Trimbow inhaler is used in Australia and is a triple therapy inhaler, containing a LAMA, a LABA and an ICS; so two bronchodilators (they work on different areas of the lungs) and an inhaled corticosteroid. You're getting all three meds that are usually given to people with COPD. Whether it's the best is dependent on how you respond. Some people will respond really well to the combination; others won't.