--- title: Buy Theo-24 Cr (Theophylline) 400mg Pills Online description: Theo-24 Cr (Theophylline) is a controlled-release bronchodilator for asthma and COPD. Order 400mg pills from our secure online pharmacy. type: product language: en url: https://liabilis.com/order-theo-24-cr-online-en.html availability: in_stock shipping: - type: Standard Airmail price: 10.00 currency: USD area: Worldwide time: 14-21 days - type: Tracked Express price: 30.00 currency: USD area: Worldwide tracking: true time: 5-9 days price_min: 38.99 price_max: 243.19 currency: USD offers: - name: 400mg x 30 pills price: 38.99 - name: 400mg x 60 pills price: 56.76 - name: 400mg x 90 pills price: 74.25 - name: 400mg x 120 pills price: 101.99 - name: 400mg x 180 pills price: 138.99 - name: 400mg x 360 pills price: 243.19 --- # Buy Theo-24 Cr (Theophylline) 400mg Pills Online Theo-24 Cr, containing the active ingredient Theophylline, is a controlled-release bronchodilator medication. It is primarily used to treat and prevent symptoms of asthma, chronic bronchitis, emphysema, and other lung diseases by relaxing and opening air passages in the lungs. This medication is designed for adults with chronic respiratory conditions. Our online pharmacy offers reliable access to generic Theo-24 Cr in 400mg controlled-release pills. ## Pricing and Options | Dosage | Pack Size | Price (USD) | Price Per Pill | Status | | :--- | :--- | :--- | :--- | :--- | | **400mg** | 30 pills | **$38.99** | $1.31 | In Stock | | **400mg** | 60 pills | **$56.76** | $0.95 | In Stock | | **400mg** | 90 pills | **$74.25** | $0.83 | In Stock | | **400mg** | 120 pills | **$101.99** | $0.85 | In Stock | | **400mg** | 180 pills | **$138.99** | $0.77 | In Stock | | **400mg** | 360 pills | **$243.19** | $0.67 | In Stock | [Buy Now](https://liabilis.com/order-theo-24-cr-online-en.html) ## Introduction Theo-24 Cr is a generic oral medication whose active ingredient is theophylline. Theophylline belongs to the class of methylxanthine bronchodilators and is primarily used to improve breathing in chronic obstructive pulmonary disease (COPD) and certain types of asthma. Theo-24 Cr is supplied as a 400 mg pill, allowing convenient once- or twice-daily dosing. While the drug has a long history of use, it remains a valuable option for patients who need an oral bronchodilator and who may benefit from a lower-cost alternative to brand-name products. ## Quick Reference Facts **Active Ingredient** : Theophylline **Form** : pill 400 mg **Primary Uses** : • Maintenance therapy for chronic obstructive pulmonary disease (COPD) : • Adjunct treatment for asthma when inhaled therapy alone is insufficient ## What is Theo-24 Cr? Theo-24 Cr is the generic version of medications containing the active compound theophylline. It is classified as a methylxanthine bronchodilator, a drug class that relaxes airway smooth muscle and modestly reduces inflammation. Theophylline was first isolated from tea leaves in the early 20th century and later developed into a therapeutic agent for respiratory disease. Because Theo-24 Cr is a generic product, it is manufactured by several certified pharmaceutical companies that meet international quality standards. It is the generic equivalent of brand-name preparations such as Theodur, Uniphyl, and Theobid, offering the same therapeutic effect at a reduced price. ## How Theo-24 Cr Works Theophylline exerts its bronchodilator effect primarily by inhibiting phosphodiesterase (PDE) enzymes, especially PDE-3 and PDE-4. This inhibition raises intracellular cyclic adenosine monophosphate (cAMP) levels, leading to relaxation of bronchial smooth muscle and a modest anti-inflammatory response. In addition, theophylline antagonizes adenosine receptors (A₁ and A₂), which contributes to bronchodilation and may improve respiratory drive. After oral ingestion, Theo-24 Cr is absorbed from the gastrointestinal tract with a bioavailability of roughly 80 %. Peak plasma concentrations occur within 1-2 hours, and the drug’s half-life in healthy adults ranges from 6 to 9 hours, although it can be prolonged in patients with hepatic impairment, heart failure, or smoking cessation. Theophylline is metabolized by hepatic cytochrome P450 enzymes (CYP1A2, CYP2E1) and eliminated primarily in the urine, making serum level monitoring useful for dose optimization. ## Conditions Treated with Theo-24 Cr - **Chronic Obstructive Pulmonary Disease (COPD)** - Theophylline improves airflow limitation and reduces the frequency of exacerbations when added to inhaled bronchodilators and steroids. - **Bronchial Asthma (maintenance therapy)** - For patients whose asthma remains uncontrolled despite inhaled corticosteroids and long-acting β₂-agonists, theophylline provides an oral adjunct that can decrease nighttime symptoms. - **Exercise-induced bronchoconstriction** - In some adults, a low-dose theophylline regimen can blunt the decline in forced expiratory volume after strenuous activity. Each indication is supported by regulatory approvals in multiple jurisdictions, including the United States FDA and the European Medicines Agency, for oral theophylline products. ## Is Theo-24 Cr the Right Medication for You? Theo-24 Cr is most appropriate for adults who require an oral bronchodilator either because inhaled therapy alone is insufficient or when inhaler technique is problematic. Ideal candidates include patients with moderate to severe COPD, those with persistent asthma symptoms despite optimal inhaled therapy, and individuals who prefer a once- or twice-daily pill. Contraindications include known hypersensitivity to theophylline or other methylxanthines, uncontrolled cardiac arrhythmias, recent myocardial infarction, and active seizure disorders. Caution is advised in patients with liver disease, congestive heart failure, severe infection, or those taking drugs that strongly inhibit CYP1A2 (e.g., fluvoxamine, ciprofloxacin) because serum theophylline levels may rise to toxic ranges. Ultimately, a clinician should evaluate lung function, comorbidities, and potential drug interactions before initiating therapy. ## Buying Theo-24 Cr from [our online pharmacy](https://liabilis.com/order-theo-24-cr-online-en.html) ### Why Choose Our Service? Accessing an affordable oral bronchodilator can be challenging when insurance formularies limit options. Our pharmacy service offers a streamlined way to obtain Theo-24 Cr at prices close to wholesale cost, helping patients avoid unnecessary expense. ### Quality & Safety Assurance We partner with licensed international pharmacies to ensure quality and authenticity. All batches of Theo-24 Cr are sourced from GMP-certified manufacturers and undergo third-party verification before shipment. ### Pricing & Access Because Theo-24 Cr is a generic formulation, it costs significantly less than brand-name equivalents such as Theodur or Uniphyl. Our platform provides transparent pricing, and bulk ordering options can further reduce the unit price for long-term users. ### Discreet Delivery Orders are packed in unmarked packaging and shipped via a trusted carrier. Express delivery typically arrives within 7 days, while standard airmail reaches most destinations in approximately three weeks. Privacy is maintained throughout the process, from order placement to receipt. ## Use: Dosing, Missed Dose, Overdose - **Standard dosing** - For most adults, the initial dose is 200 mg twice daily (total 400 mg per day). Doses may be adjusted to maintain serum concentrations between 10-20 µg/mL, as determined by therapeutic drug monitoring. - **Missed dose** - If a dose is forgotten and the scheduled time is less than 6 hours away, take the missed pill as soon as remembered. If the next dose is imminent, skip the missed tablet and resume the regular schedule. Do not double-dose. - **Overdose** - Symptoms may include nausea, vomiting, rapid heart rate, seizures, or severe arrhythmias. Seek emergency medical care immediately. Treatment focuses on supportive care, activated charcoal if ingestion is recent, and monitoring of cardiac rhythm and serum theophylline levels. - **Administration tips** - Theo-24 Cr can be taken with or without food; however, a high-fat meal may delay absorption slightly. Avoid consuming large amounts of caffeine or alcohol, as they can potentiate stimulant side effects. Do not operate heavy machinery until you know how the medication affects you. ## Safety Information ### ⚠️ Who Should Not Take Theo-24 Cr - Known hypersensitivity to theophylline or any methylxanthine - Uncontrolled cardiac arrhythmias (e.g., atrial fibrillation, ventricular tachycardia) - Recent myocardial infarction (< 3 months) - Active seizure disorder not controlled by medication - Severe hepatic impairment (Child-Pugh C) ### Common Side Effects - Nausea, stomach upset, or mild vomiting (≈ 15 % of patients) - Headache or dizziness (≈ 10 %) - Insomnia or nervousness, especially when taken later in the day - Mild tremor These effects are usually transient and can be mitigated by dose adjustment or taking the medication with food. ### Serious Side Effects (Seek Immediate Medical Help) - Persistent vomiting or diarrhea leading to dehydration - Cardiac palpitations, rapid heart rate, or new-onset arrhythmias - Seizures or muscle twitches - Severe rash, itching, or signs of an allergic reaction (e.g., swelling, difficulty breathing) If any of these occur, discontinue Theo-24 Cr and obtain urgent medical attention. ### Drug & Food Interactions - **CYP1A2 inhibitors** (e.g., fluvoxamine, ciprofloxacin, cimetidine) → increase serum theophylline; dose reduction may be required. - **CYP1A2 inducers** (e.g., smoking, carbamazepine, rifampin) → lower serum levels; dose increase may be needed. - **Macrolide antibiotics** (e.g., erythromycin, clarithromycin) → elevate theophylline concentrations. - **Caffeine-rich foods/beverages** → additive stimulant effect, may worsen insomnia or tremor. - **Anticoagulants** (e.g., warfarin) → theophylline can enhance anticoagulant effect; monitor INR closely. Patients should provide a complete medication list to their prescriber before starting Theo-24 Cr. ## Off-Label and Investigational Uses of Theo-24 Cr - **Neonatal apnea** - Clinical studies have evaluated low-dose theophylline for preventing apnea of prematurity, though this use is approved only for pediatric formulations. - **Obstructive sleep apnea (adult)** - Small trials suggest theophylline may modestly reduce apnea-hypopnea index, but evidence is limited and not FDA-approved for this indication. - **Bronchopulmonary dysplasia** - Investigational research explores chronic theophylline therapy to improve lung function in preterm infants. All off-label applications should be undertaken only under direct supervision of a qualified healthcare professional, with careful monitoring for adverse effects. ## Storage & Handling - Store Theo-24 Cr at 20-25 °C (68-77 °F) in a dry place, away from direct sunlight and moisture. - Keep the container tightly closed to protect from humidity. - Do not use the medication after the printed expiration date. - Dispose of unused tablets according to local pharmacy waste guidelines or return them to a take-back program. ## Frequently Asked Questions **Practical Use & Lifestyle** - **Can I travel internationally with Theo-24 Cr?** Yes, but keep the medication in its original packaging with a copy of the prescription or a physician’s note, as some countries require documentation for importation of prescription drugs. - **Will caffeine consumption affect my therapy?** Caffeine is a methylxanthine and can increase stimulant side effects such as insomnia or tachycardia. Limit high-caffeine drinks while on Theo-24 Cr, especially in the evening. - **Is it safe to take Theo-24 Cr while exercising?** The medication does not impair physical performance, but if you experience palpitations or dizziness during activity, discuss dose adjustment with your clinician. **Product & Formulation Details** - **What does a Theo-24 Cr tablet look like?** Generic 400 mg theophylline tablets are typically white, round, and may have a score line for splitting. Appearance can vary between manufacturers. - **Are any inactive ingredients likely to cause allergies?** Common excipients include lactose, magnesium stearate, and microcrystalline cellulose. Patients with lactose intolerance or known excipient allergies should verify the specific formulation with the supplier. **Regulatory & Safety Nuances** - **Will Theo-24 Cr appear on a standard drug test for athletes?** Theophylline is not listed as a prohibited substance by major anti-doping agencies, but some sport-specific panels may screen for stimulants. Check the applicable testing protocol. - **Is Theo-24 Cr approved for use during pregnancy?** Theophylline is classified as Category C in the United States, indicating risk cannot be ruled out. Pregnant patients should only use it when the potential benefit justifies the potential fetal risk, under medical supervision. **Scientific & Clinical Curiosity** - **What major clinical trial established theophylline’s role in COPD?** The 1976 “Theophylline Study Group” demonstrated modest improvements in lung function and reduced exacerbations compared with placebo, forming the basis for its inclusion in COPD guidelines. - **How does the potency of Theo-24 Cr compare to inhaled bronchodilators?** Oral theophylline provides systemic bronchodilation with a slower onset (1-2 hours) and lower peak effect than short-acting inhaled β₂-agonists, which act within minutes. It is therefore used as a maintenance, not rescue, therapy. ## Glossary **Methylxanthine** : A class of compounds derived from xanthine, including caffeine and theophylline, that act as bronchodilators and central nervous system stimulants. **Therapeutic Drug Monitoring (TDM)** : Measurement of specific drug concentrations in blood at designated intervals to maintain a constant plasma level within a target range, optimizing efficacy while minimizing toxicity. **Cytochrome P450 (CYP) enzymes** : A family of liver enzymes responsible for the metabolism of many drugs; inhibition or induction of these enzymes can markedly alter drug levels. **Bronchodilator** : A medication that relaxes the muscles of the airway walls, widening the airways and improving airflow. **Half-life** : The time required for the plasma concentration of a drug to decline by 50 % after reaching steady state. ## Disclaimer The information provided about **Theo-24 Cr** is intended for general educational purposes only and does not substitute personalized medical consultation. All therapeutic choices, including any off-label applications, should be made under the guidance of a qualified healthcare provider. Readers are presumed to be responsible adults capable of making informed health decisions. Our pharmacy service supplies Theo-24 Cr for individuals who encounter limited availability through conventional pharmacies, face insurance barriers, or are seeking cost-effective generic alternatives. Always discuss with your physician before initiating, altering, or stopping any medication.