Theo-Dur (Theophylline)

Rx Prescription Required

Order your Theo-Dur prescription from Canadian Pharmacy Online. Stop paying those high prices and compare our cost with your local pharmacy.

Theo-Dur 200mg
Theophylline SR 100mg
Teva Pharmaceuticals
Theophylline SR 200mg
Apotex Inc

Buy Theo-Dur Online

To get your Theo-Dur sent to as soon as possible, call us on 1-800-828-4889 to submit a valid prescription. If you have it, click on our live chat tool, which is Canadian Pharmacy Online CHAT. We have all the answers you may require and once you communicate, we will respond quickly. There is also a How to Order guide on our website; read it to understand how our system works. The maximum amount that can be ordered is a three month supply of medication based on your prescription.

Available Dosages

We offer generic medicine called Theophylline SR. Our medicine is made by Teva Pharmaceuticals and Apotex Inc as a product of Canada. We offer these dosage strengths, including 100mg and 200mg.

Theo-Dur Price

Theo-Dur is best-priced on We offer a cheap price of $42 for 100, 100mg tablets. If you get these at a local drugstore in the United States, you will pay an average retail cost of $. By getting these on our website instead, you can save up to $. The items will be shipped directly to your door, ensuring that you save the time you would otherwise spend at a local drugstore. To gather more details about us or speak to us, call us on 1-800-828-4889 today.


This medicine will be shipped from Canada to the US in 7 to 10 business days. Once shipped, you will receive a notification by email. There will be no shipping fees.

Theo-Dur Information

There are a lot of different breathing conditions and all of them can limit your ability to carry out normal activities. It could be asthma, emphysema or bronchitis. All of them will be treated in the same sort of way. Bronchodilators are the type of medicine used and they relax the muscles in the airways. Once this has happened it will be easier to breathe. Once taken there will be less shortness of breath, coughing and wheezing. Air can get into the tubes and they are no longer blocked.

How To Use

Theo-Dur is only available on prescription. Patients will need to be given a dosage based upon their specific condition and the severity. The tablets should be swallowed whole and not broken up. For adults, it will usually be 200 mg to 300 mg every 12 hours. If this is not enough, there can be an increase of between 50 mg and 100 mg every 12 hours over 3 days. It is hoped that by then the correct dosage will have been found. It is considered that there should not be doses over 450 mg every 12 hours. Children should take 6 mg every 12 hours. If there are no problems this can rise to 12 mg every 12 hours. It is possible that the dosage will be changed to 8 hourly doses if 12-hour gaps are leading to the medication being less effective.

Side Effects

There may be side effects when taking Theo-Dur and they can include:

  • Dizziness
  • Vomiting
  • Fainting
  • Increased urine output
  • Shaking
  • Seizures
  • Chest pain.


Before taking Theo-Dur, tell the doctor if you have:

  • Sepsis
  • Kidney problems
  • High temperature
  • Congestive heart failure
  • Liver disease
  • Lung conditions
  • Stomach ulcers.


Save $10 on your first order!
Enter Canadian Pharmacy Online coupon code CPO10 to save $10 off your order. Minimum $50 order value. *Coupon codes are one-time use and cannot be combined.