Theo-Dur
(Theophylline ER)-
All Strengths
-
100mg
-
200mg
-
300mg
What is a generic medication?
Generic medications are significantly discounted copies of brand name medication that have the same active ingredients, intended use, dosage, side effects, effects, and route of administration as the original brand name medication. In other words, generic medications have the same pharmacological effects as their brand-name counterparts. Over half of all prescribed medications are for generic medications.
Theophylline ER 100mg
Extended Release TabletsPlease Note: Tablet cannot be split, must be swallowed whole
Theophylline ER 200mg
Extended Release TabletsPlease Note: Tablet cannot be split, must be swallowed whole
Theophylline ER 300mg
Extended Release TabletsTheo-Dur Drug Information
Are you paying too much for Theo-Dur? Save up to 80% when purchasing your prescription drugs from Universal Drugstore. Our prescription service aspires to conveniently provide you with affordable medications at the lowest prices in Canada and internationally.
We’re working with a number of Canadian and international pharmacy partners, all licensed by their qualified governmental regulatory bodies. By collaborating with our partners, we are able to offer a wide range of brand and generic medications at very competitive prices. You can obtain discount prescription drugs through our online pharmacy. Our prices are already up to 80% lower than your local pharmacy. We are committed to providing you with the best service and prices. This is why we’ll match the price of any of our online pharmacy competitors who require a valid prescription.
Order Theo-Dur at a discount price today!
Why Buy Theo-Dur from Universal Drugstore?
We are the global leader in online prescription drug savings with almost 20 years of experience supplying prescription and over the counter drugs to our international customers. More than 300,000 international patients have used our service to receive their prescription and over-the-counter medications.
In the past two decades together with our international pharmacy partners we have shipped over 2 million prescription medication orders to our satisfied customers.
Your safety is our top priority. You can feel completely secure purchasing through us. We use SSL encryption to secure all of your personal information that is transferred through our website while using our service.
How Long Does It Take to Receive My Theo-Dur Order?
You can easily place an order on our website in under 5 minutes. First you need to set up an account with us, create a payment method, and send us your prescriptions. Alternatively, you can order by downloading our order form or by placing an order over the phone. Delivery can take approximately 2 weeks to North America, and 4 weeks to other countries.
Theo-Dur Overview
Theophylline is used to treat lung diseases such as asthma and COPD (bronchitis, emphysema). It must be used regularly to prevent wheezing and shortness of breath. Theo-Dur belongs to a class of drugs known as xanthines. It works by relaxing the muscles around the airways so that they open up and you can breathe more easily. It also decreases the lungs' response to irritants. Controlling symptoms of breathing problems can decrease time lost from work or school. Theo-Dur must be used regularly 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 your quick-relief inhaler as prescribed.
How to Use Theo-Dur
Take Theo-Dur by mouth as directed by your doctor, usually once or twice daily. Since different manufacturers have different ways to take Theo-Dur, ask your doctor or pharmacist about the best time(s) to take your brand of theophylline and if you should take the drug with or without food. Do not crush or chew the capsules or tablets. Doing so can release all of the drug at once, increasing the risk of side effects. Also, do not split the tablets unless they have a score line and your doctor or pharmacist tells you to do so. Swallow the whole or split tablet without crushing or chewing. The Dosage of Theo-Dur is based on your medical condition, response to treatment, age, weight, lab tests (theophylline blood levels), and other medications you may be taking. Be sure to tell your doctor and pharmacist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products). To reduce your risk of side effects, your doctor may direct you to start Theo-Dur at a low dose and gradually increase your dose. Follow your doctor's instructions carefully. Certain diets (such as high protein/low carbohydrate or high carbohydrate/low protein) may change the effect of theophylline. Tell your doctor if you have any major changes in your diet. Your doctor may need to adjust your dose. Take Theo-Dur regularly to get the most benefit from it. To help you remember, take it at the same time(s) each day. Keep taking Theo-Dur even if you feel well. Do not increase your dose, take Theo-Dur more often, or stop taking it without first consulting your doctor. Get medical help right away if your asthma symptoms worsen or if you are using your quick-relief inhaler more than usual or more often than prescribed.
Theo-Dur Precautions
Before using theophylline, tell your doctor or pharmacist if you are allergic to it; or to other xanthine drugs (such as aminophylline, oxtriphylline, caffeine); or if you have any other allergies. Theo-Dur may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details. Before using Theo-Dur, tell your doctor or pharmacist your medical history,stomach/intestinal ulcer, seizures, thyroid disease, heart problems (such as heart failure, irregular heartbeat), liver disease, high blood pressure. If you get sick or have a fever while taking Theo-Dur, tell your doctor right away. The dose of your medicine may need to be adjusted. Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products). Older adults may be more sensitive to the side effects of Theo-Dur, especially fast/irregular heartbeat, or trouble sleeping. Careful monitoring of side effects and drug blood levels is recommended. Children may be more sensitive to the side effects of Theo-Dur. Careful monitoring of side effects and drug blood levels is recommended. During pregnancy, Theo-Dur should be used only when clearly needed. Discuss the risks and benefits with your doctor. Changes in your body during the last 3 months of pregnancy may affect the amount of Theo-Dur in your blood. Your doctor should carefully monitor the amount of drug in your blood, as well as any side effects, so that your dose may be changed if needed. Theo-Dur passes into breast milk and may have undesirable effects on a nursing infant. Consult your doctor before breast-feeding.
Theo-Dur Misdose
If you miss a dose of Theo-Dur, skip the missed dose. Take your next dose at the regular time. Do not double the dose to catch up.
Theo-Dur Interactions
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.riociguat. Other medications can affect the removal of theophylline from your body, which may affect how theophylline works. Examples include cimetidine, disulfiram, fluvoxamine, interferon, mexiletine, propranolol, rifampin, drugs used to treat seizures (such as carbamazepine, phenytoin), St. John's wort, ticlopidine, viloxazine, among others. Cigarette/marijuana (cannabis) smoking decreases blood levels of Theo-Dur. Tell your doctor if you smoke or if you have recently stopped smoking. Caffeine and alcohol can increase the side effects of Theo-Dur. Avoid drinking large amounts of beverages containing alcohol or caffeine (such as coffee, tea, colas), eating large amounts of chocolate, or taking nonprescription products that contain caffeine. Theophylline is very similar to aminophylline and oxtriphylline. Do not take medications containing aminophylline or oxtriphylline while using theophylline. Theo-Dur may interfere with certain lab tests (such as blood sugar, cholesterol, uric acid, dipyridamole-thallium imaging tests), possibly causing false test results. Make sure lab personnel and all your doctors know you use Theo-Dur.
Theo-Dur Side Effects
Nausea/vomiting, stomach/abdominal pain, headache, trouble sleeping, diarrhea, irritability, restlessness, nervousness, shaking, or increased urination may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. Remember that Theo-Dur has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using Theo-Dur do not have serious side effects. Tell your doctor right away if you have any serious side effects,nausea/vomiting that doesn't stop, fast/slow/irregular heartbeat, muscle cramps, fainting, confusion, dizziness. Get medical help right away if you have any very serious side effects,seizures. A very serious allergic reaction to Theo-Dur is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction,rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch. In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Theo-Dur Storage
Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications away from children and pets. Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard Theo-Dur when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.
IMPORTANT DISCLAIMER: All medical content is supplied by a third-party company who is independent from this web site. As such, this web site cannot guarantee the reliability, accuracy, and /or medical efficacy of the information provided. In all circumstances, you should seek the advice of a health professional pertaining to drug, treatment and/or medical condition advice. Note that not all products are shipped by our contracted Canadian pharmacy. This website contracts with dispensaries around the world that ship products directly to our customers. Some of the jurisdiction include but are not limited to United Kingdom, Europe, Turkey, India, Canada, Vanuatu, Mauritius, and USA. The items within your order may be shipped from any one of these jurisdictions depending on the availability and cost of the products at the time you place your order. The products are sourced from these countries as well as others. Please note that the product appearance may vary from actual product received depending on availability.