Aclidinium and Tiotropium interaction
Aclidinium and Tiotropium: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.
Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.
What the FDA labels say
From the Aclidinium (Tudorza Pressair) label · effective 2022-08-01
Avoid administrations of TUDORZA PRESSAIR with other anticholinergic-containing drugs.
Therefore, avoid coadministration of TUDORZA PRESSAIR with other anticholinergic-containing drugs as this may lead to an increase in anticholinergic effects.
From the Tiotropium (Spiriva Respimat) label · effective 2026-08-17
Avoid administration of SPIRIVA RESPIMAT with other anticholinergic-containing drugs.
Therefore, avoid coadministration of SPIRIVA RESPIMAT with other anticholinergic-containing drugs as this may lead to an increase in anticholinergic adverse effects [see Warnings and Precautions (5.4 , 5.5) and Adverse Reactions (6) ].
Taking more than these two? Interactions stack. Check your whole list at once; it stays in your browser.
Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.