Possible side effects
This page is specifically for patients who have been prescribed Trelegy Ellipta. If you are not a patient, please return to the public website.
Like all medicines, Trelegy Ellipta can cause side effects although not everybody will experience them. Read the patient information leaflet for full list of possible side effects. 
Allergic reactions to Trelegy Ellipta are rare (they affect less than 1 person in 1000).
If you have any of the following symptoms after taking Trelegy Ellipta stop taking this medicine and tell your doctor immediately.
- skin rash (hives) or redness
- swelling, sometimes of the face or mouth (angioedema)
- becoming very wheezy, coughing or having difficulty in breathing
- suddenly feeling weak or light headed (which may lead to collapse or loss of consciousness)
Immediate breathing difficulties
If your breathing or wheezing gets worse straight after using this medicine, stop using it and get medical help immediately.
Pneumonia – infection of the lung
Because you are using this medicine for COPD, you may be at an increased risk of developing an infection of the lungs known as pneumonia. Tell your doctor if you have any of the following while taking Trelegy Ellipta – they could be symptoms of a lung infection:
- fever or chills
- increased mucus production, change in mucus colour
- increased cough or increased breathing difficulties
What do I do if I get a side effect?
If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in the patient information leaflet. 
You can also report side effects directly via the Yellow Card Scheme at www.mhra.gov.uk/yellowcard. By reporting side effects you can help provide more information on the safety of this medicine.