Duralyn 400mg Capsule CR belongs to the class of 'Xanthine' primarily used for the management of asthma and chronic obstructive pulmonary disease (COPD). Asthma and COPD cause breathing difficulty and cough.

Duralyn 400mg Capsule CR contains Theophylline, which relaxes and opens air passages in the lungs, making it easier to breathe by reducing inflammation and increasing airflow, thereby providing relief from respiratory symptoms.

In some cases, you may experience nausea, vomiting, restlessness, tremors, headache, muscle cramps, and increased heart rate. Most of these side effects do not require medical attention and gradually resolve over time. However, if the side effects are persistent, reach out to your doctor.

Duralyn 400mg Capsule CR is a habit-forming drug, and hence, there is a risk of dependence on this medicine. So, before stopping this medicine, contact a doctor as it may cause withdrawal symptoms like anxiety, increased heart rate, tremors, or general unwell feeling.

Duralyn 400mg Capsule CR is used in the treatment of Asthma, Chronic obstructive pulmonary disease (COPD). The detailed uses of Duralyn 400mg Capsule CR are as follows:

• Asthma Management: Duralyn 400mg Capsule CR is used to treat asthma symptoms, such as wheezing, coughing, and shortness of breath.
• Chronic Obstructive Pulmonary Disease (COPD): Duralyn 400mg Capsule CR helps to manage symptoms of COPD, including bronchitis and emphysema.

• Duralyn 400mg Capsule CR should be taken on an empty stomach, at least 1 hour before or 2 hours after a meal.
• Avoid taking it with foods high in caffeine, such as cocoa, tea, coffee, and chocolate, as these foods may increase the risk of side effects.
• It is usually taken 1-4 times a day, or as prescribed by your doctor, depending on the severity of your medical condition.
• Swallow Duralyn 400mg Capsule CR as a whole with a glass of water.
• Do not crush or chew this medication.

• Duralyn 400mg Capsule CR helps relieve breathing difficulty by relaxing and widening the airways.
• It improves airflow in the lungs in patients with asthma and COPD.
• It helps reduce symptoms such as wheezing, chest tightness, and shortness of breath.
• Duralyn 400mg Capsule CR provides long-term control of chronic respiratory conditions.
• It improves oxygen supply to the body by keeping the airways open.
• Duralyn 400mg Capsule CR helps prevent asthma attacks when taken regularly as maintenance therapy.
• It enhances overall lung function and respiratory comfort.

• Do not take Duralyn 400mg Capsule CR if you are allergic to any of its components.
• Inform your doctor if you have any lung disease, muscle weakness (myasthenia gravis), a sleeping disorder or difficulty in sleeping (sleep apnoea), severe liver disease, or a problem with alcohol or other prescription or recreational drugs.
• Duralyn 400mg Capsule CR is a habit-forming drug, so there is a risk of dependence on this medicine. So, before stopping this medicine, contact a doctor as it may cause withdrawal symptoms like anxiety, increased heart rate, tremors, or general unwell feeling.
• Consult your doctor if you are pregnant or breastfeeding.
• Let your doctor know if you are taking any other medicines, including supplements or herbal products.