Buy Theo-24 Sr

Theo-24 Sr

Theo-24 Sr is a prescription-only medication used to manage chronic respiratory conditions such as asthma and chronic obstructive pulmonary disease (COPD). The active ingredient, theophylline, belongs to the methyl-xanthine class of bronchodilators and works by relaxing airway smooth muscle and reducing inflammation. In Singapore, it is typically prescribed when inhaled therapies alone do not achieve adequate control, and it is available in a 200 mg pill form that can be taken one to three times daily depending on serum levels and clinical response.

What is Generic Theo-24 Sr (Theophylline)?

Generic Theo-24 Sr (Theophylline) is a bronchodilator that falls under the methyl-xanthine therapeutic class. It received regulatory approval from the Health Sciences Authority (HSA) in Singapore several decades ago and remains listed as a prescription medication for maintenance therapy of asthma and COPD. As a generic product, it contains the same active molecule as branded theophylline preparations, ensuring bioequivalence and offering a cost-effective alternative for patients who need long-term oral therapy.

How Theo-24 Sr Works

Theo-24 Sr exerts its therapeutic effect through three inter-related mechanisms:

1. Phosphodiesterase inhibition - By blocking phosphodiesterase-4, the drug prevents the breakdown of cyclic adenosine monophosphate (cAMP). Elevated cAMP levels lead to relaxation of bronchial smooth muscle and inhibit the release of inflammatory mediators.
2. Adenosine-receptor antagonism - Theophylline competes with adenosine at its receptors, reducing bronchoconstriction triggered by endogenous adenosine during an asthma attack.
3. Immune modulation - At therapeutic concentrations, theophylline dampens the activity of inflammatory cells such as neutrophils and eosinophils, contributing to fewer exacerbations over time.

Pharmacokinetically, a 200 mg tablet is rapidly absorbed from the gastrointestinal tract, reaching peak plasma concentrations within 1-2 hours. The drug’s half-life in healthy adults ranges from 8 to 12 hours, but it can be prolonged in the presence of hepatic impairment, heart failure, or drug interactions (e.g., macrolide antibiotics). Because the therapeutic window is narrow-typically 10-20 µg/mL-regular blood-level monitoring is advised to avoid toxicity.

Why Theo-24 Sr Is Used for Respiratory Health Conditions

• Asthma maintenance - By maintaining baseline bronchodilation, Theo-24 Sr helps reduce nocturnal symptoms and exercise-induced bronchospasm. It is often added when inhaled corticosteroids and long-acting β₂-agonists (LABAs) are insufficient.
• COPD stable management - For patients with frequent exacerbations despite optimal inhaler therapy, oral theophylline can improve spirometric parameters and quality of life, especially in those with a predominant chronic bronchitis phenotype.
• Adjunct in acute exacerbations - Although not a first-line rescue drug, Theo-24 Sr may be continued during short-term hospitalization to maintain steady bronchodilation while inhaled therapies are intensified.

Guidelines from the Singapore Thoracic Society place theophylline as a third-line option after inhaled corticosteroids, LABAs, and leukotriene receptor antagonists. Its role is justified when cost, adherence, or inhaler technique limits the effectiveness of inhaled treatments. Compared with short-acting bronchodilators such as albuterol, Theo-24 Sr provides a longer duration of action (6-8 hours) but requires more vigilant monitoring.

Off-Label and Investigational Uses of Theo-24 Sr

Evidence from small randomized controlled trials has explored theophylline in conditions such as neonatal apnea of prematurity and certain types of chronic cough. However, none of these indications have been approved by the HSA for use in Singapore.

Off-label use should only be considered under the supervision of a qualified healthcare provider.

Is Theo-24 Sr Right for You?

Theo-24 Sr is most appropriate for adults who have:

• Persistent asthma or COPD symptoms despite optimal inhaler therapy.
• Difficulty using inhalers correctly due to dexterity or coordination issues.
• A need for an oral option that can be taken once or twice daily.

Special populations require caution. In pregnant or lactating women, theophylline crosses the placenta and enters breast milk; risk-benefit assessment is essential. Elderly patients often have reduced renal clearance, increasing the risk of toxicity. Patients with uncontrolled cardiac arrhythmias, active peptic ulcer disease, or severe hepatic impairment are generally excluded from therapy.

Taking Theo-24 Sr Effectively

• Timing: Take the pill at the same times each day to maintain stable plasma levels. Morning and early evening dosing is common.
• Food interactions: High-fat meals can delay absorption; a light snack is sufficient. Avoid concomitant caffeine-rich beverages, as they may augment stimulant-related side effects.
• Missed dose: If a dose is missed and the next scheduled dose is more than 4 hours away, skip the missed pill and resume the regular schedule. Do not double-dose.
• Travel tips: Carry a copy of the prescription and a small pill organizer. If flying, keep the medication in its original packaging to avoid customs delays.

Understanding Side Effects and How to Manage Them

Theophylline-related adverse events reflect its stimulant properties and narrow therapeutic window.

• Common, mild effects - Nausea, headache, insomnia, and mild tremor often arise from modestly elevated serum levels. Managing these symptoms can involve taking the dose earlier in the day, limiting caffeine, and ensuring adequate hydration.
• Serious concerns - Persistent vomiting, arrhythmias, seizures, and severe tachycardia indicate toxicity. Prompt measurement of serum theophylline concentration and medical evaluation are warranted. Reducing the dose or switching to an alternative therapy may be necessary.

Patients should be educated on the signs of toxicity and instructed to seek urgent care if they experience palpitations, confusion, or uncontrolled vomiting.

Buying Theo-24 Sr from Our Online Pharmacy

Why Choose Our Service?

Accessing oral respiratory medication through our online pharmacy eliminates the need for multiple clinic visits, especially for patients living outside central Singapore. Our platform integrates secure prescribing verification with discreet home delivery, ensuring that you receive authentic medication without compromising privacy.

Quality & Safety

We partner with licensed international pharmacies that adhere to Good Manufacturing Practice (GMP) standards and are regularly inspected by regulatory authorities. Every batch of Theo-24 Sr undergoes rigorous quality testing before it reaches you.

Pricing & Access

Theo-24 Sr is priced competitively, offering substantial savings compared with brand-name theophylline products. Repeat customers enjoy a Lifetime 10 % discount on all reorders, making long-term maintenance therapy more affordable.

Discreet Delivery

Orders are shipped in unmarked packaging. Express delivery typically arrives within 7 days, while standard shipping takes up to 3 weeks. Tracking information is provided for each parcel, and our customer support team is available to address any concerns.

Frequently Asked Questions

• What should I do if I experience insomnia after taking Theo-24 Sr? Insomnia is a common stimulant-related side effect. Try taking the dose earlier in the evening and limit caffeine intake after noon. If sleep disturbance persists, contact your healthcare provider for possible dose adjustment.

• Can Theo-24 Sr be taken with my inhaled corticosteroid? Yes. Theophylline is frequently prescribed alongside inhaled corticosteroids and LABAs as part of combination maintenance therapy. No known pharmacokinetic interaction exists, but regular monitoring remains advisable.

• How does Theo-24 Sr compare with leukotriene receptor antagonists? While both classes provide oral maintenance options, theophylline works by phosphodiesterase inhibition and offers bronchodilation, whereas leukotriene antagonists mainly block inflammatory pathways. Theophylline may be preferred when a stronger bronchodilatory effect is needed, but leukotriene blockers have a wider safety margin.

• Is it safe to travel internationally with Theo-24 Sr? Absolutely, provided you carry a copy of the prescription and the original packaging. Declaring the medication at customs, if required, can prevent unnecessary delays.

• Why do I need blood-level monitoring for Theo-24 Sr? The therapeutic range is narrow; serum concentrations below 10 µg/mL may be ineffective, while levels above 20 µg/mL increase the risk of toxicity. Periodic testing ensures the dose is optimal for your individual metabolism.

• Can I use Theo-24 Sr for acute asthma attacks? No. The drug has a delayed onset compared with short-acting bronchodilators such as albuterol. It is intended for long-term control, not immediate relief.

• What dietary habits affect Theo-24 Sr absorption? High-fat meals can slow absorption, while caffeine and certain antacids may increase serum concentrations, heightening side-effect risk. A balanced diet with moderate caffeine is recommended.

• Are there any drug interactions I should be aware of? Macrolide antibiotics (e.g., erythromycin), fluoroquinolones, and certain antidepressants can raise theophylline levels. Always inform your prescriber about new medications, including over-the-counter products.

• Is Theo-24 Sr covered by Singapore’s Medisave or private insurance? Coverage varies by insurer. Because it is a prescription drug, many private health plans include it under chronic disease benefits, but Medisave typically does not reimburse oral bronchodilators. Check your policy details for specific information.

• How long does it take to feel the benefits of Theo-24 Sr? Clinical improvement may be noticed within a few days, but optimal bronchodilation often requires steady-state serum levels, which are achieved after 2-3 days of regular dosing.

Glossary

Phosphodiesterase-4 (PDE-4)

An enzyme that degrades cyclic AMP; inhibition by theophylline raises intracellular cAMP, leading to smooth-muscle relaxation.

Therapeutic window

The concentration range in which a drug is effective without causing unacceptable toxicity; for theophylline, this is roughly 10-20 µg/mL.

Bronchodilator

A medication that relaxes airway smooth muscle, increasing airway diameter and improving airflow.

Disclaimer

The information provided about Theo-24 Sr is for general knowledge only. It does not replace professional medical consultation. All treatment decisions, including those regarding off-label use, should be made under the supervision of a qualified healthcare provider. We assume all readers are responsible adults capable of making informed decisions about their health. Our online pharmacy offers access to Theo-24 Sr for individuals who may have limited availability through traditional pharmacies, prescription-based insurance schemes, or who are seeking affordable generic alternatives. Always consult your doctor before starting, changing, or discontinuing any medication.

External Resources about Theo-24 Sr

• Theophylline (Theo-Dur, Theo-24, and others): Uses, Side Effects, Interactions, Pictures, Warnings & Dosing - WebMD
• Theo-24®(theophylline anhydrous) Extended-release capsules …
• Theo-24 (ENDO USA, Inc.): FDA Package Insert
• Theophylline Uses, Side Effects & Warnings
• Theophylline: Uses, Side Effects, Dosage & Reviews