Atropine and pralidoxime and Pyridostigmine interaction
Atropine and pralidoxime 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
WARNING: RISKS WITH IMPROPER USE OF PYRIDOSTIGMINE BROMIDE After Exposure to Soman, Use Atropine and Pralidoxime Pyridostigmine bromide is for use as a pretreatment for exposure to soman nerve agent.
The efficacy of pyridostigmine bromide is dependent upon the rapid use of atropine and pralidoxime (2-PAM) after soman exposure [see Dosage and Administration (2.1) and Warnings and Precautions (5.1) ].
Individuals must not rely solely upon pretreatment with pyridostigmine bromide and on the antidotes atropine and pralidoxime (2-PAM) to provide complete protection from poisoning by soman nerve agent [see Dosage and Administration (2.1) ] .
After Exposure to Soman, Use Atropine and Pralidoxime Pyridostigmine bromide is for use as a pretreatment for exposure to soman nerve agent.
Risk of Improper Use of Pyridostigmine Bromide Risk of Not Stopping Pyridostigmine Bromide and Using Atropine and Pralidoxime in the Event of Soman Exposure Pyridostigmine bromide is for use as pretreatment for exposure to soman nerve agent and must not be taken after exposure to soman nerve agent [see Dosage and Administration (2.1 , 2.2) ].
From the Atropine and pralidoxime (ATNAA atropine and pralidoxime chloride Auto-Injector) label · effective 2022-07-18
…ATNAA reactivates cholinesterases and succinylcholine and mivacurium are metabolized by cholinesterases, service members poisoned by susceptible organophosphorus nerve agents having anticholinesterase activity who have received ATNAA may exhibit accelerated reversal of the neuromuscular blocking effects of succinylcholine and mivacurium (relative to poisoned service…
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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.