What is Trelegy for?

Trelegy is a combination of three medications. It is made up of fluticasone, umeclidinium and vilanterol. Fluticasone belongs to corticosteroids, which can suppress inflammation in the airways. Umeclidinium can inhibit muscarinic receptors to relax the smooth muscle in the airway. Vilanterol acts on beta-2 receptors to relax smooth muscles in the airway. Therefore, the combination is used to treat asthma and chronic obstructive pulmonary disease.

How to use it?

The combination is available as a dry powder inhaler named Ellipta.


Asthma and chronic obstructive pulmonary disease
Adult and Elderly
One inhalation to be taken once daily.

What are the side effects of Trelegy?

Common side effects of Trelegy include nasopharyngitis, pharyngitis, headache, influenza, diarrhea and back pain.

Who should not take Trelegy?

  • People who are allergic to Fluticasone, Umeclidinium, Vilanterol, milk proteins or any component of the formulation.
  • Patients requiring primary treatment of status asthmaticus or other acute episodes of chronic obstructive pulmonary disease or asthma where intensive measures are required.

Pharmacist Tips:

  • Stop smoking while you are on this medication.
  • For asthma patients, know what triggers your asthma and avoid them.
  • Regular exercise at a moderate intensity.
  • Prime your inhaler before first use or when it has not been used for more than a week.
  • Use a spacer for children or elderly.

Common dosing schedule:

  • Trelegy is taken once daily, around the same time every day. For example, it can be taken in the morning before work every day.

This schedule is for reference only, adjustments may be made according to individual needs.


Some common medications Trelegy may interact with:

Trelegy may interact with many other medications. Please notify your doctor or pharmacist if you are taking the above medication, dosage adjustments might be needed.

Where to buy Trelegy in Hong Kong?

In Hong Kong, Trelegy is a prescription only medicine, and requires a prescription from a doctor to be purchased in a pharmacy. It can also be obtained from doctors. To find a pharmacy near you, refer to the list of pharmacies (“Authorized Sellers of Poisons”) from the Hong Kong Department of Health.


For more information about drug names and ingredients, you can visit Hong Kong’s Drug Office at https://www.drugoffice.gov.hk

Need more information?

For detailed information about the use of Trelegy in children, pregnancy and breastfeeding, and for questions about drug interactions, please check with your pharmacist or doctor.

Disclaimer: our goal is to provide you with the most relevant drug information and common dosage for Hong Kong. This information does not constitute medical advice. For specific treatment recommendations and advice, always discuss with your doctor or pharmacist, and follow the instructions included with your specific medicine.

Available dosage
  • 100mcg / 62.5mcg / 25mcg (Inhalants)
Drug class
Bronchodilators, Corticosteroids
Sub class
Glucocorticoids, Anticholinergics, Beta-2 Agonists (Long Acting)
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