Long-acting bronchodilatorPrescription only
Tiotropium
Inhaler
Quick Summary
Tiotropium relaxes the airways for 24 hours.
COPD
Asthma
Medical Uses
COPD: Daily maintenance.
Asthma: Add-on in some people.
How it's taken
Inhale once a day at the same time. It isn't a reliever.
Your doctor decides the right dose for you and how long to take it.
Your doctor decides the right dose for you. Follow their instructions and the label.
Common Side Effects
Dry mouth
Common.
Constipation
Sometimes.
Blurred vision
If powder gets in eyes.
Interactions
Other anticholinergic inhalers
Avoid combining.
Critical Warnings
Glaucoma and urinary problems
Tell your doctor.
Sudden breathlessness
Black Box Warning: Use your reliever and seek help.
Sources and further reading
Last updated 21 October 2026. For more detail, see these trusted health organisations.
- Tiotropium Oral Inhalation: drug information(opens in a new tab) · MedlinePlus, US National Library of Medicine
- Tiotropium inhalers: a medicine to treat asthma and COPD(opens in a new tab) · NHS