Skip to Content

Theo-24

Generic Name: theophylline (thee OFF i lin)
Brand Name: Elixophyllin, Theo-24

Medically reviewed by Drugs.com on Nov 13, 2018 – Written by Cerner Multum

What is Theo-24?

Theo-24 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.

Theo-24 is used to treat symptoms such as wheezing or shortness of breath caused by asthma, bronchitis, emphysema, and other breathing problems

Theo-24 may also be used for purposes not listed in this medication guide.

Important Information

Do not take Theo-24 in larger or smaller amounts or for longer than recommended. This medicine 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 Theo-24, 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 Theo-24. 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 Theo-24 and call your doctor at once if you have severe or continued vomiting, rapid heartbeats, confusion, tremors, or seizure.

Before taking this medicine

You should not use Theo-24 if you are allergic to it.

To make sure Theo-24 is safe for you, tell your doctor if you have any of these conditions:

FDA pregnancy category C. It is not known whether Theo-24 will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medication.

Theophylline can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

Do not give this medication to anyone under 18 years old without medical advice.

Serious side effects may be more likely in older adults taking Theo-24.

How should I take Theo-24?

Follow the directions on your prescription label. Do not take Theo-24 in larger or smaller amounts or for longer than recommended. Your doctor may occasionally change your dose to make sure you get the best results.

Do not use Theo-24 to treat an asthma or bronchospasm attack. Use only a fast acting inhalation medication.

Your dose and the number of times you take Theo-24 daily will depend on the reason you are taking this medication.

Your dosage needs may change if you are ill, or if your doctor changes your brand, strength, or type of theophylline. You will need regular medical tests to be sure you are using the right dose. Do not change your medication dose or schedule without your doctor's advice.

Take Theo-24 with a full glass of water.

Follow your doctor's instructions about whether to take your medication with food or on an empty stomach. Take the medication the same way every time.

Do not crush, chew, break, or open an extended-release tablet or capsule. Swallow it whole. Breaking or opening the pill may cause too much of the drug to be released at one time.

Measure liquid medicine with a special dose-measuring spoon or medicine cup, not with a regular table spoon. If you do not have a dose-measuring device, ask your pharmacist for one.

This medication can affect the results of certain medical tests. Tell any doctor who treats you that you are using Theo-24.

Do not start or stop smoking without first talking to your doctor. Smoking changes the way your body uses Theo-24, and you may need to use a different dose.

Store at room temperature away from moisture, heat, and light.

What happens if I miss a dose?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. Seizures caused by a Theo-24 overdose can cause death or permanent brain damage.

Theo-24 overdose can occur if you accidentally take too much at one time. Overdose can also occur slowly over time if your daily doses are too high. To be sure you are using the correct dose, your blood will need to be tested often.

Overdose symptoms may include severe forms of some of the side effects listed in this medication guide.

What should I avoid while taking theophylline?

Avoid eating foods that are high in fat within 1 hour before or after taking Theo-24.

This medication may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert.

Theo-24 side effects

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 Theo-24 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:

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 other drugs will affect Theo-24?

Sometimes it is not safe to use certain drugs at the same time. Some medicines can affect how Theo-24 works, which could make it less effective or cause side effects. This medicine could also affect how other medicines work, making them less effective or causing side effects.

Many drugs can interact with Theo-24 and not all possible interactions are listed in this medication guide. Tell your doctor about all medications you use, start using, or stop using during your treatment with this medicine, especially:

This list is not complete and many other drugs can interact with Theo-24. This includes prescription, over-the-counter, vitamin, and herbal products. Keep a list of all your medicines and show it to any healthcare provider who treats you.

Further information

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Hide