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Detailed medicine guidance

Side effects of tiotropium inhalers

NHS medicines information on side effects of tiotropium inhalers and what you can do to cope.

About this information

This NHS content is written for people in England. Medicine names, availability, prescribing and services may differ in other countries.

Common side effects

This common side effect of tiotropium inhalers may happen in more than 1 in 100 people. There are things you can do to help cope:

Dry mouth

Try chewing sugar-free gum or sucking sugar-free sweets.

Speak to a doctor or pharmacist if this advice on how to cope does not help and a side effect is still bothering you or does not go away.

Serious side effects

It's unusual to have any serious side effects when using a tiotropium inhaler.

Call a doctor or call 111 straight away if you have:

  • difficulty sleeping (insomnia)
  • blurred vision, red eyes, or you see rings around lights – these can be signs of glaucoma
  • difficulty peeing (urinary retention)
  • a faster heartbeat or can feel your heartbeat (heart palpitations)
  • difficulty swallowing

Serious allergic reaction

In rare cases, tiotropium may cause a serious allergic reaction (anaphylaxis).

Meds New IA (H4) - serious allergic reaction

Call 999 now if:

  • your lips, mouth, throat or tongue suddenly become swollen
  • you're breathing very fast or struggling to breathe (you may become very wheezy or feel like you're choking or gasping for air)
  • your throat feels tight or you're struggling to swallow
  • your skin, tongue or lips turn blue, grey or pale (if you have black or brown skin, this may be easier to see on the palms of your hands or soles of your feet)
  • you suddenly become very confused, drowsy or dizzy
  • someone faints and cannot be woken up
  • a child is limp, floppy or not responding like they normally do (their head may fall to the side, backwards or forwards, or they may find it difficult to lift their head or focus on your face)

You or the person who's unwell may also have a rash that's swollen, raised, itchy, blistered or peeling.

These can be signs of a serious allergic reaction and may need immediate treatment in hospital.

Other side effects

These are not all the side effects of tiotropium inhalers. For a full list, see the leaflet inside your medicine packet.

View the original NHS website page ↗. Refreshed 19 August 2026.

Licensed under the Open Government Licence v3.0 ↗. MyPHU is independent and is not endorsed by the NHS.

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