Oxybutynin and Pyridostigmine interaction
Oxybutynin and Pyridostigmine: both prescribing labels describe an interaction that usually calls for monitoring, a dose change, or spacing the doses.
Usually manageable with monitoring or a dose change. Tell your pharmacist you take both.
What the FDA labels say
From the Oxybutynin (Oxybutynin Chloride Extended Release) label · effective 2026-01-14
Use with caution due to aggravation of symptoms: Pre-existing dementia in patients treated with cholinesterase inhibitors ( 5.2 ), Parkinson’s disease ( 5.2 ), Myasthenia gravis ( 5.3 ), and Decreased gastrointestinal motility in patients with autonomic neuropathy ( 5.4 ).
Oxybutynin chloride extended-release tablets should be used with caution in patients with preexisting dementia treated with cholinesterase inhibitors due to the risk of aggravation of symptoms.
From the Pyridostigmine (Pyridostigmine bromide) label · effective 2026-05-13
Use with caution in persons with increased risk of anticholinergic reactions, such as persons with bronchial asthma, chronic obstructive pulmonary disease, bradycardia, cardiac arrhythmias, beta blocker treatment (increased risk of anticholinergic reactions).
Increased Risk of Anticholinergic Adverse Reactions in Individuals with Certain Conditions Pulmonary Conditions Drugs that increase cholinergic activity, including pyridostigmine bromide, should be used with caution in persons with bronchial asthma or chronic obstructive pulmonary disease.
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.