Doxofylline 400 mg Uses, Dosage, Side Effects & How to Take

What Is Doxofylline 400 mg Tablet?

Doxofylline 400 mg tablet contains 400 mg of doxofylline, a methylxanthine-derived bronchodilator. It is primarily prescribed as part of treatment for obstructive airway conditions such as asthma and COPD. Unlike an antibiotic, doxofylline does not treat bacterial infections. Its purpose is to help improve airflow and relieve respiratory symptoms. 

Doxofylline 400 mg Tablet: Quick Product Overview

• Active ingredient: Doxofylline 400 mg
• Medicine type: Oral bronchodilator
• Common therapeutic uses: Asthma and COPD
• Prescription status: Prescription medicine in current Indian pharmacy listings
• Typical purpose: Helps relax and widen the airways
• Dosage: Must be individualized by the prescribing doctor
• Form: Tablet
• Storage: Follow the storage instructions printed on the specific product packaging; some current 400 mg listings specify storage below 25–30°C. 

Doxofylline 400 mg Tablet Uses

The main doxofylline 400 mg tablet uses are related to obstructive respiratory diseases.

1. Asthma

Doxofylline may be prescribed to help control breathing symptoms associated with asthma. By promoting relaxation of airway smooth muscle, it can help improve airflow and may reduce symptoms such as wheezing, chest tightness and breathlessness in appropriately selected patients.

It is important to understand that prescribed oral doxofylline is generally part of an overall asthma-management plan. It should not automatically be considered a replacement for a patient's prescribed rescue inhaler or other controller treatment.

2. Chronic Obstructive Pulmonary Disease (COPD)

Doxofylline is also used in COPD to help relieve airflow limitation and respiratory symptoms. Current product information describes its role in helping with symptoms such as breathlessness and cough by relaxing the airway muscles. 

The appropriate treatment for COPD varies considerably between patients, so doxofylline should be used only when recommended by a healthcare professional.

Key Benefits of Doxofylline 400 mg Tablet

The potential benefits of doxofylline 400 mg tablet are primarily related to improved airway function and symptomatic relief.

Helps Open the Airways

Doxofylline promotes bronchodilation, helping relax the muscles surrounding the airways. This can make airflow easier for people with conditions involving reversible or persistent airway obstruction. 

May Reduce Breathing Difficulty

When prescribed appropriately, doxofylline may help reduce respiratory symptoms such as wheezing and breathlessness associated with asthma or COPD. The degree of benefit depends on the patient's condition and response to treatment.

Oral Tablet Convenience

As an oral medicine, the 400 mg tablet provides a convenient option for patients for whom a doctor has selected oral bronchodilator therapy. Current product information indicates that certain doxofylline 400 mg tablets can be taken with or without food, although patients should follow the instructions for their particular prescription and product. 

Doxofylline 400 mg Tablet Side Effects

Like other medicines, doxofylline 400 mg tablet can cause side effects, although not everyone experiences them.

Commonly reported adverse effects include:

• Nausea
• Vomiting
• Abdominal or stomach discomfort
• Headache
• Irritability or restlessness
• Difficulty sleeping or insomnia
• Increased heart rate
• Palpitations or extrasystoles

Many mild side effects may improve as the body adjusts to treatment. However, persistent, troublesome or severe symptoms should be discussed with a doctor.

Seek prompt medical attention if you develop severe or unusual symptoms, particularly significant palpitations, severe vomiting, marked weakness, confusion, or symptoms suggesting a serious allergic reaction.

How to Take Doxofylline 400 mg Tablet

Take doxofylline 400 mg tablet exactly as prescribed by your doctor. Do not increase the dose, take extra tablets, or extend treatment without medical advice.

Current product information states that some 400 mg formulations may be taken with or without food. If the medicine causes stomach discomfort, ask your healthcare professional whether taking it with food is appropriate for your particular prescription. 

If you miss a dose, follow the instructions provided with your prescription. Do not routinely double the next dose to compensate for a missed tablet unless specifically instructed by a healthcare professional.

Important: Doxofylline is not intended to provide immediate emergency relief from a sudden, severe asthma attack. Patients with asthma should continue to keep their prescribed emergency/rescue medicine available. 

Who Should Use Doxofylline 400 mg With Caution?

Before starting treatment, tell your doctor if you have heart disease, liver disease, kidney problems, or other significant medical conditions. Also provide a complete list of medicines, supplements and other products you take because drug interactions can affect treatment. Pregnancy and breastfeeding should also be discussed with a healthcare professional before use. 

It is also sensible to limit excessive caffeine while taking doxofylline if your healthcare professional advises this, because caffeine-containing products may increase certain stimulant-like adverse effects.

Doxofylline 400 mg Tablet vs. Theophylline

Doxofylline and theophylline belong to the broader methylxanthine family, but they are not identical medicines. Clinical literature has investigated doxofylline as an alternative to theophylline, with some studies reporting comparable improvements in respiratory outcomes and potentially better gastrointestinal tolerability. 

However, this does not mean that one medicine is automatically better for every patient. A doctor should determine which treatment is appropriate based on the patient's diagnosis, symptoms, other medicines and medical history.

Conclusion

Doxofylline 400 mg tablet is a prescription bronchodilator commonly used in the management of asthma and COPD. Its main therapeutic benefit is helping relax airway muscles and improve airflow, which may provide relief from symptoms such as breathlessness, wheezing and cough in suitable patients. 

The medicine can cause side effects including nausea, vomiting, stomach discomfort, headache, insomnia, irritability and increased heart rate. Therefore, it should be taken at the prescribed dose rather than self-medicated. Doxofylline should also not be relied upon as emergency treatment for a sudden severe breathing attack.

For buyers, the most important points are to verify the 400 mg strength, check the manufacturer's information, purchase through a legitimate pharmacy, compare the current price and use the medicine only according to a valid healthcare professional's instructions.

Frequently Asked Questions About Doxofylline 400 mg Tablet

1. What is doxofylline 400 mg tablet used for?

Doxofylline 400 mg tablet is primarily used for asthma and chronic obstructive pulmonary disease (COPD). It works as a bronchodilator by helping relax airway muscles and improve airflow. 

2. What are the benefits of doxofylline 400 mg tablet?

The main potential benefit is improved airflow through relaxed airway muscles. In appropriate patients, this may help relieve symptoms such as breathlessness, wheezing, chest tightness and cough associated with asthma or COPD. 

3. What are the side effects of doxofylline 400 mg tablet?

Commonly reported side effects include nausea, vomiting, abdominal discomfort, headache, irritability, insomnia and increased heart rate. Contact your doctor if side effects are persistent, severe or concerning. 

4. Is doxofylline 400 mg an antibiotic?

No. Doxofylline is not an antibiotic. It is a bronchodilator used for respiratory conditions such as asthma and COPD; it does not treat bacterial infections. 

5. Can I take doxofylline 400 mg for sudden breathing difficulty?

Do not use doxofylline 400 mg as a substitute for prescribed emergency/rescue treatment. Current product information specifically notes that it does not provide immediate relief for an already-started breathing emergency. Follow your asthma/COPD action plan and seek urgent medical care when breathing difficulty is severe. 

6. Can doxofylline 400 mg be taken with food?

Some current 400 mg product information states that it can be taken with or without food. Follow the instructions given for your specific product and prescription. 

7. Is doxofylline 400 mg safe for everyone?

No medicine is appropriate for everyone. Patients with heart, liver or kidney problems, as well as people who are pregnant or breastfeeding or taking other medicines, should discuss doxofylline with a healthcare professional before use. 

8. How much does doxofylline 400 mg tablet cost in India?

The price varies by brand, pack size and pharmacy. Current September 2026 listings show different prices for 400 mg doxofylline brands, so buyers should verify the current MRP and final purchase price before ordering.

9. Doxofylline how many times a day?

Doxofylline is typically taken once or twice daily, as prescribed by your doctor for your condition.