Theo-Dur

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Generic name: Theophylline
Brand names: Aerolate, Asmalix, Lanophyllin, Pulmophylline, Quibron-T Dividose, Quibron-T/SR Dividose, Slo-Bid Gyrocaps, Slo-Phyllin, Theo-24, Theobid Duracaps, Theo-Dur, Theolair, Theo-Time, Theovent Long-Acting, Theo-X, T-Phyl, Uni-Dur
Related Medical Conditions: Asthma, Bronchitis, Chronic Bronchitis, Emphysema, Wheezing
Related Groups: Antiasthmatic, Bronchodilator

Theo-Dur Articles

Contents

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What is Theo-Dur?

Theophylline is used to treat and/or prevent the symptoms of bronchial asthma, chronic bronchitis , and emphysema. These medicine relieves cough, wheezing, shortness of breath, and troubled breathing. It works by opening up the bronchial tubes (air passages of the lungs) and increasing the flow of air through them.

The oral liquid, tablet, and capsule dosage forms of these medicines may be used for treatment of the acute attack or for chronic long-term treatment. The enteric-coated and extended-release dosage forms are usually used only for chronic treatment.

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Theo-Dur Usage and Dosage

For patients taking this medicine by mouth :

  • If you are taking the capsule, tablet, liquid, or extended-release (not including the once-a-day capsule or tablet) form of this medicine, it works best when taken with a glass of water on an empty stomach (either 30 minutes to 1 hour before meals or 2 hours after meals). In some cases your doctor may want you to take this medicine with meals or right after meals to lessen stomach upset. If you have any questions about how you should be taking this medicine, check with your doctor.
  • If you are taking the once-a-day capsule or tablet form of this medicine, some products are to be taken each morning after fasting overnight and at least 1 hour before eating. *However, other products are to be taken in the morning or evening with or without food. Be sure you understand exactly how to take the medicine prescribed for you . Try to take the medicine about the same time each day.
  • There are several different forms of theophylline capsules and tablets. If you are taking:
    • Enteric-coated or delayed-release tablets, swallow the tablets whole. Do not crush, break, or chew before swallowing.
    • Extended-release capsules , swallow the capsule whole. Do not crush, break, or chew before swallowing. Do not open the capsule and sprinkle the beads onto food unless told to do so by your health care professional.
    • Extended-release tablets , swallow the tablets whole. Do not break (unless tablet is scored for breaking), crush, or chew before swallowing.

Use this medicine only as directed by your doctor . Do not use more of it, do not use it more often, and do not use it for a longer time than your doctor ordered. To do so may increase the chance of serious side effects.

In order for this medicine to help your medical problem, it must be taken every day in regularly spaced doses as ordered by your doctor . This is necessary to keep a constant amount of this medicine in the blood. To help keep the amount constant, do not miss any doses.

When you are taking theophylline, it is very important that you get the exact amount of medicine that you need. The dose of these medicines will be different for different patients. Your doctor will determine the proper dose of these medicines for you. Follow your doctor's orders or the directions on the label .

After you begin taking theophylline, it is very important that your doctor check the level of medicine in your blood at regular intervals to find out if your dose needs to be changed. Do not change your dose of theophylline unless your doctor tells you to do so .

The number of capsules or tablets or teaspoonfuls of solution or syrup that you take depends on the strength of the medicine. Also, the number of doses you take each day and the time between doses depend on whether you are taking a short-acting or long-acting form of theophylline .

Missed dose-If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.

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Theo-Dur Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor as soon as possible if any of the following side effects occur:

  • Less common
    • Heartburn and/or vomiting
  • Rare
    • Hives, skin rash, or sloughing of skin (with aminophylline only)
  • Symptoms of toxicity
    • Abdominal pain, continuing or severe; confusion or change in behavior; convulsions (seizures); dark or bloody vomit; diarrhea; dizziness or lightheadedness; fast and/or irregular heartbeat; nervousness or restlessness, continuing; trembling, continuing

Other side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. However, check with your doctor if any of the following side effects continue or are bothersome:

  • Less common
    • Headache; fast heartbeat; increased urination; nausea; nervousness; trembling; trouble in sleeping

Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor.

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Other Drugs Interaction

Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking aminophylline, oxtriphylline, or theophylline, it is especially important that your health care professional know if you are taking any of the following:

  • Beta-adrenergic blocking agents including those used in the eyes (acebutolol [e.g., Sectral], atenolol [e.g., Tenormin], betaxolol [e.g., Betoptic, Kerlone], bisoprolol [e.g., Zebeta], carteolol [e.g., Cartrol], labetalol [e.g., Normodyne], levobunolol [e.g., Betagan], metipranolol [e.g., OptiPranolol], metoprolol [e.g., Lopressor], nadolol [e.g., Corgard], oxprenolol [e.g., Trasicor], penbutolol [e.g., Levatol], pindolol [e.g., Visken], propranolol [e.g., Inderal], sotalol [e.g., Sotacor], timolol [e.g., Blocadren, Timoptic])-These medicines may prevent aminophylline, oxtriphylline, or theophylline from working properly
  • Cimetidine (e.g., Tagamet) or
  • Ciprofloxacin (e.g., Cipro) or
  • Clarithromycin (e.g., Biaxin) or
  • Enoxacin (e.g., Penetrex) or
  • Erythromycin (e.g., E-Mycin) or
  • Fluvoxamine (e.g., Luvox) or
  • Mexiletine (e.g., Mexitil) or
  • Pentoxifylline (e.g., Trental) or
  • Propranolol (e.g., Inderal) or
  • Tacrine (e.g., Cognex) or
  • Thiabendazole or
  • Ticlopidine (e.g., Ticlid) or
  • Troleandomycin (e.g., TAO)-These medicines may increase the effects of aminophylline, oxtriphylline, or theophylline
  • Moricizine (e.g., Ethmozine) or
  • Phenytoin (e.g., Dilantin) or
  • Rifampin (e.g., Rifadin)-These medicines may decrease the effects of aminophylline, oxtriphylline, or theophylline
  • Smoking tobacco or marijuana-Starting or stopping smoking may change the effectiveness of these medicines
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Theo-Dur Storage

To store this medicine:

  • Keep out of the reach of children.
  • Store away from heat and direct light.
  • Do not store the capsule or tablet form of this medicine in the bathroom, near the kitchen sink, or in other damp places. Heat or moisture may cause the medicine to break down.
  • Keep the liquid form of this medicine from freezing.
  • Do not keep outdated medicine or medicine no longer needed. Be sure that any discarded medicine is out of the reach of children.
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