Theovent-SR Tablet 400 mg contains Theophylline 400 mg, a potent long-acting bronchodilator formulated for the management of chronic respiratory disorders such as asthma, chronic obstructive pulmonary disease (COPD), and chronic bronchitis. The sustained-release (SR) formulation ensures a gradual and steady release of the drug into the bloodstream, providing extended symptom control and improving patient compliance by reducing the frequency of doses.

Theophylline is a xanthine derivative that helps relax the smooth muscles of the airways, enhancing airflow and reducing the severity of bronchospasm. Theovent-SR Tablet 400 mg is ideal for patients requiring long-term maintenance therapy to manage persistent respiratory symptoms and prevent attacks, especially during night-time or exercise-induced exacerbations.

রেজিস্টার্ড চিকিৎসকের পরামর্শ অনুযায়ী ঔষধ সেবন করুন

Composition

• Theophylline 400 mg

Mechanism of Action

Theophylline works through several mechanisms to support respiratory function:

1. Bronchodilation – Relaxes smooth muscles in the airways, widening bronchial passages and improving airflow.

2. Anti-inflammatory effect – Reduces inflammation in the airways by inhibiting the release of pro-inflammatory mediators.

3. Diaphragm stimulation – Enhances the contractility of the diaphragm, improving lung ventilation and oxygenation.

4. Central respiratory stimulation – Increases the responsiveness of respiratory centers in the brain to carbon dioxide, supporting more effective breathing patterns.

The sustained-release design maintains therapeutic drug levels for 12–24 hours, providing prolonged relief from symptoms and reducing the risk of breakthrough attacks.

Indications

Theovent-SR Tablet 400 mg is indicated for:

• Long-term management of chronic asthma

• Chronic obstructive pulmonary disease (COPD)

• Chronic bronchitis with airway obstruction

• Prevention of nocturnal and exercise-induced asthma symptoms

It is used as a maintenance therapy under the guidance of a healthcare professional and should be part of a comprehensive treatment plan including lifestyle management and other prescribed respiratory medications.

Dosage and Administration

• The dose of Theovent-SR 400 mg is individualized according to age, body weight, severity of symptoms, and physician recommendations.

• Usually taken once or twice daily, depending on clinical assessment.

• Swallow the tablet whole with water; do not crush or chew.

• Take at consistent times daily to maintain stable drug levels.

• Regular monitoring of serum Theophylline levels is recommended to avoid toxicity and ensure efficacy.

Benefits

• Provides long-acting bronchodilation and symptom control

• Improves airflow, breathing efficiency, and oxygenation

• Reduces the frequency and severity of asthma and COPD attacks

• Supports improved exercise tolerance and quality of life

• Convenient sustained-release dosing reduces pill burden

Precautions

• Monitor serum Theophylline levels during prolonged therapy to avoid toxicity.

• Use cautiously in patients with heart disease, kidney or liver impairment.

• Avoid concurrent use with medications that may interact with Theophylline, such as certain antibiotics, anticonvulsants, and cimetidine.

• Not recommended during pregnancy or breastfeeding unless specifically prescribed.

• Inform the physician of any history of seizures, arrhythmias, peptic ulcers, or hyperthyroidism.

  রেজিস্টার্ড চিকিৎসকের পরামর্শ অনুযায়ী ঔষধ সেবন করুন

Possible Side Effects

Common side effects include:

• Nausea and vomiting

• Headache

• Insomnia or restlessness

• Palpitations

• Mild gastrointestinal discomfort

Serious side effects requiring immediate medical attention:

• Severe irregular heartbeat

• Seizures

• Chest pain or shortness of breath

Storage

• Store below 30°C

• Keep in a cool, dry place away from sunlight and moisture

• Keep the container tightly closed

• Keep out of reach of children

Theovent-SR Tablet 400 mg is a trusted sustained-release bronchodilator for long-term management of asthma, COPD, and chronic bronchitis, providing effective symptom control under medical supervision.