Theo Dur (Theophylline SR)

Please read the instructions before using Theo-Dur tablets.

Do’s

• Take Theo-Dur by mouth as directed by your healthcare provider, usually once or twice daily. Swallow the whole tablet or split it without crushing or chewing.
• For a once-daily regimen, take Theo-Dur every morning at the same time each day. If prescribed to take twice daily, you may take your second dose 10 to 12 hours after the morning dose and before the evening meal, unless your healthcare provider tells you otherwise.
• The dosage is based on your medical condition, response to treatment, age, weight, lab tests (theophylline blood levels), and other medications you may be taking. Inform your healthcare provider about all the products you use, including prescription drugs, nonprescription drugs, and herbal products.
• To reduce your risk of side effects, your healthcare provider may direct you to start Theo-Dur at a low dose and gradually increase your dose. Follow their instructions carefully.
• 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 this medication even if you feel well.
• 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.

Don’ts

• Do not crush or chew the 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 healthcare provider tells you to do so.
• Do not increase your dose, take Theo-Dur more often, or stop taking it without first consulting your healthcare provider.

Common Side Effects of Theo-Dur

• Nausea
• Vomiting
• Headache
• Insomnia
• Upset stomach
• Stomach pain
• Diarrhea
• Restlessness
• Difficulty falling asleep or staying asleep
• Irritability

Severe Side Effects of Theo-Dur

• Seizures in patients with underlying neurological disease or elderly patients with serum theophylline levels under 20 mcg/mL

Long-term Effects:

• Caffeine-like adverse effects
• Decreased protein binding causes higher unbound (pharmacologically active) theophylline levels

This is not an exhaustive list of side effects. If you experience any symptoms or side effects, consult your healthcare provider for medical advice.

Warnings

A healthcare provider should be consulted before taking Theo-Dur and any drug, changing any diet, or commencing or discontinuing any course of treatment.

Elderly patients may be more sensitive to the effects of theophylline than younger adults and are more likely to have kidney, liver, heart, or lung problems, which may require caution and an adjustment in the dose.

Studies in women suggest that this medication poses minimal risk to the infant when used during breastfeeding. Caution is advised for pediatric and geriatric patients, and appropriate studies have not demonstrated pediatric-specific problems that would limit the usefulness of Theo-Dur in children.

An overdose can occur if accidentally taking too much at one time or if daily doses are too high. If you think you or someone else may have overdosed, immediate medical assistance should be sought.

Adhere to these warnings and precautions and consult a healthcare provider for personalized advice related to the use of Theo-Dur.

Where Can I Buy Theophylline SR?

Theophylline SR (the generic form of Theo Dur) is available at most pharmacies with a valid prescription from your doctor. You can purchase it at local retail pharmacies or through online pharmacy services. If you're looking for a more affordable option, Canadian pharmacies offer competitive pricing on this medication. DoctorSolve is a certified online pharmacy intermediary that connects you with licensed Canadian pharmacies, providing access to safe and genuine Theophylline SR at lower costs. Simply add the medication with your required dosage and pack size to your cart, submit your valid prescription, and your order will typically arrive within 2-4 weeks.

What is the cost of Theophylline SR?

The cost of Theophylline SR varies based on factors such as dosage and pack size. A 100-pack of 300mg Theophylline SR costs over $87.63 on average at major retail pharmacy chains. If you're looking for a more affordable option, Canadian pharmacies offer significantly lower prices. Through DoctorSolve.com, the same tablet pack is available for approximately $45.00, a savings of around 48.65% compared to your local pharmacy. This makes Canadian pharmacies an excellent choice for those seeking cost-effective access to their prescription medications.

Can I buy Theophylline SR over the counter?

No, you cannot buy Theophylline SR over the counter from your local pharmacy. Its active ingredient, theophylline, is prescription-only because improper dosing can be toxic. It may cause serious side effects such as seizures and irregular heartbeat.