Mechanism
How Trelegy works
Combines inhaled corticosteroid anti-inflammatory activity (fluticasone), long-acting muscarinic antagonism (umeclidinium), and long-acting beta agonist bronchodilation (vilanterol) in a single inhaler.
← Respiratory Pharmacology
COMBONBRC High Yield5/5 Importance
Trelegy Respiratory Pharmacology Guide
The complete learning guide for class, mechanism, indications, adverse effects, kinetics, exam traps, and NBRC-style respiratory pharmacology.
Trelegy contains fluticasone (ICS), umeclidinium (LAMA), and vilanterol (LABA). It provides airway inflammation control, muscarinic blockade, and long-acting bronchodilation in a single inhaler. Students should recognize Trelegy as triple therapy and identify all three component classes.
Clinical Pharmacology
Understand the medication before memorizing it
Start with mechanism, clinical pearls, onset, peak, duration, and deeper pharmacology explanations so the rest of the page has context.
Clinical Pearl
What to remember
When LABA/LAMA therapy is not enough, triple therapy may be the next escalation step.
Kinetics
Onset, peak, and duration
1
Onset
Maintenance therapy
2
Peak
Several days to weeks
3
Duration
Approximately 24 hours
Clinical Practice
How this medication is used at the bedside
Review common indications, expected adverse effects, contraindications, cautions, and safety issues in a clinically useful order.
Quick facts
- Subclass
- ICS/LAMA/LABA
- NBRC importance
- 5/5
- Difficulty
- 4/5
- Brands
- Trelegy Ellipta
5/5
NBRC importance
15
Study facts
0
Practice questions
2026
Updated
Common indications
- COPD maintenance therapy
- COPD with frequent exacerbations
- Selected severe asthma patients requiring triple therapy
Adverse effects
- Oral thrush
- Dysphonia
- Dry mouth
- Urinary retention
- Palpitations
- Tachycardia
- Headache
Contraindications
- Hypersensitivity to formulation components
Cautions and safety issues
- Not for acute bronchospasm
- Not a rescue inhaler
- Monitor for oral candidiasis
- Use caution with glaucoma and urinary retention
RT & NBRC Mastery
Respiratory therapy exam and bedside mastery
Move from reference knowledge into board-style reasoning, adaptive practice, common distractors, and high-yield clinical scenarios.
NBRC-style question
NBRC-style pharmacology review
A patient scenario involves copd patient with frequent exacerbations despite dual therapy. Which medication concept should the respiratory therapy student recognize?
High-yield answer
Trelegy = Triple Therapy
Interactive practice
The Adaptive Exam Simulator
Use the complete guide on this page to learn the medication, then switch into the adaptive simulator to test yourself with scored practice, missed-concept review, and NBRC-style clinical reasoning.
ClassPractice
MechanismPractice
Clinical usePractice
Adverse effectsPractice
ScenarioPractice
Common Exam Traps
These are the answer choices, mechanisms, or medication classes most commonly confused with this medication on RT school and NBRC-style exams.
- ICS/LABA
- LAMA only
- SABA/SAMA combination
- Rescue inhaler
- ICS only
High-Yield Clinical Scenarios
- COPD patient with frequent exacerbations despite dual therapy
- Medication escalation question
- Triple therapy identification
- Component medication recognition
Guidelines
Guideline-based clinical context
Connect medication facts to the larger respiratory care guidelines, disease-state recommendations, and clinical decision frameworks.
Study Tools
Practice, recall, and retention
Use mini cases, flashcards, FAQs, and related concepts to turn the medication page into a high-retention study experience.
Practice Questions
Complete question bank
Work through 0 board-style and clinical reasoning questions for this medication, organized by concept area.
Related study paths
Continue building pharmacology mastery
Use this medication page as a reference, then reinforce it with interactive practice and related PulmTools study resources.