-term treatment.

What is this medication and its most common uses?

Theophylline ER is a medicine used to treat asthma and airway narrowing associated with long-term asthma or other lung problems, such as chronic bronchitis (long-term inflammation of the air passages within the lungs) and emphysema (lung disease that causes shortness of breath). Theophylline ER is an extended release medication (a type of tablet that releases medicine into your body throughout the day).

How does this medication work?

Theophylline ER works by relaxing muscles in your airways and by decreasing sensitivity.

This medication is not used for emergency or immediate treatment of symptoms of asthma. Always have a short-acting rescue inhaler (such as albuterol) to treat sudden symptoms.

What are the beneficial effects of this medication and when should I begin to have results?

What: Theophylline ER has been shown to reduce the frequency and severity of symptoms, including night-time asthma attacks and difficulty breathing. It has also been shown to reduce the need for other asthma medications.

When: Everyone responds differently to treatment, so try to be patient and follow your healthcare provider’s directions. It is important that you take theophylline ER exactly as your healthcare provider has prescribed.

How do I know it is working?

You may feel an improvement in your breathing once you begin taking theophylline ER. Your healthcare provider may perform tests to check your lung function and ask you questions to assess how well your symptoms are controlled.


  • Abdominal or stomach pain
  • blurred vision
  • confusion
  • confusion about identity, place, and time
  • dark-colored urine
  • decrease in frequency of urination
  • decreased urine
  • diarrhea
  • difficulty in passing urine (dribbling)
  • dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
  • dry mouth

side effects

  • headache
  • trouble sleeping
  • confusion
  • trouble talking
  • tremors or twitching
  • loss of muscle tone or tense muscles
  • shortness of breath
  • dizziness
  • fluttering or pain in your chest


Before using theophylline, tell your doctor or pharmacist if you are allergic to it; or to other xanthine drugs (such as aminophylline, oxtriphylline, caffeine); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.


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.


Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications away from children and pets.

Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.Information last revised July 2016. Copyright(c) 2016 First Databank, Inc.