Buy Generic Theo-24 Cr Online

Generic Theo-24 Cr Information

Introduction

Theo-24 Cr is a pharmaceutical product containing the active compound theophylline. It belongs to the asthma medication group and is used primarily to manage chronic airway obstruction. In Hong Kong, theophylline remains an approved therapeutic option for patients whose symptoms are not adequately controlled with inhaled corticosteroids or long‑acting bronchodilators. The product is manufactured by a licensed supplier that distributes the generic formulation to local pharmacies and qualified online retailers.

What is Theo-24 Cr?

Theo-24 Cr is a solid oral dosage form that delivers a precise amount of theophylline per tablet. The medication is classified as a methyl‑xanthine bronchodilator. It is produced by a pharmaceutical company authorized by the Hong Kong Department of Health to market generic theophylline products. While brand‑name theophylline preparations such as Theo‑Dine and Theox exist in other markets, Theo-24 Cr offers the same active ingredient at a lower price point, making it a cost‑effective alternative for adult patients.

How Theo-24 Cr Works

Theophylline exerts its therapeutic effect through two principal mechanisms:

• Phosphodiesterase inhibition – By blocking the enzyme phosphodiesterase‑4, intracellular cyclic AMP rises, leading to relaxation of bronchial smooth muscle and enhanced mucociliary clearance.
• Adenosine‑receptor antagonism – The drug competes with adenosine at A1 and A2 receptors, reducing reflex bronchoconstriction and central nervous system depression that can aggravate asthma symptoms.

Following oral ingestion, theophylline is absorbed rapidly, reaching peak plasma concentrations within 1–2 hours. The drug’s elimination half‑life ranges from 3 to 8 hours in healthy adults, but it can be prolonged in the elderly, in patients with hepatic impairment, or after cessation of smoking. Clearance is primarily hepatic, mediated by CYP1A2; therefore, co‑administration of enzyme‑modulating agents alters plasma levels and therapeutic response.

Conditions Treated with Theo-24 Cr

• Chronic asthma – Theophylline is indicated for long‑term control of persistent asthma when inhaled therapy alone is insufficient. In Hong Kong, prevalence estimates indicate that approximately 10 % of adults experience asthma symptoms, creating a substantial patient pool for adjunctive treatment.
• Chronic obstructive pulmonary disease (COPD) – The drug improves exercise tolerance and reduces exacerbation frequency in moderate to severe COPD, a condition affecting an estimated 3–4 % of Hong Kong adults over 40 years of age.
• Bronchial hyperresponsiveness – By stabilising airway smooth muscle, theophylline diminishes airway reactivity to allergens and irritants, providing symptomatic relief in patients with mixed respiratory disorders.

Theophylline’s bronchodilatory action, together with its anti‑inflammatory properties at therapeutic concentrations, underpins its utility across these indications.

Who is Theo-24 Cr For?

• Adult patients with persistent asthma who remain symptomatic despite optimal inhaled corticosteroid therapy and who are not candidates for high‑dose oral steroids.
• Individuals with moderate to severe COPD requiring an additional oral bronchodilator to improve daily function and reduce hospital admissions.
• Patients who prefer an oral regimen due to difficulty using inhaler devices or who have limited access to inhaled medication supplies.

Contra‑indications include acute asthma attacks, uncontrolled cardiac arrhythmias, seizure disorders, and known hypersensitivity to methyl‑xanthines. Caution is advised in the elderly, pregnant women, and patients with hepatic or renal impairment, as dose adjustments may be necessary.

Risks, Side Effects, and Interactions

Common

• Nausea or upset stomach
• Headache
• Insomnia or restlessness
• Palpitations or mild tachycardia

Rare

• Arrhythmias (e.g., premature ventricular contractions)
• Hypotension, especially when combined with antihypertensive agents
• Elevated liver enzymes

Serious

• Seizures, particularly at plasma concentrations > 20 µg/mL
• Severe ventricular arrhythmias (e.g., ventricular tachycardia)
• Life‑threatening allergic reactions (anaphylaxis)

Drug‑Drug Interactions

• Enzyme inhibitors (e.g., cimetidine, erythromycin, fluoroquinolones, allopurinol) increase theophylline plasma levels, raising toxicity risk.
• Enzyme inducers (e.g., rifampicin, carbamazepine, smoking) accelerate clearance, potentially leading to sub‑therapeutic concentrations.
• Concurrent use of beta‑agonists may potentiate tachycardia.
• Anticoagulants such as warfarin may have altered INR values when combined with theophylline; monitoring is recommended.

Patients should disclose all current medications, including over‑the‑counter and herbal products, to their healthcare provider before initiating Theo-24 Cr.

Practical Use: Dosing, Missed Dose, Overdose

• Standard adult dosing – 300 mg to 600 mg per day, divided into two or three doses. Individual dosing should be guided by plasma concentration monitoring, targeting a therapeutic window of 10–20 µg/mL.
• Missed dose – If a dose is forgotten and the scheduled time is still more than 6 hours away from the next dose, skip the missed dose and resume the regular schedule. Do not double‑dose to compensate.
• Overdose – Early signs include nausea, vomiting, tremor, and cardiac arrhythmia. Severe overdose may lead to seizures or coma. Immediate medical attention is required; treatment includes activated charcoal, symptomatic support, and possible administration of anticonvulsants.

Precautions – Theophylline should be taken with a moderate‑fat meal to reduce gastrointestinal irritation. Alcohol can potentiate central nervous system effects and should be avoided. Renal or hepatic impairment mandates dose reduction and more frequent therapeutic drug monitoring.

Buying Theo-24 Cr from Our Online Pharmacy

Theo-24 Cr can be purchased directly from our online pharmacy in Hong Kong. Our service offers:

• Affordable pricing – Costs are close to manufacturer‑sale price, providing a financial advantage over many retail outlets.
• Verified quality – All stock is sourced from licensed overseas manufacturers that meet Hong Kong pharmaceutical standards.
• Guaranteed delivery – We provide discreet, reliable shipping with options for 7‑day express service or approximately 3‑week regular airmail.
• Online‑only access – Patients who face limited availability in local pharmacies or lack prescription‑benefit coverage can obtain the medication safely through our pharmacy‑broker model. We collaborate with internationally accredited pharmacies, ensuring privacy and compliance with import regulations.

Our platform emphasizes patient confidentiality, secure payment processing, and transparent product information, making Theo-24 Cr a trustworthy choice for those seeking a generic theophylline solution.

FAQ

• Is Theo-24 Cr available in both brand‑name and generic forms in Hong Kong?
  Yes. Brand‑name theophylline products such as Theo‑Dine and Theox are marketed in some regions, while Theo-24 Cr represents the generic formulation that contains the identical active compound. Generic versions are generally less expensive and are approved by the Hong Kong Department of Health.

• Does Theo-24 Cr require cold storage?
  No. The medication should be kept at controlled room temperature, ideally between 15 °C and 30 °C. Exposure to excessive heat or moisture can degrade theophylline, so storage in a dry place away from direct sunlight is recommended.

• What packaging does Theo-24 Cr come in when ordered online?
  Each shipment includes sealed blister packs containing the specified number of tablets, along with an insert that outlines dosage information, safety warnings, and storage instructions. The outer parcel is discreetly labeled to protect patient privacy.

• Can Theo-24 Cr be safely imported into Hong Kong for personal use?
  Personal import of generic theophylline is permitted under Hong Kong’s “Personal Use Importation” scheme, provided the quantity does not exceed a 3‑month supply and the product is sourced from a licensed overseas pharmacy. Importers must retain the original packaging and documentation for customs inspection.

• Are there manufacturer warnings specific to Asian populations?
  Some studies suggest that Asian patients may exhibit higher plasma concentrations at standard doses due to slower CYP1A2 metabolism. Consequently, clinicians often start with the lower end of the dosing range and adjust based on therapeutic drug monitoring.

• Does Theo-24 Cr differ in formulation between regions (e.g., US vs EU vs Asia)?
  The active ingredient and tablet strength remain consistent worldwide, but excipient composition may vary to meet regional regulatory standards. For example, binders or coating agents approved in the EU may differ from those used in the United States or Asia. Such differences generally do not affect clinical efficacy but may influence tolerability in sensitive individuals.

• How does smoking cessation affect theophylline dosing?
  Smoking induces CYP1A2, increasing theophylline clearance. When a patient stops smoking, the metabolic rate slows, potentially raising plasma levels and risk of toxicity. Dose reduction and close monitoring are advisable during the first weeks after cessation.

• What is the typical onset of action for oral theophylline?
  Peak plasma concentrations occur within 1–2 hours after ingestion, and bronchodilatory effects become noticeable shortly thereafter. However, full therapeutic benefit may require several days of steady dosing to achieve stable plasma levels within the therapeutic window.

• Is therapeutic drug monitoring required for every patient taking Theo-24 Cr?
  While routine monitoring is not mandatory for all users, it is strongly recommended for patients with risk factors such as advanced age, hepatic or renal impairment, concurrent enzyme‑modulating drugs, or a history of narrow therapeutic index complications.

• Can theophylline be used during pregnancy?
  Theophylline crosses the placenta and has been associated with fetal tachycardia and low birth weight in some studies. Pregnancy category classification varies by region, and clinicians typically reserve its use for severe cases where benefits outweigh potential risks.

• What are the differences between immediate‑release and sustained‑release theophylline formulations?
  Immediate‑release tablets deliver the full dose rapidly, requiring multiple daily administrations to maintain therapeutic levels. Sustained‑release formulations provide a gradual release over 12 hours, allowing twice‑daily dosing and potentially improving adherence. Theo-24 Cr is formulated as an immediate‑release product.

• How does theophylline interact with caffeine consumption?
  Both theophylline and caffeine are methyl‑xanthines and share metabolic pathways. High caffeine intake can increase theophylline plasma concentrations, raising the risk of side effects such as insomnia and tachycardia. Patients are advised to limit caffeine-containing beverages while on therapy.

• Are there any special considerations for patients with cardiac disease?
  Theophylline may exacerbate arrhythmias or cause palpitations, especially at higher plasma concentrations. Patients with known cardiac conduction disorders, recent myocardial infarction, or uncontrolled hypertension should be evaluated carefully before initiating Theo-24 Cr.

Glossary

Therapeutic Window

The plasma concentration range in which a drug produces the desired effect without causing unacceptable toxicity. For theophylline, this range is typically 10–20 µg/mL.

Bronchodilator

A medication that relaxes the smooth muscle of the airways, increasing airflow and reducing respiratory resistance.

Plasma Concentration

The amount of drug present in the blood, expressed in micrograms per millilitre (µg/mL), used to assess dosing adequacy and safety.

CYP450 Enzyme

A family of liver enzymes responsible for the metabolism of many drugs, including theophylline (primarily CYP1A2). Variations in enzyme activity affect drug clearance and risk of interactions.

⚠️ Disclaimer

The information provided about Theo-24 Cr is for general knowledge only. It does not replace professional medical consultation. All treatment decisions 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 Cr 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.