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Medications and Drugs

Brand Names: Elixophyllin, Theo-24

Generic Name: theophylline (Pronunciation: thee OFF i lin)

What is theophylline (Elixophyllin, Theo-24)?

Theophylline is a bronchodilator. It works by relaxing muscles in the lungs and chest, making the lungs less sensitive to allergens and other causes of bronchospasm.

Theophylline is used to treat symptoms such as wheezing or shortness of breath caused by asthma, bronchitis, emphysema, and other breathing problems

Theophylline may also be used for purposes not listed in this medication guide.

Quibron 300 mg

rectangular, white, imprinted with RP 070

Theo-24 100 mg

capsule, orange/yellow, imprinted with Theo-24 100 mg, ucb 2832

Theo-24 200 mg

capsule, orange/red, imprinted with Theo-24 200 mg, ucb 2842

Theo-24 300 mg

capsule, clear/red, imprinted with Theo-24 300 mg, ucb 2852

Theo-24 400 mg

capsule, clear/pink, imprinted with Theo-24 400 mg, ucb 2902

Theo-Dur 200 mg

elliptical, white, imprinted with THEO-DUR 200

Theo-Dur 300 mg

oblong, white, imprinted with THEO-DUR 300

Theo-Dur 450 mg

oblong, white, imprinted with THEO-DUR 450

Theophylline 100 mg ER-INW

round, white, imprinted with LOGO 3584

Theophylline 200 mg ER-MUT

elliptical, white, imprinted with IL 3583

Theophylline 200 mg-QUA

elliptical, white, imprinted with SL 482

Theophylline 200 mg-WAR

elliptical, white, imprinted with WARRICK 1660

Theophylline 300 mg ER-INW

oblong, white, imprinted with LOGO 3581

Theophylline 300 mg ER-WAR

oblong, white, imprinted with WARRICK 1670

Theophylline 450 mg-BAR

oblong, white, imprinted with PLIVA 518

Theophylline 450 mg-WAR

oblong, white, imprinted with WARRICK 1680

Theophylline SR 300 mg-BAR

oblong, white, imprinted with SL 459

Uniphyl 400 mg

round, white, imprinted with P F, U 400, PF, U400

What are the possible side effects of theophylline (Elixophyllin, Theo-24)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop using theophylline and call your doctor at once if you have a serious side effect such as:

  • severe or continued vomiting;
  • rapid or uneven heartbeats;
  • seizure (convulsions);
  • confusion, tremors or shaking;
  • nausea and vomiting, severe headache, rapid heart rate;
  • low potassium (confusion, uneven heart rate, extreme thirst, increased urination, leg discomfort, muscle weakness or limp feeling); or
  • high blood sugar (increased thirst, increased urination, hunger, dry mouth, fruity breath odor, drowsiness, dry skin, blurred vision, weight loss).

Less serious side effects may include:

  • stomach pain, diarrhea, upset stomach;
  • headache;
  • sweating;
  • sleep problems (insomnia); or
  • feeling restless, nervous, or irritable;

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about theophylline (Elixophyllin, Theo-24)?

Do not take theophylline in larger or smaller amounts or for longer than recommended. Theophylline overdose can occur if you accidentally take too much at one time, or if your daily doses are too high. To be sure you are using the correct dose, your blood will need to be tested often.

Do not start or stop smoking without first talking to your doctor. Smoking changes the way your body uses theophylline, and you may need to use a different dose.

Sometimes it is not safe to use certain drugs at the same time. Many drugs can interact with theophylline. Tell your doctor about all other medicines you use. Also tell your doctor if you start or stop using any of your other medications.

Stop using theophylline and call your doctor at once if you have severe or continued vomiting, rapid heartbeats, confusion, tremors, or seizure.

Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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