theophylline sustained release
In this drug factsheet:
How does this medication work? What will it do for me?
Theophylline belongs to the class of medications called bronchodilators. It is used to treat respiratory conditions such as asthma, emphysema, and chronic bronchitis. It opens the airways, which helps to relieve symptoms associated with breathing problems such as cough, wheezing, and shortness of breath.
Your doctor may have suggested this medication for conditions other than those listed in these drug information articles. As well, some forms of this medication may not be used for all of the conditions discussed here. If you have not discussed this with your doctor or are not sure why you are being given this medication, speak to your doctor. Do not stop taking this medication without consulting your doctor.
Do not give this medication to anyone else, even if they have the same symptoms as you do. It can be harmful for people to take this medication if their doctor has not prescribed it.
How should I use this medication?
The dose of theophylline sustained release is determined based on individual needs and may vary depending on the specific product used.
Theophylline sustained release is usually taken with food and with plenty of liquids. Your doctor may change the dose, depending on your response to the medication and the levels of theophylline in your blood.
Do not use theophylline to relieve sudden breathing attacks because it would take too long for it to start working.
Never chew or crush theophylline sustained release tablets, but you may cut them in half if a score line appears on the tablet.
Many things can affect the dose of a medication that a person needs, such as body weight, other medical conditions, and other medications. If your doctor has recommended a dose different from the ones listed here, do not change the way that you are taking the medication without consulting your doctor.
It is important to take this medication exactly as prescribed by your doctor. If you miss a dose, take it as soon as possible and continue with your regular schedule. If it is almost time for your next dose, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to make up for a missed one. If you are not sure what to do after missing a dose, contact your doctor or pharmacist for advice.
Store this medication at room temperature and keep it out of the reach of children.
Do not dispose of medications in wastewater (e.g. down the sink or in the toilet) or in household garbage. Ask your pharmacist how to dispose of medications that are no longer needed or have expired.
What form(s) does this medication come in?
Each round, flat-faced, white, sustained release tablet, scored and marked "U" over "400" on one side and "PF" on the other, contains 400 mg of theophylline. Nonmedicinal ingredients: cetostearyl alcohol, hydroxyethyl cellulose, magnesium stearate, povidone, and talc. Sodium- and tartrazine-free.
Each capsule-shaped, concave-faced, white sustained release tablet, scored and marked "U" over "600" on one side and "PF" on the other, contains 600 mg of theophylline. Nonmedicinal ingredients: cetostearyl alcohol, hydroxyethyl cellulose, magnesium stearate, povidone, and talc. Sodium- and tartrazine-free.
Who should NOT take this medication?
Theophylline sustained release should not be taken by anyone who:
- is allergic to theophylline, any of the xanthines, or to any of the ingredients of the medication
- has coronary artery disease (when, in the opinion of the doctor, it would be harmful to stimulate the heart)
- has peptic ulcers