Galantamine and Pyridostigmine interaction
Galantamine and Pyridostigmine: 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 Pyridostigmine (Pyridostigmine bromide) label · effective 2026-05-13
Pyridostigmine bromide extended-release tablets are contraindicated in patients with: Mechanical intestinal or urinary obstruction Known hypersensitivity to pyridostigmine or other anticholinesterase agents Mechanical intestinal or urinary obstruction.
Known hypersensitivity to pyridostigmine or other anticholinesterase agents.
Other Anticholinesterase Drugs Concomitant use of anticholinesterase drugs used in the treatment of glaucoma and pyridostigmine bromide may have an additive effect that may cause or exacerbate problems with night vision.
From the Galantamine label · effective 2026-06-01
Gastrointestinal Conditions Through their primary action, cholinomimetics may be expected to increase gastric acid secretion due to increased cholinergic activity.
An increase in cholinergic tone may worsen symptoms related to extrapyramidal disorders [see Adverse Reactions (6.2)].
Cholinomimetics may cause bladder outflow obstruction ( 5.5 )
Genitourinary Conditions Although this was not observed in clinical trials with galantamine, cholinomimetics may cause bladder outflow obstruction.
Pulmonary Conditions Because of its cholinomimetic action, galantamine should be prescribed with care to patients with a history of severe asthma or obstructive pulmonary disease.
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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.