Theo-Dur (Theophylline)
Theophylline SR (Generic)Theophylline |
|||||
|
Select product strength & quantity:
Who is the product for? YouOtherAdd Family Member/PetYou must be logged in to add additional members to the order. Don't have an account? or
Add Family Member/PetSign inTo continue, please enter your email address and password that you use for your account. |
|||||
|
Select product strength & quantity:
Who is the product for? YouOtherAdd Family Member/PetYou must be logged in to add additional members to the order. Don't have an account? or
Add Family Member/PetSign inTo continue, please enter your email address and password that you use for your account. |
|||||
|
Select product strength & quantity:
Who is the product for? YouOtherAdd Family Member/PetYou must be logged in to add additional members to the order. Don't have an account? or
Add Family Member/PetSign inTo continue, please enter your email address and password that you use for your account. |

Theo-Dur (Theophylline)
Theo-Dur (Theophylline) is a medication primarily used to treat asthma and other chronic lung diseases. It works by relaxing the airways’ muscles, making breathing easier. This bronchodilator helps improve airflow and reduce the frequency of asthma attacks.
Why Choose Theo-Dur (Theophylline)?
- Effective Bronchodilation: Helps open the airways for better airflow.
- Improves Breathing: Reduces shortness of breath and wheezing.
- Long-Lasting Relief: Provides extended relief for chronic respiratory conditions.
- Convenient Dosing: Available in various forms, including extended-release tablets.
How to Use Theo-Dur (Theophylline)?
- Follow Doctor’s Prescription: Always take Theo-Dur exactly as your healthcare provider prescribes.
- Timing of Doses: Take doses at the same times each day for optimal effectiveness.
- Stay Hydrated: Drink plenty of fluids while using this medication to help prevent side effects.
- Monitor Your Condition: Keep track of any changes in symptoms and discuss them with your doctor.
- Do Not Adjust Dose: Never increase or decrease your dosage without consulting your healthcare provider.
Important Safety Information about Theo-Dur
- Allergies: Inform your doctor if you have any allergies to Theophylline or other medications.
- Drug Interactions: Be aware of potential interactions with other medications, including over-the-counter drugs and supplements.
- Pregnancy and Nursing: Consult your doctor if you are pregnant, planning to become pregnant, or breastfeeding.
- Pre-existing Conditions: Disclose any history of heart problems, liver disease, or seizures to your healthcare provider.
Fact Table
| Facts | Details |
| Generic Name | Theophylline |
| Brand Name | Theo-Dur |
| Drug Class | Bronchodilator |
| Indications | – Asthma – Chronic Obstructive Pulmonary Disease (COPD) – Other respiratory conditions requiring bronchodilation |
| Mechanism of Action | Relaxes the smooth muscles of the airways, increasing airflow to the lungs |
| Forms Available | – Extended-release tablets – Oral solution – Injectable formulation |
| Dosage Strengths | – 100 mg – 200 mg – 300 mg |
| Usual Dosage | Depends on age, weight, and medical condition; and typically ranges from 300 mg to 600 mg per day in divided doses |
| Onset of Action | 1 to 2 hours (for extended-release forms) |
| Duration of Action | Up to 12 hours |
| Common Side Effects | – Nausea – Vomiting – Headache – Insomnia – Increased heart rate – Nervousness |
| Drug Interactions | – Cimetidine – Erythromycin – Warfarin – Other medications that affect liver enzymes |
| Storage | Store at room temperature away from moisture and heat |
Common Side Effects
Like all medications, Theo-Dur (Theophylline) can cause side effects, although not everybody gets them. Understanding these side effects can help you use this medication safely and effectively.
- Nausea or Vomiting
- Headache
- Insomnia
- Increased Heart Rate
- Nervousness
If you experience any side effects, discuss them with your healthcare provider. They can offer advice and may adjust your treatment if necessary. Report any severe or unexpected side effects immediately.
How Can You Buy Theo-Dur (Theophylline)?
You can order Theo-Dur (Theophylline) using these methods on our website:
- Order Online
- Order by Phone
- Order by Fax
- Order your refills
Visit our How to order page.
Frequently Asked Questions
- What is Theo-Dur used for?
- How should Theo-Dur be taken?
- What are the possible side effects of taking Theo-Dur?
- Are there any known drug interactions with Theo-Dur?
- What precautions should be taken while using Theo-Dur?
- Can Theo-Dur be used during pregnancy or while breastfeeding?
- What are the signs of a Theo-Dur overdose?
- Can diet or beverages affect Theo-Dur?
Free shipping is available for all orders $100 and above as a thank you for your understanding.
Please note: Canada Post is working to clear their backlog, so slight delays may still occur.