Theophylline 300 mg/1 (Theophylline TABLET, EXTENDED RELEASE) 300 mg/1

Theophylline 300 mg extended-release tablets are a bronchodilator used to treat respiratory conditions like asthma and COPD. This medication helps relax and open airways for easier breathing.

Strength

300 mg/1

Pack Size

500 TABLET, EXTENDED RELEASE in 1 BOTTLE (23155-741-05)

Manufacturer / TM Owner

Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc.

Select Quantity

Pack/s

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Indications & Clinical Uses

Theophylline 300 mg extended-release tablets are commonly used to manage symptoms of chronic obstructive pulmonary disease (COPD) and asthma. This bronchodilator works by relaxing the muscles around the airways, making it easier to breathe. People often ask, 'What is Theophylline used for?' and the answer is that it is primarily used for long-term maintenance of breathing difficulties associated with these conditions.

Side Effects

Common effects of Theophylline 300 mg extended-release tablets may include nausea, headache, and insomnia. Some users might experience rapid heartbeat or jitteriness. These effects vary and are not experienced by everyone.

Precautions & Warnings

Handle Theophylline 300 mg extended-release tablets with care, especially if you have a history of heart conditions or seizures. Always follow the guidance of a healthcare professional regarding administration and storage. Keep out of reach of children.

Avoid Interactions

Theophylline 300 mg extended-release tablets may interact with certain foods, alcohol, and other medications, including some antibiotics and antifungals. It is important to discuss all current medications with a healthcare provider to avoid potential interactions.

Frequently Asked Questions

Theophylline is primarily used to treat respiratory conditions like asthma and COPD by relaxing airway muscles.

Theophylline 300 mg extended-release tablets are typically taken orally, usually once or twice daily, as directed by a healthcare professional.

Common side effects may include nausea, headache, and insomnia. Some users might experience rapid heartbeat or jitteriness.

Theophylline may interact with certain medications, so it is important to consult a healthcare provider before combining it with other drugs.

Theophylline is generally safe for long-term use when taken as prescribed by a healthcare professional.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated: 29 Jul 2026

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