Theo LA® Extended-Release Tablets for Asthma and COPD

Theo LA is a long-acting theophylline used to help prevent and control bronchospasm in asthma and COPD. This page explains how it works, who may benefit, and safe use basics so you can make informed choices. It also outlines access to Canadian pricing with US delivery from Canada, even without insurance.

What Theo LA Is and How It Works

Theo LA® contains theophylline, a methylxanthine bronchodilator. It inhibits phosphodiesterase, which increases intracellular cAMP and relaxes bronchial smooth muscle. It also antagonizes adenosine receptors, which may reduce airway reactivity. These actions can help maintain open airways and reduce nighttime or exercise‑related symptoms when used as directed.

CanadianInsulin.com is a prescription referral platform. We verify prescriptions with your prescriber when required, and licensed Canadian pharmacies dispense your order.

This medicine is not a rescue option. It does not relieve sudden bronchospasm. Keep a quick‑relief inhaler available for acute symptoms as advised by your clinician.

Who It’s For

The treatment is indicated as maintenance therapy for asthma and as adjunctive therapy in COPD when a prescriber deems it appropriate. It may be considered when inhaled options are insufficient or not tolerated.

People with certain conditions should avoid or use caution, including those with significant arrhythmias, seizure disorders, active peptic ulcer disease, uncontrolled hyperthyroidism, severe hepatic impairment, or known hypersensitivity to methylxanthines. Older adults may have reduced clearance. Smoking tobacco can increase clearance and alter response. Discuss suitability with your clinician.

Dosage and Usage

Dosing is individualized based on age, weight, and serum theophylline levels. Extended‑release products are commonly taken once or twice daily, at the same times each day. Swallow tablets whole. Do not crush, chew, or split.

Take consistently with or without food; keep the pattern the same day to day. High‑fat meals may alter absorption with some formulations. Do not switch between different theophylline products without consulting your prescriber, as release profiles vary. Routine monitoring of serum levels may be required, especially after dose changes, illness, or medication additions.

Strengths and Forms

This extended‑release theophylline is available in oral presentations. Marketed strengths commonly include 100 mg, 200 mg, 300 mg, and 400 mg, depending on manufacturer and region. Availability can vary; some markets supply extended‑release tablets, while others may use capsules. Final product selection and strength depend on your prescription and pharmacy stock.

Missed Dose and Timing

If a scheduled dose is missed, take it when remembered unless it is close to the next dose. In that case, skip the missed dose and resume your usual schedule. Do not take extra medicine to make up for a missed dose. Keeping a daily reminder can support consistent dosing and stable serum levels.

Storage and Travel Basics

Store at room temperature in a dry place, away from excess heat and moisture. Keep the bottle tightly closed and out of reach of children and pets. Do not use tablets that are damaged or discolored. Check the lot and expiry dates before travel.

When you travel, keep the medicine in its original labeled container in your carry‑on. Bring a copy of your prescription. Consider a simple travel checklist to maintain timing across time zones. For long trips, pack extra doses in case of delays and keep a note of your dosing times.

Benefits

This therapy can help reduce chronic bronchospasm and improve breathing control when used as maintenance treatment. Extended‑release dosing may support steady serum concentrations and nighttime symptom control. Oral administration can be useful for patients who cannot use or tolerate certain inhaled options.

Side Effects and Safety

• Nausea or vomiting
• Headache or insomnia
• Restlessness or irritability
• Heartburn or abdominal discomfort
• Tremor or palpitations

Serious reactions can occur, particularly at higher serum levels: severe vomiting, persistent arrhythmias, seizures, or marked CNS stimulation. Theophylline has a narrow therapeutic window. Many illnesses and interacting drugs can change levels. Seek urgent care for severe or worsening symptoms.

Drug Interactions and Cautions

Important interactions include CYP1A2 inhibitors and inducers. Antibiotics such as ciprofloxacin and clarithromycin may increase levels. Cimetidine, fluvoxamine, and certain antivirals can raise exposure. Smoking tobacco or using marijuana may lower exposure. Antiepileptics, rifampin, and St. John’s wort can reduce levels. Fever, acute illness, and hepatic impairment may alter clearance. Limit excess caffeine to avoid additive stimulation. Always provide your full medication list to your clinician.

What to Expect Over Time

With regular use and appropriate monitoring, symptoms may become more manageable. Nighttime awakening and exercise‑related tightness can lessen. Do not expect immediate relief during an acute episode; use a fast‑acting bronchodilator if prescribed. Budget planning around Theo LA Canadian pricing can help maintain adherence over time.

Compare With Alternatives

Other maintenance options include inhaled corticosteroids and leukotriene modifiers. For example, budesonide via the Pulmicort Turbuhaler provides local anti‑inflammatory action. A non‑steroidal option is montelukast, available as Singulair, which targets leukotriene pathways. Discuss goals, tolerability, and monitoring before you Purchase Theo LA online or switch therapies.

Pricing and Access

Our platform lists transparent options so you can compare the Theophylline ER cash price with alternatives. You can start an order, upload your prescription, and check current pricing before you pay. We provide US-facing access that Ships from Canada to US through licensed pharmacies.

To explore affordability, review generics, request multi‑month fills when appropriate, and set refill reminders to avoid gaps. Orders are processed through a secure, encrypted checkout. Your prescriber may be contacted to verify details when required.

Availability and Substitutions

Stock and strengths may vary by supplier. If an item is unavailable, your prescriber may recommend a clinically appropriate alternative or a different strength. If you need assurance on cross‑border fulfilment, note that Theophylline ER ships to US via our referral network, subject to prescription verification and pharmacy stock.

Patient Suitability and Cost-Saving Tips

This therapy may suit adults who require oral maintenance support for asthma or COPD and can commit to monitoring. It may not suit those with significant arrhythmias, active seizures, or severe hepatic disease. Smoking status, age, and concurrent medications should be reviewed before initiation.

To manage expenses, compare generic options, consider longer fills, and coordinate renewals early. For budgeting, track Theo LA out of pocket expenses across months rather than per purchase. Keep your dosing consistent to minimize avoidable clinic visits for level checks. Review your plan during seasonal changes or when new medicines are added.

Questions to Ask Your Clinician

• Role in my plan: How does this therapy complement my inhaled regimen?
• Monitoring: How often should serum theophylline levels be checked?
• Food timing: Should I take it with meals, and keep that pattern constant?
• Interactions: Which medicines or supplements could change my levels?
• Smoking changes: What if I start or stop smoking while on therapy?
• Illness: What should I do if I develop a fever or new infection?
• Rescue plan: Which inhaler should I use for sudden symptoms?

Authoritative Sources

FDA DailyMed: Theophylline Extended‑Release

Health Canada Drug Product Database: Theophylline

FDA Drug Search: Theophylline

Related Reading

Learn more about airway health and related conditions: see Reduce Asthma Attacks and Sleep Apnea Options. For broader chronic disease education, explore Diabetes Medications. You can also browse the Asthma category to compare maintenance and reliever choices.

Ready to proceed? Start your order and arrange US shipping from Canada with prompt, express shipping. Temperature-controlled handling when required. This information is educational and not a substitute for professional medical advice.