Drug interactions
Atropine + Pralidoxime chloride
Severity: Moderate
Atropine and Pralidoxime chloride: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
These drugs are used together in organophosphate poisoning. When pralidoxime is given late or atropine doses are large, signs of atropinization such as flushing, dry mouth, tachycardia and mydriasis may appear sooner than expected. Overshooting atropine can cause delirium and hyperthermia.
What this interaction means in plain words
Atropine and Pralidoxime chloride can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Atropine belongs to Miscellaneous; Pralidoxime chloride belongs to Miscellaneous.
Why it happens
Pralidoxime reactivates acetylcholinesterase, which changes the cholinergic balance so that atropine's antimuscarinic effects become apparent earlier.
What to do
Titrate atropine to drying of bronchial secretions and heart rate rather than fixed dosing, and watch for signs of atropine toxicity. Give pralidoxime as early as possible.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Pralidoxime chloride
Other interactions of Atropine
- Atropine + Eluxadoline Major
- Atropine + Henbane Major
- Atropine + Pramlintide Major
- Abobotulinumtoxina + Atropine Moderate
- Aclidinium + Atropine Moderate
- Amantadine + Atropine Moderate
Frequently asked questions
Can I take Atropine with Pralidoxime chloride?
MediHelp rates the interaction as moderate. Atropine and Pralidoxime chloride can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. These drugs are used together in organophosphate poisoning. When pralidoxime is given late or atropine doses are large, signs of atropinization such as flushing, dry mouth, tachycardia and mydriasis may appear sooner than expected. Overshooting atropine can cause delirium and hyperthermia.
How serious is the interaction between Atropine and Pralidoxime chloride?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Titrate atropine to drying of bronchial secretions and heart rate rather than fixed dosing, and watch for signs of atropine toxicity. Give pralidoxime as early as possible.
What other medicines interact with Pralidoxime chloride?
MediHelp also lists interactions of Pralidoxime chloride with, for example, Morphine, Succinylcholine, Theophylline. The full list is on the Pralidoxime chloride page.
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