Asthma and Allergy Network

Buy Quibron-T online

Active ingredient: Theophylline.

Product Description

Quibron-T is used together with other medicines to treat the symptoms of asthma, bronchitis, emphysema, and other lung diseases. Quibron-T belongs to a group of medicines known as bronchodilators. Bronchodilators are medicines that relax the muscles in the bronchial tubes air passages of the lungs. They relieve cough, wheezing, shortness of breath, and troubled breathing by increasing the flow of air through the bronchial tubes.

Theophylline Commonly used brand names In the U.S.: Quibron-T, Quibron-T/SR, Elixophyllin, Norphyl, Phyllocontin, Theo-24, TheoCap, Theochron, Theo-Dur, Theo-Time, Truxophyllin, Uniphyl.

Quibron-T/SR (Theophylline) must be used regularly to prevent wheezing and shortness of breath. This drug belongs to a class of drugs known as xanthines. It works by relaxing the muscles in the airways so that they open up and you can breathe more easily. It also reduces the lungs' response to stimuli. Eliminating the symptoms of breathing problems can reduce the time lost at work or school. This medication must be used regularly for it to be effective. It does not work right away and should not be used to relieve sudden breathing problems. If sudden shortness of breath occurs, use a fast-acting inhaler as directed.

Quibron-T/SR (Theophylline)

Buy Quibron-T online

Who should take this medicine?

Quibron-T (Theophylline) is usually prescribed by a specialist for adults and children whose asthma is poorly treated with other medications. Theophylline is not suitable for everyone, including people with certain medical conditions or those taking certain medications. It is very important that the person prescribing your asthma medications knows your entire medical history and understands what other medications you are taking. Some people with asthma are prescribed theophylline as an adjunct treatment, as well as their usual inhalers to relieve and prevent asthma. Theophylline relaxes the smooth muscles of the airways so that they open up and allow air to pass through more easily.

When you take Quibron-T, it is usually in a pill or capsule that lasts all day. It helps manage the day-to-day symptoms of asthma by opening up the airways and making breathing easier. It works in conjunction with your preemptive inhaler to lower your risk of an asthma attack. Theophylline is also used in hospital emergencies. It is injected directly into a vein (intravenously) to relieve asthma symptoms if an attack of shortness of breath or an asthma attack occurs. You will only be given theophylline intravenously if you are in the hospital. The doctor or nurse who will give it to you will make sure you get the correct dose and answer any questions you may have.

Directions for the use

To get all the benefits of Quibron-T (Theophylline), you need to take it exactly as prescribed. Establish a good daily routine so you remember to do it at the right time every day. You can try to relate this to a habit - for example, taking while taking other asthma medications. Or, if you need to take it once a day, take it with breakfast. You may also find it helpful to set a reminder on your phone or make a note in your diary or calendar. Since different manufacturers have different ways of taking this medicine, ask your doctor or pharmacist about when is the best time to take your brand of theophylline and whether you should take this medicine with or without food. Do not crush or chew capsules or tablets. This can lead to the release of all of the drug at once, increasing the risk of side effects. Also, do not split tablets unless they have a counting line and your doctor or pharmacist tells you to. Swallow a whole or divided tablet without crushing or chewing.


The dosage depends on your medical condition, response to treatment, age, weight, laboratory tests (blood theophylline levels), and other medications you may be taking. Be sure to tell your doctor and pharmacist about all the products you use (including prescription medicines, over-the-counter medicines, and herbal products). To reduce the risk of side effects, your doctor may advise you to start taking this medicine at a low dose and gradually increase your dose. Follow your doctor's instructions carefully. Take this medication regularly to get the most benefit from it. To help you remember, take it at the same time every day. Keep taking this medicine even if you feel well. Do not increase your dose, take this drug more often, or stop taking this drug without first consulting your doctor.

Way of use and dosage

Take this medication exactly as directed by your doctor. Do not take more or take more often than your doctor has ordered. This medicine works best if there is a constant amount of it in the blood. To maintain a constant blood level, take this medication at the same time every day and do not skip a single dose. After you or your child start taking Quibron-T/SR (Theophylline), it is very important that your doctor regularly checks your blood levels of the medicine to decide if you need to change the dose. Follow all blood test appointments. Take an extended-release capsule or tablet every morning at the same time every day. You can take the second dose 10 to 12 hours after your morning dose and before dinner, unless your doctor tells you otherwise. Swallow extended-release tablet whole. Don't break, crush, or chew it. The extended-release tablet can be taken with or without food. It is best to take the extended-release capsule one hour before a high-fat meal or no meal. Measure out your oral fluid using a labeled measuring spoon, mouth syringe, or medicine cup. A regular homemade teaspoon may not have the right amount of liquid.

The dose of this medication will be different for different patients. Follow your doctor's orders or label directions. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to. The amount of medication you take depends on its strength. In addition, the number of doses you take each day, the time between doses, and the length of time you take the medication depends on the medical problem for which you are taking the medication.

To treat symptoms of asthma, bronchitis, and emphysema:

If you miss a dose of Quibron-T/SR (Theophylline), take it as soon as possible. However, if it's time for your next dose, skip the missed dose and go back to your normal dosing schedule. Do not take double doses.

Who should not use this medicine?

It is very important that your doctor checks you or your child at regular visits, especially during the first few weeks after you start using this medicine. Blood tests may be needed to check for unwanted effects. Changes in your usual behavior or physical well-being can affect how this medication works in your body. Stop using this medicine and call your doctor at once if you or your child have any of the following symptoms while using this medicine: nausea or vomiting that continues, headaches, trouble sleeping, cramps, or irregular heartbeat. This medication may increase the stimulatory effect on the central nervous system of foods or beverages containing caffeine, such as chocolate, cocoa, tea, coffee, and cola drinks. Avoid eating or drinking large amounts of these foods or drinks while using this medication. If you have questions about this, check with your doctor.

Possible side effects

This medicine may cause some unwanted effects along with its desired effects. While not all of these side effects may occur, medical attention may be required if they do occur. See your doctor immediately if you experience any of the following side effects:

Seek emergency help immediately if you experience any overdose symptoms. Some side effects may occur that usually do not require medical attention. These side effects may go away during treatment as your body adjusts to the medication. In addition, your healthcare provider can tell you about ways to prevent or reduce some of these side effects. Check with your healthcare professional if any side effects persist, cause concern, or have any questions about them. You can report side effects to the FDA by calling 1-800-FDA-1088.