Roflumilast is a phosphodiesterase-4 inhibitor used to reduce the frequency of severe flare-ups in patients with severe COPD.
Roflumilast belongs to a class of medicines known as phosphodiesterase-4 (PDE-4) inhibitors. Its main purpose is to reduce inflammation inside the lungs, helping to keep breathing problems under control. The active ingredient appears in products such as Daliresp and generic roflumilast tablets that are supplied in Hong Kong.
In Hong Kong, the most widely recognised brand that contains roflumilast is Daliresp. It is supplied as oral tablets, usually in a single strength of 500 µg. In addition, several generic manufacturers market roflumilast under the simple name Roflumilast; these are also oral tablets and are available in the same strength. Both the branded and generic versions are listed on the Pharmacy and Poisons Board’s register, meaning they meet local safety standards. Patients may find them in hospitals, private clinics or accredited pharmacies throughout the territory.
Roflumilast is primarily used for people with chronic obstructive pulmonary disease (COPD) who experience frequent worsening episodes, known as exacerbations. By lowering airway inflammation, the medicine helps to:
The drug is intended for adult patients with severe COPD who have a history of exacerbations despite standard therapy. While its approved use in Hong Kong focuses on COPD, clinicians may occasionally consider it for related inflammatory lung conditions, though those uses would be off-label.
Roflumilast blocks the activity of the enzyme PDE-4. This action raises the level of a molecule called cyclic AMP inside inflammatory cells, which in turn dampens the release of substances that cause swelling and irritation in the airways. The result is a gradual reduction in lung inflammation, often noticeable within a few weeks of regular use. Because it works on the inflammatory pathway rather than directly opening the airways, the effect builds up over time rather than delivering immediate relief.
People taking roflumilast often notice mild, short-lasting reactions such as:
These symptoms usually lessen as the body adapts to the medication.
Although rare, some users may experience more severe problems that need urgent medical attention:
If any of these occur, seek immediate help at an accident and emergency department.
Certain groups should discuss the use of roflumilast with their healthcare provider before starting:
Roflumilast can interact with other medicines and lifestyle factors:
For a complete list of possible interactions, refer to the specific product’s information leaflets.
Store roflumilast tablets at room temperature, away from moisture and direct sunlight. The medication is meant for longer-term management of COPD, so treatment may continue for many months or years, depending on individual response. Always read the packaging that comes with your particular product and follow the instructions provided. Remember that each brand or generic version may have slightly different guidance, so the details on your label are the most reliable source.
Phosphodiesterase-4 (PDE-4) inhibitor: A type of drug that reduces inflammation by blocking an enzyme involved in the inflammatory process.
COPD exacerbation: A sudden worsening of chronic obstructive pulmonary disease symptoms that often requires additional treatment or hospitalisation.
Cyclic AMP: A natural molecule inside cells that helps regulate inflammation; higher levels typically reduce swelling.
This article offers general educational information about roflumilast as an active substance used in various medicines. Its purpose is to help patients better understand the ingredient and the conditions it is used to treat. It is not a substitute for professional medical advice or for the specific instructions provided with individual products. Medicines containing roflumilast may differ in formulation, strength, and directions for use. Always follow the labeling of your particular medication and adhere to the guidance of your healthcare provider for complete information on proper use, dosage, and safety.
